Chapter 2 - The Serpent's Embrace

Tags: [Futa/F] [Rape] [Reluctant] [Rough] [Anal] [Tail Sex] [Excessive Cum] [Non-Sexual Violence] [Long] [Double Penetration] [Breast Expansion] [Naga] [Multi-cock] [Incest]



"Defeat."

A disheartened, feminine voice boomed in Katarina's mind, a telepathic message broadcast to all members of her squadron announcing the battle's end. The sound was so loud that it immediately jerked her back to consciousness.

She awoke lying on a stone dais, surrounded on all sides by trees and torches save for one, where a set of shallow steps lead out into her team's main base. Nearby, a wrinkled, disgusting looking creature in a dishevelled, violet robe sat hawking his wares, beady eyes and a massive nose staring out from underneath his hood. She knew this place, but this wasn't where she passed out. But, where did she...? She couldn't seem to remember where she had been when the sweet embrace of sleep had claimed her.

Rubbing the back of her head groggily, Katarina groaned, still in just as lousy shape as she had passed out in. Naked save for her leather boots and gloves, her gut slightly distended and her skin drenched with dragon semen. Thick locks of her hair sat in messy tangles, having grown crusty and stiff as the half-dragon's potent essence dried. She remembered the rape, and then her sister had found her, and then... Nothing.

Turning her head, her vision bleary, she stared off into the distance. There sat their Nexus, the magical font of energy from which the summoners she fought on behalf drew their power. It was a large, imposing building, hexagonal in shape, walled off on all sides by tall, sorcerer shaped statues. Crowning the structure was an enormous, purple crystal, shimmering and sparkling with all the magic contained within.

Before her very eyes, Katarina watched the crystal crack, small fractures appearing throughout it's pristine surface and growing larger with each second. They spread outwards, becoming a poorly constructed spiderweb. Raw, unrestrained magic seeped through the cracks, chips of gemstone flaking off of it, until the crystal could contain the enchanted essence no more. With an earthshattering kaboom, the nexus exploded, shards of crystal flying in every direction. The towering stone statues that were meant to protect it were blown apart from the inside, crumbling into rubble.

They had lost, and it was all her fault. All because she had been too weak to stop that damned dragon. Katarina rolled onto her knees, leaning her weight against her arms. Clenching a fist, she punched the ground hard, wincing as her knuckles cracked against the hard stone.

"There she iss, father!" Katarina recognized the hissing voice of her sister easily. Turning her head to
face her monstrous sibling, her eyes grew wide with a mixture of emotions.

There, standing next to the naga, was her father. The great General Marcus Du Couteau. The famed commander of Noxus's military had gone missing months ago, and everyone feared the worst, but now he had returned. Katarina nearly wept with glee to see the man who'd raised her alive and well. But he did not seem elated to see her.

Her vision blurred by tears, her father looked... Hazy. Indistinct. She couldn't make out his features clearly, but she knew it was him, she'd recognize that man anywhere. But where once he looked upon his daughter with pride, now there was only shame in his gaze. There were no approving glances for the woman who'd brought so much glory to Noxus in the past today, only disappointment and loathing.

"You dare show your face back here?" He scolded. "Your shameful actions have brought this defeat upon us. While your sister fought nobly alongside our forces, you were off gallivanting with that... That animal!" Cassiopeia nodded at their father's accurate retelling of events, standing by his side.

"No! Father, you don't understand! I-" Katarina tried to defend herself, but the man who first set her on the path of the assassin cut her off, his voice dripping with scathing resentment.

"Colluding with the enemy, abandoning your comrades, leaving those arrogant Demacians free to run wild and destroy our Nexus. And now look at you! Even now you sit there, wallowing in the filth of your misdeeds. Have you no pride girl, no dignity?! You have disgraced Noxus on this day!"

Katarina tried to stand, her knees shaking weakly as she climbed to her feet. Her head hanging low in humiliation, she tried to cover her exposed chest with her right arm. Her left reached down, squishing her swollen belly as she tried to hide her shame and cover her naked sex, but she couldn't hide the semen still dripping from her nethers. It trickled down her thighs and oozed from her sore, bruised behind, gushing from her holes in even thicker amounts from the pressure she put on her stomach. Her father gave her a revolted look, and the serpent next to him grinned with a confident air of superiority. Katarina lifted her head quickly, wild eyed and panicking. She opened her mouth to speak, to say something, anything to defend herself, but instead of words, all that came from her ruby lips was more of the half-dragon's seed. She coughed and gagged, spitting up even more cum.

"Disgusting." General Du Couteau wrinkled his nose at his own daughter and turned away from her.

"Perhaps you should have been the one cursed instead of me." Cassiopeia giggled in that flighty, girlish tone she had once used to beguile men of their secrets.

Katarina glared daggers at her sister, but before she could try to speak again, something miraculous happened. Before her very eyes, the naga began to change. Her accursed sibling's scales melted away, the green hue giving way to her beautifully bronzed skin. Her razor sharp claws shrunk and vanished, becoming the exquisitely manicured nails they once were. The thick leather headdress that crowned her skull melted away, separating into thin strands, becoming the luxuriously silky red hair that she shared with her sister again. Most wonderful of all, that hideously snake's tail split into two. From each pointed tail tip grew a human foot, and the segmented bones fused together, reshaping themselves into a perfectly ordinary pair of shapely human legs. Finally, the eery glow that had possessed her sapphire eyes ceased at last. Her sister was cured of her curse! Once more, Cassiopeia was human again, looking no different than she had that day she'd been punished for her transgressions so long ago.

Despite the rivalry they occasionally shared as siblings, Katarina's lips curled into a smile. She wanted to cheer for Cassie and congratulate her for being freed of her hideous transformation. Her elation was short-lived however, as sudden agony wracked her body, forcing her to double over in pain. Katarina howled, it felt like her body was being twisted out of shape. It was as though her legs were breaking a thousand times each, all in different places, and the bones were shifting about underneath her flesh. She felt more than she heard, a sickening crack and crunch. Staring down in horror at her hands, she watched as her fingers elongated, her nails stretching and sharpening into talons so sharp that they put her favoured daggers to shame. The bladed claws bursting from the fingertips of her gloves with the sound of fabric tearing.

Turning towards the shopkeeper, who was either blissfully ignorant or callously uncaring of all that transpired around him, she sprinted towards him. He carried all manner of magical trinkets and rejuvenating concoctions, perhaps he'd have some knowledge of what was transpiring. She made it all of three steps towards him before she fell forwards, stumbling and falling onto her side. She tried to climb back to her feet, but they refused to separate. Had someone tied her bootlaces together? Katarina hissed sharply and looked down, only to moan in horror. Her boots had fallen off entirely, nothing keeping them on as her feet had shrunk and withered away to nothingness while her legs fused together into one new, flexible limb. Her delicate, smooth skin rippled, turning green. She ran one hand down the length of her thigh, the skin growing rough as goosebumps rose up on her skin, and then spread outwards, growing thicker and widening into scales.

Katarina screamed and thrashed about on the stone, flopping about like a fish out of water, or a worm freshly torn from the dirt. With an anguished cry, she rolled onto her stomach and dug her new claws into cracks lining the stone plateau she was laying on. Scrabbling at the hard rock, she dragged herself towards the store on her belly. Where no cracks were available to grip, she made some, digging her sharp fingers into the ground and clawing her way forward. Her head grew heavier as she crawled forward, her already crusty hair growing even stiffer.

At last, she reached the oaken counter that served as the shop's main desk. Reaching up high with shaky hands, Katarina grabbed hold of the edge of it and pulled herself up. The shopkeep, hideous by even the most generous standards, recoiled away from her in revulsion. Kat ignored him and reached over the counter. She rustled through a pile of assorted magical artifacts, looking for anything reflective. Lifting up a large, enchanted sword, the blade polished to a mirror's sheen, she gazed into the flat of it and let out a terrified shriek.

Staring her back in the reflective surface was a twisted creature, half human and half snake. Her semen encrusted hair had become tough as leathery, her legs were gone, replaced with a serpent's tail, and before her gaze, her shining, emerald eyes began to glow with an unnatural light. Katarina wailed in horror and despair.

"My my, we really are quite the pair now, aren't we? Two inhuman monsters, we were made for one another..." A chill ran down Katarina's spine. That voice, that raspy, growling voice. She felt another pair of claws, smaller than her own, stroking her sides reassuringly, and a forked tongue licked the side of her cheek. She turned her head to look at her father and her sister, to plead for their aid, but they had abandoned her. Their back to the serpentine monster Katarina had become, both of them vanished into the haze created by her tears.

"I wonder, if I fuck you long enough, you'll surely get pregnant eventually. Think you'd give birth live
still, or lay a clutch of eggs now?" Shyvana hissed softly. The newly formed naga could feel that familiar, ugly shaft grinding against her scaly backside. With Shyvana's deranged laughter ringing in her ears, Katarina screamed from the depths of her soul.

***********************************************

Enveloped in an icy chill and sudden wetness, Katarina was startled awake once again. Her eyes snapping open wide, they stung painfully, her vision nothing but darkness with a slight, blue-ish tint. She opened her mouth to breathe, only to feel her lungs burn as she inhaled the chilly liquid all around her. Desperate to suck in air before she drowned, the girl threw her head up, breaking the water's surface with a loud splash.

Coughing and hacking, Katarina choked and spat up mouthfuls of water, gasping for fresh oxygen once her airways were cleared. Squinting and rubbing at her eyes, she gagged a bit more and looked around.

She was in a pool of some kind... No, the water was flowing freely. A river. On one side of it, trees. On the other, the same thing. All around her were tall-standing reeds and high grasses sprouting from the river basin. Further downstream, she could see where the river broke free of the tree line and out onto a road. Rubbing at her eyes again to try and clear them, she panicked suddenly, afraid she might skewer them with her sharp claws. Pulling her hands away hastily, she glanced at them and found, to her amazement, the claws were gone! Her gloves still covered her hands, showing no sign of the damage the claws' growth had caused. Looking down into the water, she waited with baited breath for the surface to calm from her explosive emergence. When at last the ripples ceased and she could clearly see her reflection, she exhaled a deep sigh of relief. Her eyes were their normal green, bright, but not unnaturally so, and her hair was still sticky with cum, but normal. It had all been just a dream. Nothing more than a horrible nightmare.

"Ah, awake at last. I was hoping that might wake you up." Katarina recognized that husky voice. As the water calmed a bit more, the reflection of her sister appeared in it's still choppy surface, looming above her own. She too was back to the way she was before, unfortunately. Still a fork-tongued snake. "Either that or drown you, whatever it took to put an end to your screaming. You sounded like a banshee, it was grating on my nerves."

Katarina half-sighed, half-giggled. She must've been yelling in her sleep during that horrible dream. But it was over now. Now she had to contend with a different nightmare. She dug her fingers into the wet mud of the shallow riverbed, gritting her teeth as the memories of the day washed over her like the river water. The foolish fight she picked with Shyvana, her failed escape attempt, the marathon rape, and then... Her sister's 'rescue'. Spinning around to meet her sister's gaze, water sloshing about, she stared long and hard at the snake, looking for some sign of what she had felt before screaming herself unconscious.

Cassiopeia just gazed back at her quizzically. Had she imagined it? That thick, stabbing pole, she was so certain she had felt it, but staring at the naga now, there was no sign of any maleness, or any sex at all for that matter. Katarina let out another sigh. Had she imagined it? The beginning of her feverish dream perhaps? It must have been, for the flirtiness her sister had shown before was gone now.

Cassiopeia gave her more athletic sibling a disgusted look and turned her head away, her tanned cheeks turning a bit red. "You should clean yourssself up Kat. We can't have anyone ssseeing you like that." Whenever she became flustered or stressed out, Cassie's couldn't seem to stop herself from hissing like a snake, her tongue flitting out and tasting the air when she spoke.

Katarina blushed herself and turned back to the water, not wanting to see the look of revulsion in her sister's face. Gazing into it's uneven, mirror surface, she could see just how bad the damage really was. The cum that stained her skin had long since dried and become flaky and hard. The quick dunk in the water had moistened some of it though, and now the dragon's seed was dripping from her in watery globs. What tiny amount of mascara she'd been wearing had started to run down her cheeks in black, inky lines. Her hair was matted and sticky, all tangled and hard, and nasty white splotches pockmarked her body.

The assassin felt weak from exhaustion and dehydration. Smacking her lips together, her tongue felt dry and tasted like ash. Quickly, she peeled off her filthy gloves and tossed them aside. Using her bare hands to brush some of the grass out of her way, she cupped the water in her palms and brought it to her semen-caked lips, gulping it down noisily. The dirty river water hardly compared to the fine wines and fresh juices she enjoyed back in Noxus, but in her current state it might as well have been the sweetest thing she'd ever tasted.

Scooping up more and more, she drank from the river until she felt sick, her body desperately in need of liquid to replenish what was lost during her exhausting ordeal. When at last she felt satisfied, she sat back with a gasp. Wiping off her mouth with the back of her arm, Katarina could feel her bloated stomach gurgling, the mixture of all that water and entirely-too-much cum sloshing about in her belly. She wanted to retch, her body wanting to purge itself of the half-dragon's intruding essence, but she fought it back, swallowing the bile back down when she felt it rising in the back of her throat.

Wiping some of the moistened spooge from her arms, Katarina caught a glimpse of her sister's reflection in the water again. For a brief moment, she swore she saw the naga admiring her body, but when she turned to face her sibling again, the look was gone, just another figment of her worn out mind. The naga had her arms crossed, rolling her glowing eyes at the slow pace Katarina was moving at. The rushing water swept over her coiled tail, that long, scaly appendage keeping her sturdy even while she sat in the slick mud at the bottom of the river. The only movement coming from it was the very tip of the tail, flicking back and forth impatiently.

Katarina turned away again and pondered her predicament. If they were in the river, that meant Cassiopeia had taken her back into neutral territory. A dangerous enough place to be on a regular occasion. The naga hadn't bothered to gather together any of her weapons, so to make matters worse, now she was unarmed. Just like her sister to prioritize a bath over safety, and there was no other source of water nearby for miles.

Taking better stock of her surroundings, their current position seemed decent at least. The tall reeds were clumped together tightly on all sides, obscuring vision nicely. On top of that, the grass was tall enough that if she held her breath, she could lay low and go unnoticed by all but the most attentive observer. It was a passable hiding place until they determined where to go next, and if nothing else it allowed Katarina to hide her birthday suit.

She arched an eyebrow, looking pensive. Maybe the fact that she was completely naked might work to her advantage, Katarina thought. If no one was expecting it, it might just confuse her enemies long enough for her to make her escape should any of them stumble upon her. If she could make it back to base, she could acquire other weapons, especially with the bounty she claimed from that...

Katarina grabbed two fistfuls of her own clumped, matted hair and pulled furiously. The dragon's head! She'd left it behind! Now she was completely broke too. Things were just going from bad to worse.

Katarina was distracted from her self-pity by the feel of a pair of warm hands clasping her shoulders, sharp talons gently grazing her skin. "Ssissster, you sseem a bit dissstracted. Would you prefer if I lent you a hand?" Cassiopeia's forked tongued flicked outwards each time she hissed, grazing the outer edge of Katarina's ear. The winced and shrugged off her sister's grip. It was unintentional, she was sure, but the feel of it vibrating against her earlobe was so much like Shyvana's that it unnerved her deeply.

"We're not kids anymore Cassie." Katarina chuckled nervously and shook her head. "I'm perfectly capable of bathing on my own." The naga was right to hurry her though, they couldn't afford to spend much time here, Kat thought to herself. It was a shame too. After her terrible experience, the cool water flowing over her skin felt so relaxing, rinsing off the remains of the dragon's 'affections'.

Even though she knew she should be rushing, Katarina found herself bathing at a slow, leisurely pace. She savoured the cleansing feel of the flowing stream and the occasional tickling from the reeds swaying in the breeze. Wigglng her toes in the riverbed muck playfully, Katarina kicked up some of the wet sand and muddied the water. So much so that the murky river no longer gave her a clear reflection. So it was that she didn't notice the serpent approaching her again, nor the lustful gaze with which the naga was eyeing her human sister.

Again, Katarina felt her sister's hands upon her, but this time the snake-woman didn't ask for her sibling's permission. Sliding her arms around Kat's waist from behind, Cassiopeia's wet claws began kneading her smooth, rounded belly, massaging it tenderly and wetting some of the dragon's dry cum so she could wipe it off. "Kat, you're taking too long..."

Katarina cringed and squirmed, trying to free herself again. After everything she'd been through, her sister's embrace seemed a bit too... Amorous. Placing her hands overtop of Cassiopeia's, she tried to pry her grip loose, but the naga refused to release her. "I'm fine Cass, let me go." There was a twinge of nervousness in the girl's voice, but the snake just tightened her grip, her long, serpentine tail weaving in between her legs and entangling them in her strong coils.

"I insist. It'll go much faster this way." Cassiopeia hissed into her sister's ear, her hands firmly massaging her human sibling's swollen belly, grinning to herself as it sloshed and churned with all the liquid she'd consumed. Her scaly tail was gently stroking along Katarina's thighs, the smooth scales rubbing against her bare skin. Leaning forward into the assassin's back, Cassiopeia ground her chest into the red-head's spine, letting her hands roam over her sister's body. In the wake of her palms, Katarina's lightly tanned skin glistened and shone, the thick clumps of dried cum that stained her flesh smearing off and mixing into the river, giving it a milky, off-white tint. Scooping up more water, Cassie lifted it over her sister's head and dumped it into her hair, her sharp claws working to comb through the tangled mess. She cringed in disgust as a gooey string of cum came off between her fingers, clinging to her long, delicate looking digits before she flung it away to get caught on some of the reeds. "Just try to imagine that we're kids again, and maybe this won't be so bad."

Trying to ignore the suggestive way that the serpent was rubbing against her, Katarina grit her teeth and ran her fingertips across the strong, muscular tail that was becoming entwined with her legs. She tried to pry it off of her limbs, only for Cassie to strangle her thighs even harder. "Easier said than done, you weren't a monster back then." Katarina gasped and clamped a hand over her mouth, knowing that was exactly the wrong thing to say to the short-tempered serpent.

Cassiopeia's fumed, a low growl rumbling in her throat. She forced back the growl building in her throat and faked a playful grin. Her hands having made their way to Katarina's back, she fought the urge to dig her claws into her dear sister's spine, reaching around her again. By now her sibling was mostly cleaned of Shyvana's seed, all that remained was the best part. "I ssuppose that'ss true," she hissed. "But then, you didn't have thessse back then either!"

Katarina's eyes bulged and she cried out in surprise, the serpent grabbing a handful of her bountiful mammaries in each paw and giving them a rough squeeze. Kneading them roughly, Cassiopeia rolled the girl's tender chest like dough, pressing her palms against them harshly and squashing her sister's large, perky breasts. Letting out a deep sigh, the naga arched her back, grinding her own barely covered bosom into Kat's back, savouring the red-head's soft, pliant chest pillows.

"Aaagh! Cassie, what the hell?!" Katarina was gritting her teeth, trying to bite back a scream. After all the abuse she'd taken from Shyvana, her chest was sore and tender, and the snake's claws were hardly being gentle now.

"How unfair..." Cassiopeia pouted, leaning her head forward to rest on Katarina's shoulder. Her glowing eyes dimmed slightly as she glanced down into the water. The mud had since settle back to the bottom, once again revealing their reflections in the choppy water. Where once they had looked so much alike, the naga's transformation had since made them look so disparate. "I was supposed to be the pretty one. How is it that the athletic one between us was the one gifted with a bigger set of titsss?"

Katarina grimaced, twisting her head to the side and screwing her eyes shut, not wanting to see the reflection of her sister's face. The look in her eyes was... Disturbing to say the least. A melancholy mix of sadness, lust, jealousy, and deranged fury. Katarina had heard from secondhand sources that her sister hadn't exactly been right in the head since the curse had taken hold, but this was the first time she'd seen for herself. She'd always always been a bit quick to anger, but since the transformation her temper had only grown worse. There were numerous rumours floating about how Cassiopeia had torn her servants to shreds with her bare claws when she'd first gone through the reptilian change. Now the rage in her eerily glowing eyes was directed at Katarina, and it made the girl tremble in fear.

Cassieopeia kept up her relentlessly 'massage', mauling Katarina's bust. She squeezed until Kat's ample flesh bulged outwards from between her fingers, giggling like a little girl who'd found a new toy to play with, even as Katarina screamed in pain, feeling like those razor-bladed nails would break her skin and slice her chest to ribbons any second now. Pulling her sister in closer, Cassie pressed their cheeks together, nuzzling the poor girl affectionately while rolling her bosom in her paws.

"No one will touch me anymore Kat," Cassie exhaled a sigh, easing up her grip on her bust. "Everyone is too afraid or disgusted. But you would never abandon me, would you?" Cass leaned further against the side of Kat's face, cheeks rubbing against one another.

The loving 'affection' of her sister repulsed Kat, twisting her head away from the serpent's attempt to cuddle. Things had gone way past simply bathing together. "C-Cassie! You-you need to stop! This... This isn't appropriate!" Katarina pleaded, her voice stuttering anxiously, hoping her sister would come to her senses.

She did not. Hissing softly, she pressed her lips to Katarina's exposed neck, pursing her lips and gently sucking on her tanned flesh. Up and down the length of her neck, she peppered her skin with kisses and sharp little nips, tormenting her sister with sharp little lovebites. Releasing her torturous grasp on her sister's udders, Katarina dared to hope the naga was done abusing her, but the kisses continued. She whined quietly, still trying to pull away, but the snake's tail binding her legs insured she was going nowhere.

There was the slight jingling of rattling jewellery, then the feel of Cassie pressing against her back was gone. A plink not too far away caught her attention, like something being dropped in the water, then Katarina was shoved forward as the naga threw her weight against her back again. Kat's eyes widened, the hard, jewel encrusted brassiere no longer jabbing her spine. Instead, there were just her sister's soft breasts cushioning her back.

"Any less appropriate than engaging in a tryst with the enemy on a battlefield?" Cassiopeia said with a coy smile on her face.

"No. No! Cassie, stop this!" There was no illusion anymore, no misunderstanding. She couldn't let this happen again, not with her own sister of all people! "Get the hell away from me!" Her dread giving her strength, Katarina swung her arms wildly, managing to hit the naga in the side of the face. Stunned by the sudden blow, Cassie's tail loosened it's grip, and Katarina quickly managed to pry her legs free. Thrashing in the water, she broke free and managed to hop to her feet, making a break for it.

The water slowed her down though, resisting her movements and making her sluggish, even more so than she already was. A snake was much more aquadynamic than any human though. Coiling up, Cassiopeia lunged forwards, grabbing at her sister's ankles and yanking her feet out from under her, dropping her back into the water face first. Slithering over top of her, Cassie grabbed a fistful of scarlet
hair and held her under the water, until she could see the naked wench squirming and struggling for air. Only then did she pull her head out of the water to let her gasp for oxygen.

"Even my own sssisster shiess away from my touch!" Cassiopeia snarled, tangling Katarina's hair around her claws. Pulling hard on those knotted crimson locks, she forced Kat to look up so that the naga could see the fear in her bright green eyes.

They just glared at one another, seconds feeling like minutes as the serpent jerked on Katarina's crimson tresses, the girl biting her tongue to avoid giving her the satisfaction of hearing her scream. Slowly, Cassie's tail slithered through the choppy water. The strong, muscular limb curled and wrapped around Katarina's thighs, locking them in place and then coiling around the rest of her body. She could feel it squeezing around her protruding gut, the pressure making her stomach gurgle.

It was getting harder to breathe, the red-head's eyes growing large. Her sister was squeezing her like a boa constrictor. Her breath becoming ragged wheezing gasps, she weakly tried to push the scaly appendage back, to pry it away, but it just looped around her again, trapping her arms against her chest.

"Cassie..." Katarina rasped, feeling herself growing lightheaded as the snake slowly crushed her. "Why... Are you... Doing this?"

The naga just grinned down at her, a sly, almost childish grin as she squeezed even tighter around Katarina's midsection.

The pressure continued to build on Katarina's gut, her full, squishy belly compressing tighter and tighter. Her eyes bulged, and she felt bile in the back of her throat. All that cum still filling her belly, sloshing and churning as her stomach was squashed. Moving off of her sister, Cassiopeia continued to eye her with that frighteningly giddy look. Showing just how powerful her tail was, she hoisted her bound sibling up in the air and gave her one last good, hard squeeze. Katarina exhaled the last of her breath, her jaw hanging open in a silent scream. Was this really how she was going to die? Crushed to death by her own sister? The naga's coils wound themselves tighter, twisting Kat's body, wringing her out like a sponge.

That analogy suddenly felt all too accurate. With Katarina's stomach being squished too much to contain it all, all of that gooey, syrupy semen had only one way to go. It gushed back out the way it came, spraying from her ravaged sex and oozing from her battered and bruised ass. Her cheeks burned with a humiliation she'd been previously unable to even imagine as the naga wrung her out, her coiled tail spreading out, stretching further down her torso as she forced out all of the half-dragon's remaining seed. Goopey white sludge erupting from both of her holes in thick gouts to land in the water below with a splash. It clumped together even in the river, milky white spots being carried downstream.

Biting her bottom lip, Cassiopeia strained to empty out her sister's womb and rectum without actually crushing her, careful to apply just the right amount of pressure in just the right spots. Only when the flow of draconic semen had slowed to a trickle and Katarina's face was turning blue from lack of oxygen did she finally loosen her grip. Uncoiling her serpentine tail, she dropped the nearly unconscious girl unceremoniously back into the water to cough and sputter for air. Her bulging, swollen belly was back to its normal size now, flat and athletically toned, with just the barest hint of stretch lines the only sign of what she had gone through.

"Just helping you with your bath, dear sister. You needed a good cleaning, inside and out." Cassiopeia snickered.

Katarina was laying face down in the water, weakly holding her head up to take short, shallow breaths. Most of her body was numb, and it was a miracle she didn't have any broken bones.

Again, Cassie's hands were upon her now, gently caressing her sister's muscular thighs. Taking a firm hold of her legs, she dragged her sibling closer and threw Kat's legs over her shoulders. The human had to prop herself up on her arms to keep her head out of the water at this angle.

"Ungh... Cassie... Now what?" Katarina groaned and tried to twist her body, hoping to see what her sister was doing, but the naga just swatted her with her tail.

"Be quiet Kat, I'm not done yet." Her face hidden between Kat's thighs, Cassie licked her lips and let her forked tongue glide across her sister's labia. The loud moan that followed was music to her ears. The twin prongs of her tongue lapped at her sister's tender netherlips, teasing all around her sore, puffy lips with tiny, delicate licks.

Katarina gasped and her arms wavered, nearly dropping her face into the icy river. After being brutalized so roughly by the half-dragon, even the gentle, caring tongue of her sister was like pins and needles pricking her raw sex. She cringed and bit her bottom lip, fighting with herself. She had to stop this. This wasn't just sex with another monster, this was incest! But it felt so soothing.

Cassiopeia had none of the same inhibitions as her sister. She'd never exactly been a chaste girl. In her time serving as a courtesan to nobles, she'd partaken in far more vulgar things than a bit of sisterly love, with both men and women alike. She'd been one of the greatest assets to Noxus's intelligence services without ever needing to use force or violence. The pleasures of the flesh, a night of ecstasy, those had been the only weapons she'd needed at her disposal. It had been such a huge part of her life that, now that it was gone, she found herself burning with lust and desire all the time. Or perhaps her enhanced libido was simply another part of her curse. Either way, the naga found she could never satisfy herself and 'relations' with non-humans was frowned upon. Not that it couldn't be found in a city state as seedy as Noxus, but Cassiopeia was far too high-profile for anyone to risk getting caught with her. As a result, she was alone and aroused constantly.

But now, now she had finally found someone to sate her burning desires. If her sister had no qualms with fucking a dirty half-breed, then surely she wouldn't mind lending the naga a hand in her time of need. Sure, she might protest now, but everyone gave in sooner or later, once they felt the joys Cassiopeia could bring them. There wasn't a man or woman alive who had been able to resist her expert tongue yet. Sure it may be reptilian now, but she could still do things with it that would make most people writhe. And judging from the condition she found the assassin in, she was certain that Katarina would be overjoyed by the surprise Cassiopeia had in store for her as well.

Her thin tongue smacking wetly against her sister's tender flowerpetals, Cassie drug the slick organ up and down, lapping up the last trickles of Shyvanna's seed as it oozed from her pussy. Even though she tried to suppress it, she could hear Katarina's whine reverberating in her throat as she cleaned out her sex. The water got a bit muddier as Kat balled her hands into fists, her fingers digging through the dirt. When it felt like the red-head could take no more, she pressed the fork of her tongue against the sensitive little love button, letting her clit slide between the two prongs, and hissed. Her tongue buzzed and vibrated against Katarina's clitoris, making her scream as her body was wracked by a sudden, spastic orgasm.

The naga didn't stop with just one though. The hot, burning sensation of the dragon's cum quickly being replaced by the sweeter taste of her sister, Cassiopeia felt encouraged. Lunging forward, she pressed their lips together in a lewd kiss, her large fangs scraping against Kat's outer labia as the snake dug her tongue deeper into her honeypot, slurping and drooling over her sister's lovetunnel.

Katarina swore she was seeing stars dancing in front of her vision, though really it was just the reeds blowing in the wind. The pleasure was so much more intense than what little she had managed to receive from the half-dragon's greedy fuck, made even greater by how overly sensitive her sore cunny was. Somehow, she knew her sore sex should sting at least a bit more, and she wondered if her sister was just that skilled, or if she should be concerned that she was starting to have difficulty differentiating between pleasure and pain.

Still, as wonderful as this felt after the last few agonizing hours, she couldn't let it continue. This was
still a battlefield, they were still in hostile territory, and this was still her sister eating her out.

"Cassie... Cassie! Stop. You have to... You have to staaaahh!" Katarina vision grew hazy as her sister's tongue probed deeeep inside of her, the forked end of it reaching further than any human ever could. It found her weakspot, and with another hiss, began vibrating right up against her g-spot. She screamed, her hips bucking of their own accord, grinding against Cassie's lips as the serpent's tongue twisted and thrust inside of her.

Each time the naga's tongue pulled back, it scooped out some of Katarina's gushing juices, only to go back for more as she tormented her sister. She pushed her sibling to the very brink and then, when Kat was writhing on the edge of another orgasm, she stopped and pulled her tongue out. Panting softly, Kat's heavy breasts swung back and forth as she shifted her body. That mind-numbing bliss had suddenly vanished and her body craved more, but the naga refused to give her any. “You wanted me to stop, didn't you?” She said with a pleased expression on her face. She met her older sister's gaze, letting her claws stroke up and down her thighs.

Katarina bit her bottom lip, torn by what she suddenly found herself craving, and what she knew was a step further into debauchery. She whimpered pathetically, her mind so fogged with lust that she had trouble finding the words. They didn't seem to be in any immediate danger, maybe she could afford a bit of relaxation...

Gazing into her younger sibling's eerie eyes, they seemed to almost possess a mesmerizing quality to them, like staring into a pair of sparkling sapphires. “Maybe... Just a bit more...” Katarina shook her head. What was she saying!? She couldn't let this keep going! “No, we can't, we have to get somewhere sa-ahh! Cassie!”

The naga heard more, and that was the only word she cared about. Her claws each grabbing a handful of Katarina's ass for leverage, she leaned in to give the girl another teasing lick, flicking her tongue across her clit. Even after giving her big sister's slit a good tongue bath though, she was still tasting that dragon's disgusting seed on her lips. This was no good, she had to get rid of it all.

Prying her sister's cheeks apart on a whim, she rolled her eyes as she saw the barest trickle of dragon cum still dribbling from her little ring of muscle. Big sis was such a slut. Giving Kat's slit one more good lick, Cassiopeia dragged her forked tongue up the length of her labia and kept going, leaving a trail of saliva in her wake as she lapped up the last of the halfling's essence. The forked prongs teasing the girl's taint, moving further up until she was tickling Katarina's pucker.

The assassin clawed at the mud, trying to drag herself away. This was getting more and more uncomfortable by the moment. Cassiopeia held firm though as she set about rimming her squirming sister, swirling her tongue around the girl's backdoor in small, fast circles. Kat's legs were starting to kick and thrash, her thighs clamping around the naga's head. Grabbing hold of her left thigh to hold her steady, Cassie let her right hand slide underneath the struggling girl, stroking her taut belly with her palm and stretching out her thumb to gently rub Katarina's sensitive little lovebutton.

A smile spread across the serpent's features when that calmed her sibling down almost instantly. All she had to do was show her big sis how good she could make her feel, and the girl would become putty in her hands.

Pressing her tongue a bit more forcefully against Kat's anal ring, she tried to push it inside, but the trained killer just grit her teeth and clenched her muscles, trying to keep her sister's probing tongue out. That just would not do. Trapping the red-head's clit between her thumb and forefinger, Cassie ramped up the stimulation to her sister's delicate nub, rolling it between her fingers and pinching it lightly.

Katarina let out a high-pitched moan, her muscles relaxing long enough for her little sister to bury her tongue into her anus. Her scarlet tresses were falling over her face like a curtain, the ends trailing through the water. She'd never felt anything quite like the snake's slippery tongue probing her back entrance. The strange feeling of the slender, wet organ twisting and slithering around inside of her rectum was so weird, though not entirely unpleasant. Her sister's saliva washed away the burning dragon cum, leaving her feeling much cleaner, albeit even more repulsed by the naga.

“Cassie! Th-that's disgusting!”

Cassiopeia's tongue made a lewd, slick slurping sound as it slipped back into her mouth again, a string of drool still tethering the forked end of it to Katarina's ass crack. “Oh, don't pretend you're not enjoying it.” The naga cooed, deftly slipping her index finger into her sister's pussy. “You're still soaking wet.”

Katarina looked down into her reflection in the choppy water. Seeing the bright red blush on her own face, she lifted her head, not wanting to see her own humiliation staring back at her. One of Cassiopeia's long claws replaced her tongue, sliding up and down the crack of her ass, the tip of it pressing firmly against her opening and sliding in easily thanks to all the saliva lubing up her back passage. The perverted sound it made as it drilled into her asshole made Katarina cringe and Cassie grin. A lewd schlick to match the squishing sound Kat's sex was making. Sliding an extra finger into her big sister's pussy, Katarina's moans built in volume and pitch as the serpent was edging her towards orgasm again. Leaning more of the girl's weight against her arms, the naga licked her lips as she fingered both holes at once, never letting her thumb stray too far from her clitoris.

And then, once again, just as Kat's moans reached a crescendo, the naga stopped, pulling her fingers free and leaving her just shy of her peak.

“Why? Why do you keep stopping?” Katarina whined, her voice sounding tiny and defeated.

Cassiopeia clucked at her sister, shaking her head shamefully. “Tssk, tssk. What a selfish slut you are.” Grasping her sister by the thighs, Cassie lifted her off her shoulders and dropped her abruptly into the cold water, chuckling softly as she picked herself up out of the river, shivering from the cold and her interrupted orgasm. “Expecting me to do everything for you without doing anything in return for me. Naughty girl.” The serpent slithered a bit closer, lifting herself up on her tail a bit higher so that she towered over her older sibling. “If you want any more, then I think it's only fair that you returned the favour.”

Cassiopeia's hands swept down her sides, past where her bronzed skin turned to bumpy, reptilian scales. Her gaze following her sister's sharp paws as they moved lower, Katarina's eyes were drawn to a small slit, barely noticeable amidst the lighter green scales lining her belly. It took the naive girl a moment to realize both what she was seeing, and then again for it to dawn on her what Cassie wanted. No wonder she was never able to spot any sign of the naga's sex even though she wasn't wearing any clothes. It was on the underside of her tail, always pressed against the ground and unseen as she slithered about.

Katarina scowled, pushing herself up onto her knees and glaring into her sister's face. “You don't really expect me to...”

Cassiopeia leaned forward, her human torso hovering over her as she reached down to tenderly stroke her sister's hair. To Katarina, the gesture felt more like a threat than reassurance however. Those long, knife-like fingernails grazed past her ear while the naga spoke. “I exsspect you to show more loving devotion to your own flesh and blood than you would to an opponent.”

“It's not like I was given a choice Cassie!” Katarina barked back at her, her eyes narrowing to slits as she fumed with rage, clenching one hand into a fist.

“Then maybe I shouldn't give you one either.” Pressing her hand to the back of her head, Katarina pushed back instinctively, but Cassiopeia's cursed fill her with unnatural strength, and she easily overpowered her ordinary sibling, shoving her face forward into her smooth, scaly underbelly. Katarina struggled as the snake expected her to, beating on the snake's leathery hide with her fist, but her tough scales provided ample protection, especially considering Kat's weakened state.

Grabbing the back of Kat's head with both sets of claws to hold her in place, Cassie hissed and pressed her face right up against her hidden slit, grinding her vent against her sister's nose and lips. Katarina's neck muscles strained, fighting to pull back, but the snake wouldn't let her. The rest of her lengthy tail was wrapping around her waist, coiling around her and starting to squeeze again. Not as hard as before, but enough to make the message clear. Katarina would return the naga's affections, or Cassiopeia would crush her internal organs into paste.

With tears welling up in her eyes, the fiery-haired assassin resigned herself to her fate. What use was there in fighting it? She had no weapons to defend herself, nor did she have the strength or speed to match her reptilian sibling. She could already feel Cassiopeia's fluids coating her ruby lips, the naga having grown eager while tormenting her elder sister. Closing her eyes to try and imagine she was anywhere else, with anyone else, she let her tongue slip out to taste the inhuman woman's damp sex.

It was hardly the worst thing she'd tasted that day. Nowhere near the ash and brimstone taste of Shyvana's seed, but it was still bitter and disgusting. Katarina gave her slit a few tentative, hesitant licks, earning herself a cuff to the back of the head from the naga.

"Don't think you can get away with that shy, hessitant girl act with me, sssisster!" Cassiopeia's eyes narrowed. "I found you sssoaked in enough cum to drown a yordle, I know you can put forth more effort than that!"

Kat's eyes were filled with fury. What she wouldn't give for one of her daggers. Who cares if they were family? She was so furious she'd have happily skinned the naga alive for a new set of clothes. And that half-dragon, this was all her fault! These two reptilian fiends deserved one another.

Her vision still filled with hate and rage, Katarina pressed her hands to the serpent's underbelly, her fingers parting her folds to thrust her tongue deeper. Wincing from the taste, she did her best to imitate the motions the naga had used to make her feel so gooood. Swirling her tongue in large, languid circles, she tried to make it vibrate like her sister did, but all she accomplished was slapping her tongue back and forth.

Her sister's eager, but inexperienced actions made Cassiopeia laugh. Not everyone could have a tongue as experienced, or reptilian, as hers though. Still, lousy as the girl may have been, it still beat having to use her claws. It was so difficult to finger oneself with a set of knives, she was so focused on not skewering herself that there was no pleasure to be felt.

The naga bucked and shifted her body, grinding her scaly underside against Kat's lips, trying to find an angle that might help the poor girl do a better job. The emerald scales coating her belly glistened, water droplets rolling down her body mixed with saliva and her own arousal. Her lust was building and it wouldn't be long now until Katarina got to see Cassie's 'little' surprise.

The snake's loins were burning, her tail splashing as it wiggled back and forth. Katarina exhaled a warm sigh through her nose, mistaking her sister's squirming as a sign of impending orgasm, a mark of her good work. Redoubling her efforts, she just wanted this ordeal to end. Her fingers sensually massaging the naga's sides, she jabbed her tongue in, and licking her sister's bumpy, internal walls, stopping when she reached something slimy and hard.

She nearly recoiled in confusion. There's no way her tongue was reaching deep enough to hit the back of her sister's passage, and she wasn't nearly naive enough to believe that could be her hymen. Whatever it was, it was pushing back against her tongue, slipping out from her slit.

Confused and disgusted, Katarina struggled to pull back, and to her surprise, the naga let her. Afterall, Cassiopeia wanted to see the look on Kat's face.

Slowly emerging from Cassiopeia's vent was a long, spongy slab of flesh. Completely smooth and pink, from the base to the thin, tapered tip of it. The only mark was the occasional blue vein lining it's surface. It pushed its way out from what Kat had thought was her sex, but was more the reptilian equivalent of a sheath. It flopped forward as it pushed out, only semi-hard, but it was quickly filling out with blood, swelling larger and thicker.

Staring first in shock, then horror, Katarina's last memory before she passed out returned to her, that of her sister prodding her with a thick, needy cock. But it couldn't be! That was just a part of her nightmare, or so she had thought. She was quickly finding that reality was much worse than any dream however.

"Cassie... But- What?! How?! I don't..." Katarina was at a complete loss for words, watching the naga's sharp fingers graze across her smooth shaft, grabbing hold and lightly stroking herself.

Cassiopeia sighed, a dejected look on her face. "This curse... Wasn't bad enough that it turned me into a monster, but it took my womanhood too!" The serpent grinned coyly, gently stroking her sister's hair and trying to guide the woman's lips to her waiting prick. "It's not all bad though. You'd be amazed at just how good it feels to be the one sticking it to some filthy slut for a change... Someone like you." Cassie giggled, her sister desperately fighting the hold on her head.

Katarina tried to look away, fought to free herself, but the rest of the naga's lengthy tail was still wrapped around her, and it gave her another harsh squeeze to remind her who was in charge. Just as the slimy tip of Cassie's girlcock was about to press against Kat's tightly pursed lips, the naga angled it up higher to let it rub along the bridge of her nose, a bit of her natural lubricants dotting Kat between the eyes. This wasn't an act of mercy on her part though, she just wasn't done showing off for her big sister.

Holding the back of Katarina's head, she yanked hard on her hair whenever she tried to look away, forcing her to watch as more and more of her pole slipped from her opening. The naga's shaft would never be as big as Shyvana's. Though still larger than all the males she'd had the pleasure of enjoying in her lifetime, she had neither the enormous girth or length of the bestial half-dragon. Though she still had something that Shyvana didn't...

Cassiopeia's slit bulged, her lips stretching even wider as something else started poking out. Her gaze drawn to her sister's vent, it was like watching a tragedy in action. She didn't want to watch, but Katarina found she couldn't look away. Pink flesh pushed out from the naga's sex, briefly looking as though her slit was turning inside out. With a slick, squishy pop, another tube of pink flesh suddenly sprung outwards.

Katarina screamed anew, ignoring the naga's claws yanking on her hair as she twisted her head and thrashed uselessly in the water to try and get away.

Cassie sighed happily. Letting only one shaft free at a time had been most uncomfortable, the first one trapping the second inside as it had swollen and grown erect, but the priceless look on her sibling's face made it all worth it. She was, afterall, a snake now. So if she was going to be partially male, it only made sense for her have a pair of twin hemi-penes. As the second one swelled and grew hard, they became completely identical, both nearly nine inches long and two thick. They bobbed and weaved in the air, the pair maintaining a small bit of flexibility, even when fully hard, to make up for the difficulty in lining her reptilian hips up with another.

"Oh God, no! This can't be real! This has to be a nightmare!" No matter how much Katarina pleaded to wake up, no matter how many times she squeezed her eyes shut in hopes of seeing something different when she reopened them, nothing changed. Her sister still had her bound tightly within her coils, her prehensile members rubbing themselves against her cheeks.

But Kat's hands were still free. Grabbing hold of each of her sister's pulsating cocks, she squeezed hard, trying to crush the spongy, pink shafts between her fingers. But where she hoped to hear a squeal of pain from the naga, there was only a lustful moan. Both reptilian shafts pulsed and spat out thick globs of perfectly aimed precum, splattering either side of Katarina's face.

"Oh, Kat! If I'd known you would be ssso enthussiassstic, I'd have told you to give me a handjob firsst." Cassiopeia snickered to herself. Inside of her vent, her twin lengths were practically stewing in their own precum. It gave the two slabs of meat a strong, heady smell that made Katarina gag. More importantly though, it meant they were slimy and lubed up constantly. She could barely get a grip on them, the slippery, meaty pillars sliding between even her tightly clenched fists. Cassie bucked and thrust savouring the feel of Katarina's delicate, human fingers, her smooth skin gliding across her needy girlcocks and hugging them tightly. It felt so much better than those blades she called her fingers. But the naga knew there were far better holes to sleeve her dicks in.

Cupping her sister's face between her claws, Cassiopeia bent down to look her in the eyes, to admire those pretty pools of jade and her lightly tanned skin, perfect save for that one scar over her eye to mar her features. "Do you know just how many men have pined for you over the years sister?" Cassie guided Katarina's lips to meet the pointed tip of one of her smooth members. The question was rhetorical of course. Katarina wasn't stupid enough to answer, or else she'd have found herself with a mouthful of cock, but Cassiopeia was content to dot her lips with her bitter tasting precum for now.

"How many of them have come to me instead, thinking you unattainable. Have dressed me like you, called me by your name, even had me wear make-up to imitate that pretty little beauty mark of yours?" Gently, Cassiopeia traced the tip of her thumb along Katarina's scar, pausing over her eyes and making her sibling quiver in fear. "All they saw was the driven, focused servant of Noxus. The Silent Blade who'd cut them down for daring to see her as anything but a weapon, unattainable to their base desires. Damnit, even to the sssummonerss, I'm just the one they call for when you're not available! What would they think, I wonder, if they hade found you the way I had? If they could see you now, just how easy you really are."

Cassiopeia's words stung Katarina far worse than any of her deeds. She glared up at her sister with determination and seething fury. But determination to do what? She couldn't stop the half-dragon when she'd been fully armed, what could she do to the naga now? She could struggle, she could resist, but Cassie would have her way in the end, the serpent almost always did, and it would be more painful for her as a result. But she couldn't just accept it either! To just give in and forsake what little dignity Shyvana had left her with, she'd never be able to look at herself the same again.

"At last, I'll have what they never could," Cassie said, more to herself than anything, gloating over her victory. To the naga, this was vengeance. For all the athletic gifts her sister lorded over her, for the beauty that had been robbed of her, and for the life of jealousy she'd led in Katarina's shadow. Shifting her serpentine coils, she tightened her grasp around Katarina's midsection, squeezing until the wind was forced from her lungs, her mouth opening wide to exhale and desperate to breathe in.

The naga loosened her grip, letting her sister breathe in a whiff of her strong musk, then lunging forward to give her a taste too. Only one shaft managed to reach Katarina's tongue before she sealed her lips around it to keep the other out. Cassiopeia pouted, then shrugged. It would get its turn soon enough.

Katarina groaned. Thankfully, her sister's shaft didn't strain her jaw to the breaking point the way Shyvana's had, but it tasted much worse. And whereas the half-dragon had been 'courteous' enough to fire most of her loads straight into her stomach so she wouldn't have to taste them, her sister's length was completely coated from tip to base in her foul slime. The only hope she could muster was that her sister wouldn't have the same endurance or virility that the dragon did. She knew the naga was pent up, and she prayed the serpent would cum quickly and be done with her.

Grasping the naga's free shaft with grim determination, Katarina began stroking it firmly, her head bobbing in time with her hand. Her sudden eagerness took Cassieopeia by surprise, a shudder running down her lengthy spine. "Ohh, do you love the taste of my cock that much Kat? Mnnn..." The serpent bit her bottom lip, chewing on it lightly with one of her large fangs. As a 'reward' for her sibling's sudden change of heart, another thick glob of precum oozed from the tips of her greasy members, one landing atop Kat's tongue while the other sprayed across her bridge of her nose.

The bitter taste wasn't getting any better as time went on, but Katarina forced herself to keep going, using what little experience she'd accumulated pleasing the half-dragon to try and get her sister off faster. Preferably before she decided to lay claim to any of the assassin's other holes. Pressing her tongue along the underside of the naga's throbbing pole, she rubbed it up and down.

Making sure to keep her hand busy as well, she let her thumb tease and stroke the tip of her sibling's other prick in between long strokes. All the preseminal fluid coating it let her hand fly up and down the shaft. Whenever her palm reached the base, she would give it a firm squeeze, encouraged by the naga's lusty moans.

Risking a glance upwards to gauge her sister's reaction, Katarina would have grinned if her mouth wasn't full. The naga's back was arched, Cassie throwing her head back and basking in the pleasure she was being showered in. She made sure to keep one hand on the back of Katarina's head just in case, lovingly stroking her sister's hair, while the other was pawing at her own chest, delicately massaging her breasts with practiced skill.

Slurping noisily on the serpent's prick, Katarina hollowed out her cheeks and sucked on it hard. Pulling back until even the tip slipped out with a lewd pop, she quickly shifted her attention to the other shaft. Gooey strings of drool and precum were still tethering her lips to the first one as she started blowing the other, her hands switching to the first so it wasn't left out. She didn't want either of these disgusting things going near her sex, and if this was the only way to save herself, she'd swallow all the nasty cum her sister had to give.

"Aahn! Kat! Keep... Keep at it! That feelsss ssso goood." Cassiopeia's hissing was becoming longer and more drawn out as her pleasure grew. Her serpentine hips writhed and spasmed, her coiled tail growing gentler, practically hugging the bound girl and grinding her smooth scales against her wet skin. "My sssisssterr, the exsspert cocksssuckerrr."

Cassie giggled, her sharp fingers running through Katarina's fiery tresses. Forcing a little bit of her cock further down the girl's throat, she let loose another little surprise for her. The very end of her tail, where the scaly limb thinned out, wound its way in between Katarina's legs, tickling her outer lips while the naga smiled. Kat squealed in surprise, the sound reverberating through the snake's sensitive organ. Slowly, she began easing the tip of her tail into her sister's snatch. Her hips became more active at the same time, thrusting and forcing Kat to swallow more of the naga's cock.

"There'ss no reasson why we can't both enjoy thisss, no?" Cassiopeia said softly, again letting her thumb trace the outline of Katarina's scar, rubbing her precum all along the length of it.

Kat cringed, trying to ignore the pleasure Cassie was forcing onto her. Damn her tail! It moved like her tongue, only bigger in every way. And those scales... While they were smooth for the most part, they still made noticeable little bumps that the girl could feel grinding against the inner walls of her sex. It slid inside of her so smoothly, so easily, stretching her just enough without going too far.

Katarina's eyes rolled up into her skull, Cassie's tailtip finding just the right spot to make her swoon, and the naga knew it. She held her tail there, letting the tip wiggle against her weak spot, rubbing her little scales against it. Overwhelmed by pleasure, the foul taste in her mouth suddenly seemed irrelevant. Moaning far too loudly, Katarina slowed her movements, letting her sister savour the greedy, schlurping lips wrapped tightly around her girldick. She bobbed her head more slowly, and when she went to switch cocks again, she paused and gave the precum-oozing slits on each an affectionate lick.

Katarina was just giving the first one a kiss, her lips pursed against it, when her eyes rolled back and she managed to snap herself out of her delirium. What the hell was she doing?! She couldn't be getting into this... She wanted it to end. Cassie was so much more experienced than her that making Kat dance to her tune was child's play. She thought she could finish the gender-crossed serpent off quickly and make her lose interest, but at this rate, she was going to be left begging for more if she didn't stop this now.

Then, all at once, the taste of the naga's cum that her lust-fogged mind had been suppressing hit her again. Katarina's eyes bugged out, and she yanked her head off the serpent's prick. Coughing and gagging, she spat as much pre-seed into the water as she could, waiting a few seconds for the flowing river to carry it away before dunking her head under it to try and wash out the taste.

Cassiopeia gave her sister a bemused look. "Aww, what's wrong Kat? Don't you like the taste?" Her tail intertwined with her sister's legs, Cassie pulled them apart, staring at the human's little treasure box beneath the water's surface. Still holding her sibling by the hair, she dragged her closer, using the scarlet strands as a rag to wipe off some of the spit. "That's okay, I think you're ready for the main event now." To anyone else, her husky tone would've been seductive, but to her own kin now, it was terrifying.

Clamping her thighs together to try and keep Cassie from shoving her tail in any further, Kat grabbed at it with her hands, digging her nails into it to pull it out. The naga hissed in pain, backhanding her sister across the face. Her glowing eyes narrowed to slits, she kept a tight hold over Katarina's ankles, ensuring she wasn't going anywhere.

"Now why would you go and do that? We were having ssso much fun."

"Not again, not again!" Katarina shrieked deliriously, splashing about and scrabbling desperately for something, anything she could use as a weapon. Parting the reeds just a couple feet ahead, she saw a glimpse of something, a large stick, a log planted in the riverbank, she wasn't sure. But it looked just heavy enough...

She coughed and sputtered as a large weight fell upon her suddenly, pushing her down under the water's surface. All she could feel were scales surrounding her on all sides, and she had to forget about finding a tool to defend herself and just focus on breaking for air. More and more, she felt the snake's coils wrapping around her, her wet scaly underbelly brushing against her back, her stomach, all sides. The scales ground against her bare skin, and slowly she felt them twisting her body, turning her onto her back. Sunlight beamed down from above, casting everything into shadow as the water obscured her vision. Something large and sturdy looking loomed over top of her, and she saw it as her one chance. Throwing her arms out, she wrapped it around the shadow hovering over the water and pulled, lifting her head just high enough to cough and gasp for air.

She felt something smooth beneath her fingertips, squishy, like skin. Oh no... Blinking a few times to try and clear her eyes, her vision returned slowly, bleary at first, but it was clear enough to see that she had thrown her arms around Cassie in what any passerby could easily have mistaken for a loving embrace.

Cassiopeia smiled lovingly at her sister, but Kat knew better than to assume anything but the worst. The naga's claws wasted no time slipping in between their bodies, grabbing handfuls of Katarina's titflesh with a lusty growl. She had her bound so thoroughly in her long, powerful tail that she hardly needed her paws to hold her still, freeing the naga to savour the feel of her sister's bigger chest pillows. Katarina had blown her chance to play nice though, and now Cassie wasn't being nearly so gentle, her claws leaving deep, red scratches across her chest. The naga wouldn't be satisfied with foreplay though. Her scales were pressing against Kat's thighs, gliding across her lower belly. The running water was getting choppier as the naga shifted constantly, lining her body up just perfectly...

Pressing their bellies together, both women gasped at once. At last, the naga's twin spears had found their mark. The smooth shafts slid back and forth, the underside of one rubbing against Kat's netherlips, while the other one jabbed uncomfortably at her thigh. She tried to line them up again, but Kat wouldn't quit squirming, screwing it up each time, until finally the naga lost it. With a furious hiss, her tail arched briefly before slamming forward, burying one of her slickened cocks into her sister's tight little twat.

Katarina screamed as she felt the smooth, fleshy tool barrel its way inside of her. It didn't hurt like Shyvana's had. The smooth surface made penetration easier, and the smaller size let it fill her without stretching to the point of tearing. But the knowledge that she was being raped by her own sister in her moment of weakness was so much worse than being ravaged by a monster who'd been too strong for her.

Cassiopeia was in heaven. It was rare enough that she got to toy around with anybody since the change, reduced to self-exploration. But this was just so much better than that. Before she'd been cursed, she was used to being filled, but this was the first time she'd ever gotten to see how the other side lived. No wonder men were such pigs. Her sister's snatch was heavenly. Katarina's sex fit her cock like a glove, her pussy clamping around her maleness in a vain attempt to keep it out, but it was so slick that her cunt muscles couldn't find purchase, couldn't grip it tightly enough to stop it from pistoning in and out of her relentlessly. Her tail continued to arch and curl, pulling her 'hips' back to slam them forward again, churning the water as she pounded her sister relentlessly. At last, release. Real release, with another person! It was a shame her big sis wasn't more willing, but at this point Cassiopeia just didn't care.

Katarina was right about one thing though. Between her long withheld desires, the unfinished blowjob, and now her sister's snug love canal, there was no way Cassie would last long. Her other cock was leaking precum into the water, flopping against Kat's belly and rubbing against her neatly trimmed landing strip, the hairs tickling her sensitive length. The one buried inside her tunnel kept drilling deeper, thrusting in as far as it would go. The pointed tip of it was pressing right up against the girl's cervix with every thrust.

Katarina had no idea how potent her sister's seed would be. Unnatural as it was, she could've been sterile for all she knew, but she was already taking her chances with all the many, many loads the half-dragon had dumped in her. If she was lucky they wouldn't be compatible, but she couldn't afford to risk it. Hands balling into fists, she started pounding away at the naga's shoulders. Her legs wanted to kick too, but she could barely move them an inch.

“Cassie! Cassie, stop!” She wailed, lifting her head and trying to catch her sister's gaze. The naga's eyes were glazed over, and she seemed like she was staring straight through her sister, lost in her own little world. “You have to... Nnngh! For the love of God, Cassie, pull out! Aaahn!” Katarina was struggling to even think straight, the serpent's shaft fit inside of her so perfectly, pressing against her inner walls on all sides. “Fuck, if you get me pregnant- Ooooohh Gooood...” Gritting her teeth, Kat grabbed either side of Cassie's face and forced her to look down at her, panting and heaving as she was. “You'll destroy our family name you stupid, horny bitch!”

Cassiopeia just gave her a quizzical look. Giggling to herself, she arched her back and kept kneading Kat's bouncy breasts together. “Silly Kat, girls can't get each other pregnant!” Shaking her head free, she shut her eyes and curled her fingers, loving the doughy feel of her sister's bosom.

Katarina was left staring in awe. Was her sister playing dumb, or was her mind rattled that much by her restrained lust? She was hardly a 'girl' anymore. The dawning realization that she couldn't stop the naga from filling her with her essence nearly broke her will. What was the point? If she was screwed either way, she might as well enjoy it. Kat shook her head. She couldn't give in to thoughts like that. If she took the easy way out now, what would stop it from happening again and again? What would stop her from growing to crave it? She was better than some cheap gutter whore!

Eyes opening wider, Katarina pounded at her sister with enough force to leave some bruises. Damnit, why couldn't she deter her? It was like the pain didn't even bother her. Such a dainty figure, it's not like she could just endure it like the half-dragon could. With an agonized cry, Kat felt Cassie's cock swell in anticipation. Knowing just what kinky things the serpent had experienced, for all she knew the naga might've even gotten off on pain.

Water sloshed back and forth, the naga rutting her sibling, unconcerned by the mental struggle she was going through. Playing with her soft bosom, Cassie nuzzled her face into Kat's cleavage. What she wouldn't give to be as well endowed. She could feel her emminent release building pressure inside of her. Her shaft was swelling wider in preparation for the oncoming flood. Warm precum was mingling with the icy water flooding Kat's nethers with each thrust. It was time, finally! Squinting and curving her spine, Cassiopeia let out a drawn out hiss as she felt the cum rocketing through her sheathed prick.

Between all the pre-seed which already slicked her prick, plus the fact that she was half submerged in the river, Katarina barely felt the potent spurts of cum filling her, but she could feel the way the naga's pole pulsated and throbbed, the smooth rod undulating as thick wads of cum pushed through it to paint her insides and fill her womb. Fresh tears welled up in the corners of her eyes.

With a satisfied sigh, Cassie pulled her softening dick from her sister's soaked sex. A torrent of milky semen followed, turning the water a hazy, off-white colour around them, a trail of it floating downstream. “Aaah! That wass one...”

Kat's eyes bugged out of her head. “Oh god, no...”

The snake's coils rippled, her smooth belly scales sliding across Kat's flesh as she repositioned herself quickly. Shifting her angle a few inches lower, she jabbed forward with her second cock, the polished shaft plunging inside of her easily. Human arms wrapped around Kat's shoulders, contrasting sharply with the monstrous claws dragging across her back. Cassie pulled her sister into a hug, letting their soft, pliant breasts press together. Stiff, perky nipples scraping against one another.

The water had only just began to calm when Cassie started to thrust again. Their loins mashing together rapidly turned the surface choppy, small little waves briefly submerging Kat further beneath the surface. With the amorous serpent pressing even more of her weight down against her, Katarina threw her arms around her neck, holding on for dear life just to keep her head afloat. Their gaze meeting, she could see the childish glee in Cassiopeia's glowing orbs. She just hoped the naga could see the vile hatred in her own.

Slamming forward particularly hard, Cassiopeia laughed as her sister's mouth made a perfect O, forcing her to moan as her spent length rubbed against her clit each time she thrust forward. "Mmnnn, are you finally letting yourself go Kat? Think of how much more fun we could have together if you did!" The naga's throat rumbled, her first cock stimulating itself as it rubbed against her sister's thighs and her lower belly, sliding across her skin underwater. At this rate, it'd be hard again just in time to take over once her second emptied its load. "Jusst think, oncse thisss battle is over, we can ssspend all the time in the world together in the privacsy of our own home."

Katarina's face went pale. Without even thinking about it, she struck her sister across the face, slapping her with enough force to leave a red mark across her cheek. Her thrusts slowed to a stop, and without her stiff rod jabbing her in the crotch, she was finally able to speak without interruption. "Cassie! What the hell is wrong with you!? You'll be lucky if I don't kill you for this."

For a moment, it seemed like she might have finally gotten through to her sister. Kat could feel the naga's length retreating, and there was a stunned, remorseful look on her face. When just the tip was left to be removed, she lunged forward again, the girl screaming as it thrust so deep that the narrow, slender tip forced its way straight into her womb.

"What's wrong with me?! What's wrong with you?! I've done everything to get you to enjoy thiss, and sstill you keep fighting me!" Cassiopeia bellowed, her eyes once again taking on that terrifying, deranged light. "Don't try and pretend you're not enjoying thisss. The high and mighty Katarina iss a ssslut, just like her sssissster."

"You're acting like an animal!" Katarina tried to strike her again, but Cassie was ready for it this time, catching her wrist and nearly crushing it in her gripl.

"Well, if you and everyone elssse are gonna treat me like one, then that'sss how I'll behave." The naga began rocking her hips again, her length sliding smoothly through her sibling's tunnel.

Katarina grimaced, trying to fight back the little sounds of bliss her body was trying to make. "What would father say if he saw you doing this?"

It was Cassiopeia who slapped her this time, hissing so furiously that her tongue was flicking spittle into Kat's face. "Don't talk about him!" She hesitated, looking almost solemn. "...You alwayss were hiss favourite..."

The naga's length softened a bit, and Katarina almost laughed. Even in the middle of an incestuous act, there seemed no easier way to turn off a child then to talk about their parents. "Don't talk like that. You know he had Noxus's best minds working to cure your... Condition. At least until he..."

"Dissssappeared?" Cassiopeia finished, growing angry again. "And who will keep thosse ssselfish fuckss focussed on my plight now? You? Katarina, the high commander, alwayss too bussy off playing gamess in the League of Legends to show concsern for her poor, curssed sssissster." As the naga's rage simmered, her shaft swelled with blood again, growing harder inside of Katarina's snug sex.

"Cassie, wait! It's not like that!" Katarina was in a panic. She was so close to getting through to her, and now she worried she may have made things worse than ever.

"Afterall, why would ssweet, innocent Katarina care about me? She getss to keep her beauty afterall. Daddy'ss ssspecial little girl who'd never debasse hersself with thingss that are beneath her, like casual ssex." Cassiopeia began thrusting her hips again, harshly jabbing her throbbing length as deep as she could. "She'd never shame her family by fucking ssome barbaric half-breed, esspecially not one from Demacsia."

"Cassie! Stop... Stop, you're hurting me!" The naga's hold on her wrist was getting tighter, her sharp claws drawing a small bit of blood. Her coils tightened, pulling Katarina's legs uncomfortably far apart. The assassin felt like she was a wishbone about to snap.

The naga just continued her insane rant, not hearing anything but her own rapid breathing as she ravaged her sister's cunt. "And she'd csertainly never enjoy ssomething as vile as incsesst, sssucking off her curssed sssisster's dick with a sssmile on her facse! You're sssuch a lying whore!"

Rearing back, Cassiopeia opened her maw wide, revealing the massive, sharp fangs that her canines had become. Katarina shrieked at the sight of the dripping, inch long needle-like teeth, right before her sister snapped her head forward, sinking them into her sibling's left breast. Kat screamed herself hoarse, her chest feeling like it was on fire, the serpent's fangs hooked in her flesh. She tried to hit her sister with her free hand, only for the snake to catch it with hers, pinning both arms under the water.

Cassiopeia's cock pulsated with need. A ripple traveled down the length of her bloated prick, a large glob of precum shooting into her sister's pussy once it reached the tip, with several more following right behind. The fangs in Kat's flesh held her still, threatening to tear through her skin if she tried to struggle.

Vasginal muscles clenched, trying to slow the naga's rapid thrusts, but her thick organ couldn't be denied. The slimy, oozing prick kept pressing deeper without any resistance at all. Cassiopeia barely even had to move her body, her cock was just prehensile enough to thrust and pound Katarina's slit on its own, quickly reaching the point of no return. Cassie pulled her teeth from her sister's soft titflesh, throwing her head back in jubilation. Both girls screamed simultaneously as the naga climaxed again, flooding Kat's snatch with a second load of bitter cum, filling her until it overflowed, further tainting the river with her spunk. Her second shaft spent, Cassie pulled out slowly, lifting her torso up high on her tail to watch all of her excess cum flow downstream with a look of satisfaction.

Katarina was panting heavily. Her brow felt damp, though she couldn't tell if it was sweat or just water. She felt hot all of a sudden. Even fully submerged in the chilly water, her chest was practically on fire. Sweat was gathering on her forehead and around her neck, and she could feel something oozing from the bite mark on her chest. The naga releasing her hands, she reached to wipe the quickly bruising area clean. Kat squinted, eyeing her hands in bewilderment. Instead of the bright red blood she was expecting, her fingers were coated in some dark, violet fluid. Her mind began racing, quickly putting two and two together. That bitch had poisoned her!

"What's wrong Kat? You're looking a bit under the weather." Cassiopeia smiled that coy, seductive grin of hers, leaning forward to scoop her sister up into her arms.

"You... Bitch!" Katarina winced as she was lifted into the air, the naga's arms wrapped around her waist and cupping her ass cheeks. The fire in her chest was slowly dying, being replaced with an uncomfortable numbness and a strange, sudden heaviness.

"Tsk tsk, such vulgar language." The naga clucked her tongue. She gave the puncture wounds she'd left a gentle lick, lapping up the trail of venom trickling down her breast.

Katarina was unprepared for the jolt that went coursing through her spine. Her muscles felt numb, but her nerves tingled with every touch, feeling more sensitive than ever. Her arms hung at her sides, going limp as the venom circulated through her system. If she put all her effort into it, she could move them a little, but she almost fell out of her sister's arms just by lifting an arm. Her sense of balance was completely off. It was like the left side of her body weighed more than the right.

As Cassiopeia's roaming tongue found it's way to her perky nipple, Kat groaned loudly. The serpent's slipped her sister's stiff nub into the split in her tongue, vibrating it the same way she had against her clit earlier, to much the same effect. Katarina arched her back, and cried out in surprise. Her breast felt like it was nothing but a bundle of tightly wound nerves. Pressing her lips to her sister's bright, pink areola, Cassiopeia slathered her sensitive teat in her drool, soaking it until it glistened and suckling from it gently. She delighted in her soft little moans. Every sound Kat made only encouraged her more.

Once again Katarina found she was at war with herself, her body wanting her to just give in to the intense sensations, while her mind fought to remind herself she was being raped. Averting her eyes, she tried not to watch the naga lather attention onto her soft melon, but after a few moments, she found she couldn't take her eyes away. Something was off. It almost looked like her left breast was... Bigger somehow. No, it definitely was. It had to have swollen nearly a full cup size larger. Her mouth gaped as she realized how lop-sided her chest had become. No wonder her equilibrium felt off. She tried to focus, but increased sensitivity and the naga slurping on her tit was making it a chore. Her breast was definitely still growing though, her skin stretching as her mammary expanded before her very eyes.

Cassiopeia could see the way her eyes were practically popping 0ut of their sockets. "I see you've noticed my little 'gift." She sucked on her udder, pulling it out and stretching it, until it slipped free of her mouth with a wet little pop. "Just a small side-effect of my poisson." The snake laughed maniacally as she moved to Kat's other breast. The contrast was sharp as the pleasant tingle there was nothing compared to the bottled lightning in her left. "I was always so envious of your chesst, but I figured , why not let bygones be bygones? I think I'm suddenly okay with you having a bigger bust than me." Opening wide, violet venom dripped from the tips of her fangs, saliva making them glisten. Katarina screamed, the naga sinking her teeth into her soft, plitant skin, breaking it so cleanly that nary a drop of blood spilled out.

"God, Cassie, no! Th-this is going too far! Way too far!" Katarina protested. The numbing effect of the poison seemed short-lived. She was already getting the feeling back in her extremities when the second dose simply renewed it. She lifted her shaky arms to try striking her sister back, only for them to fall away limply once more.

Again, there was that same burning sensation in her chest, the suddenly incredible sensitivity, and then her breast began to expand. It was easier to notice now, and she groaned as her body fell forward from the new weight gathering in her bosom. Cassiopeia didn't seem to mind having Kat's pillows mashed into her face though. Kneading her sister's wet ass cheeks, Cassie licked and nibbled all along the insides of her swelling mammaries, teasing her newly sensitive skin as her tits grew large enough for the naga to hide her face between them.

Katarina threw her head back and forth in a blind panic. What had the naga done to her? Her left side was nearing the size of her head with no signs of stopping, and it was only a matter of time before the right caught up. All it took was two bites, and her figure had been destroyed. Years spent training herself and honing her form, perfecting her balance so that she could fight in spite of her uncomfortably large bust size weighing her down. Now she'd be lucky if she could support her own weight without breaking her back. Even that trashy slut Miss Fortune didn't have to put up with knockers this big!

Cassiopeia tried to say something, but it just became muffled within Kat's cleavage. The girl's tanned skin was stretching so thin to accomodate her enormous bust that the veins were showing through her skin, blue-violet from the poison still coursing through them. With so much weight added to her chest, her breasts couldn't maintain their perky shape, gravity tugging them down and making them sag a bit, though not nearly as much as they should have, all things considered.

Pulling her head back to breathe, Cassiopeia nearly suffocated herself in between her sister's massive pillows. "There, now your appearance matches how big of a slut you really are."

Katarina snarled like an animal, gnashing her teeth and willing to bite the snake right back if she could reach. Her expanding bust was actually pushing the two of them further away though. "I'm not a slut! You did this to me! You and that blasted dragon!"

Twisting her sister in her grip, the naga wobbled as she rotated the girl in her arms. Her tail swayed unevenly, trying to maintain her own balance as she turned Kat so that Cassie's own breasts were mashing against her back. "Don't make me laugh. Deny it all you want, but you know you've been loving this." Cassie bent her tail, pushing the scaly limb between Kat's legs, almost like a seat for the naga to rest the girl's weight on. However, she was merely freeing her hands to play with her sister's new chest. Even with her long fingers splayed and stretched out though, Cassieopeia could hardly hold her heavy chest up. The girl's flesh spilled out of her hands like bags of fat. The way they jiggled and shook as she bounced them in her palms and smacked them together entertained the serpent to no end, even as it made Katarina throw her head back and forth and writhe like mad.

Sharp teeth nibbled at Kat's collarbone, interchanged with Cassie's slender tongue trying to tickle her. Katarina lips were curled into a grimace. She threw her head back swiftly, trying to crack their skulls together, but Cassieopeia was swift enough to pull back at the same time.

"Doesn't this feel gooood Kat? You can't hide it from me." Cassie's fingers deftly captured her sibling's nipples between her fingers. Rolling them back and forth, she twisted them gently, showing remarkable skill as she avoided piercing them with her claws.

No matter how hard she grit her teeth, how much she shook and squirmed, Katarina couldn't hide how much pleasure she was getting from this. Her own juices gushed from her excited cunny as she ground her hips against Cassie's scales, mixing with the naga's cum. Her breasts seemed to finally stop their steady expansion, having ballooned outwards larger than her skull, like a pair of bowling balls hanging off her chest. The naga was mashing them together hard, til flesh bulged between her claws like rubber. And, as much as she wanted to protest, to fight it, the poison made each touch feel a thousand times greater, and each scratch was that much more painful.

"Jussst sssurrender Kat..." Cassiopeia nibbled on her sister's ear, whispering into it while her tongue tickled her earlobe. "Agree to keep me company so I'm not so lonely anymore, and I can keep you feeling like thisss all the time." The snake's tail started to saw back and forth, dragging itself between Katarina's thighs, her fluids smearing a trail across her scales. "Is your dignity really worth giving up the pleasure I can bring you?" A squishy, fleshy bump slid past the girl's slit, followed by a second, then sliding back to do it again. The serpent was letting her twin shifts grind against her flower petals, both hard and aching for another go. "Together we'd make the most gorgeous couple, don't you agree? Don't you find me... Beautiful?"

Katarina hissed, squeezing her thighs together to try and keep Cassie's dicks at bay. "You're as hideous now as you've ever been Cassie," she snapped. "You were ugly even before you were cursed."

That was not the answer the naga wanted to hear. She seethed with fury and pulled hard on her sibling's chest, raking her skin with her claws. "Bitch! Who ssayss I need your consssent anywayss?" Her cocks throbbed, rising to attention. A swift buck of her serpentine tail launched Kat a foot into the air. Her scaled limb rippled and flex, thrusting up to catch her sister in the air and impale her on her upright staffs.

Katarina yelped, her boobs clapping together and bouncing wildly from even the slightest movement. Then suddenly she was impaled, one of her sister's thick staffs plunging back into her sex, while the other one slipped between her ass cheeks. Still coated with cum and that natural layer of slimy pre, as well as Kat's own slick juices, it slid into her rear end with surprisingly little resistance. The thin, pointy tip aimed perfectly to pierce her tight little rosebud and drill through her innards.

Catching her sister's immense weight, Cassie's torso swayed to and fro to maintain her equilibrium. Lowering the heavy-chested woman back into the seating position she had her in before, she wasted no time stuffing her holes. The snake's dual pricks thrusting of their own volition. They'd retreat back into her vent a couple inches only to spear Kat's pussy again, the one in her ass twisting into a mild corkscrew as it wormed its way through her colon.

"Aaaaahhh! Stop! It's- it's too much! Cassie, stoooop!" Katarina's pleas fell upon deaf ears. Where once she might have at least been gentle, now the naga just wanted to see her sister squirm. Claws manhandled her bosom roughly, bouncing them in her palms, while Cassie ground her chest into her sister's back.

Precum spilled from Katarina's sex, accompanied by lewd, sloppy squishing sounds. It gushed down across the snake's belly, occasionally spraying into the water. More of it trickled down the crack of her ass each time Cassie slammed into it with a messy schlorp. She couldn't believe how tight her sister's backdoor was, or how perfectly she could fill both at once. It made her regret not doing this from the start. Her asshole wasn't as slick or wet, but it was tighter, so much so that her anal muscles could actually squeeze hard enough to make thrusting a chore. Which just made it feel all the more satisfying when she worked up enough speed to properly fuck her tight anal ring, spitting enough pre into it to turn it into a frothing sticky mess of white goo. Best of all, she could feel her own shafts stimulating one another at the same time as they were being massaged by Katarina's spasming muscles. The twins were pressed together by the tight confines of Kat's body, separated only by her sister's thin vaginal walls.

The matching set of cocks were uneven in their thrusts, the one going into Kat's ass having to go a bit slower. They began double-teaming the red-head at the same time, but before long they were taking her in alternating strokes. Occasionally they would sync up again, slamming both shafts in at once and breaking Katarina's attempts at silence, tearing the passionate moans from her hoarse throat.

"Sssay it..." Cassiopeia hissed, squishing her sister's breasts together like water balloons. "Beg me to usse you for a cocksleeve."

"Never!" Katarina gasped. She tried to move her hips away, to make it harder for the naga to keep plowing her, but the serpent's tail undulated and slithered back and forth, keeping parallel with her hips at all times.

"You might as well, I already am anyways." Cassie let one of her fangs graze the outer edge of her sibling's ear. Her sizeable shafts jackhammering her next of kin, she let out a husky moan.

Katarina hated to admit it, but her slippery sister was right. Her cunt muscles spasmed and gripped tighter, some of her juices squirting outwards around the thick pole stuffing her slit. The longer this went on, the more desperate she was becoming. The assassin had that one, brief, amazing orgasm when they'd first began, and Cassiopeia had been keeping her on edge ever since. Expertly bringing her to the brink of ecstasy then slowing down just enough to keep her from Kat from her peak. And now she was closer than ever. She knew the naga was just waiting on her to submit. She just wanted to prove herself superior...

Maybe she had been going about this wrong all along, Katarina smirked. "What'd be the point in begging for your dick? Nngh! You've got two of them but you hardly know how to use either one!" Katarina winced as her sister slammed into her especially hard. "You're lousy at this..."

"What?!" The naga hissed, some of her spittle catching the side of Kat's face. "I've made Men and women alike quiver from jusst a touch! You feel only as much pleassure as I want you to."

"Sure they weren't just trembling from how hideous you were? I mean, was it really any wonder they wanted to dress you up like me?" Katarina was breathing deeply, doing her best to keep her voice steady, even as Cassie's grew more laboured from the constant fucking.

"Hah... I wass the pretty one! Aah, hah... Not you!" Cassiopeia was bucking her hips, her tail bobbing up and down and bouncing Kat on top of it. The barbs were getting to her. She tweaked her sister's nipples as she bounced in her 'lap'.

Katarina choked back a moan. The numbness in her extremities was fading again. Her fingers wiggled experimentally, testing how much feeling had returned. The snake had been screwing with her head and her body since she'd woken up. It was no wonder she couldn't think straight, all the touching and teasing was keeping a fog of lust hovering over her mind. But now she at least had a way to maintain some modicum of self-respect. She could turn the naga's teasing back on her, make her feel inadequate if she could resist cumming for her...

A sharp thrust quickly put an end to any thoughts of outlasting the snake. Cassiopeia forced both lengths into her body at once, and Katarina nearly lost it, arching her back and biting her lip to stay quiet. Still, if she could goad the naga into making her cum without having to beg, she'd preserve at least some of her dignity.

“Ungh... So, how many partners do you figure faked it so you wouldn't feel bad?” Katarina leaned forward, her heavy chest weighing her down as the naga loosened her hold on her bustline, moving to grip her thighs instead. Her bronzed skin shimmered with sweat, the serpent hoisted her sibling up and dropping her back down on top of her needy members, stabbing deep into her core. “Five? Ten?”

“Hah, I ussed to bed that many a week. If that few were all I ever dissssappointed, I'd sssay that wass a pretty good record.” Cassiopeia grinned from ear to ear, her warm breath tickling the back of her sister's neck as she moved to kiss and nibble on her earlobe.

“Really?” The human wheezed, in between bouts of mocking laughter, trying not to focus on the way Cassie knew just the right spots to tease with her lips. “And you're really trying to pretend that I'm the slutty one?” Pressing her newly mobile hands to the underside of her hefty bosom, Kat wrapped her arms underneath them to support the immense burden. Clenching her muscles, she ground her hips back and forth, riding Cassie as best she could, her breasts jiggling non-stop from every movement.

“Shut up! Jussst... Ohhhhhh!” Cassie screwed her eyes shut, her sister's tight ass squeezing her cock harder than she could've imagined. Globs of precum were working their way up her shaft, firing into her sibling's holes in quick spurts. She was about to cum again, and again. Her twin lengths pulsating at once, throbbing with the need to spill their seed. If Kat thought the naga couldn't make her cum, she was dead wrong. She'd show her, no one could resist Cassiopeia. The end of her tail snaked its way up one of Katarina's dangling legs, spiralling up the length of it, til the very tip was hovering just an inch away from her sister's sensitive little clit. Rattling and shaking it back and forth, she pressed it to the red-head's delicate button.

Throwing her head back and yowling like a wild animal, Cassie's twin shafts suddenly convulsed. Sheathing both at the same time, they swelled and thickened out as a third and fourth load of cum erupted from the tips. Overwhelmed by two simultaneous orgasms, a shudder ran through the entire length of the serpent's body. When it reached the tip of her tail, it sent it vibrating against Katarina's clit, buzzing against it so fast that it pushed the two of them over the edge together. The incestuous pair screamed and moaned in unison, girlcum spraying out around Cassie's rigid staff, while warm ropes of semen spurted from the tips of both. Her spunk didn't burn like Shyvana's had. Instead it was more of a pleasant, tingling warmth. Only the knowledge of who it belonged to made Katarina sick to her stomach.

The two women basked in the throes of orgasm. Cassie's paws slid to her sister's hips, holding her flush against her vent, savouring the warmth of her fleshy tunnel and backdoor, both of them oozing a trickle of her jism. Both swollen shafts slowly went limp, each spurting one last small wad of cum. Sliding from Katarina's pussy with a vile schluurp, the first flopped forward limply against the snake's belly, making a wet slap as it smacked against her scales. Hefting her sister into the air, the naga watched and giggled as the one in her ass followed suit, dropping her used up cum rag back into the water unceremoniously.

The semen-dribbling assassin sputtered and flailed in the water, her newfound mass making her sink like a rock. Her bust was so huge now though that she could keep her head above water, albeit uncomfortably, just by laying atop her chest. Her breasts sunk into the mud and she tried to lift herself off of them on quaking arms, but just didn't have the strength.

Grabbing a handful of her kin's red hair, Cassie used it for a rag to wipe some of the cum from her scales and clean off her spent cocks. The feel of those silky locks rubbing against the sensitive shafts quickly made them stir back to life though, fresh dollops of pre oozing outwards. "Oopsies, looks like you'll have to get yourself all cleaned up again sis," Cassiopeia snickered. Bending over, she rested her hands against her sister's shoulders, lightly caressing her supple skin. "But don't worry, I'm still willing to lend you a hand, and myself as well..."

Oh God, it was happening again. Grinding her teeth in frustration, Katarina refused to go through another marathon rape session. She was exhausted, both physically and mentally, her breathing strained. Shutting her eyes, she moaned softly, making the naga giggle and tease her.

"Oh? Ready for round three? Gonna play nice now Katarina?"

Kat nodded her head, lifting her ass up into the air enticingly. Just as she predicted, the naga zoomed in on her cushy behind, her hands eager to give it a squeeze. She didn't notice Katarina's hands reaching into the brush, her fingers curling around the thick piece of wood she'd spotted earlier. To Kat's surprise, instead of the rough textured bark of a fallen tree branch she was expecting, it felt smooth, polished. And dense.

The naga slithered forward, rubbing her belly against her sister's behind, one of her lengths sliding between her cheeks. Leaning overtop of her older sibling, Cassie lowered herself to tease her ears again, and that was when the assassin struck. Venting her rage at being so powerless, Katarina roared furiously, twisting her body and swinging at the serpent with the hunk of wood. Throwing all her weight into the blow, it collided with Cassiopeia's skull with a satisfying crack. Stunned, the serpent fell aside, going facefirst into the water.

Breathing deeply, Katarina pushed herself to her knees, resting her hefty chest on one arm to support it, the blunt weapon she'd found still clasped tightly in the other. The naga's body was still, laying lifelessly in the water. Watching it intently, she looked for any sign of movement. Reaching out with the wooden stick, she moved to poke her sister with the wide, coned tip. Hesitantly reaching out, the tip was just an inch away when Cassiopeia threw her head out of the water with a large splash, startling her. The end of her tail quickly came up from behind the human, wrapping around her neck and strangling her.

"You bitch! I'm going to kill you! I'll tear you to ribbonsss!" Lashing out with her claws, Cassie slammed her palm into Kat's chest, shoving her back into the water, her other hand motioning to grab the weapon from her hands... And it was only then that either one of them truly realized what Kat had found.

A small, smoothly carved wooden handle with a wide, stubby cone on one end, fastened from some sort of green gemstone, flanked on both sides by a pair of ornate wings. The insides of the gem were a swirling, misty green haze, like some mystical fog had been sealed within. A sight ward. A magical item of relatively simple construction, frequently used in Summoner's Rift as a means of spying, watching for ambushes or enemies hiding in the bushes. One need only plant the handle into the ground, and they and their allies alike would be granted sight of the surrounding area until such time as the ward ran out of power.

"Kat... Isss thisss yoursss?" Cassiopeia's tongue flicked out, sensing the air nervously, her bright eyes darting back and forth.

"Nnnno." Katarina was just as hesitant. Both women gave one another a quick glance, their hands gripping the handle together. Without a second thought, both of them acted in unison, smashing the ward against a rock and shattering the gemstone top.

But that wouldn't change the fact that both of them were exposed. Their enemies knew exactly where they were.

"How long hass that been there!?" The naga screamed and panicked. She twisted and turned, expecting an ambush any second.

"Oh God, how much did they see?!" Katarina climbed to her feet. She barely managed to get standing before stumbling forward and falling back into the water. Fuck, her breasts! Her equilibrium was completely destroyed. She couldn't carry these behemoths around!

"We need to get out of here!" Her arousal faded fast as even the naga and her one-track mind knew what danger they were in. Her dripping shafts going limp in the blink of an eye, slowly retracting back into her vent like a pair of worms.

"Cassie!" Kat scooped her bosom up into her arms, looking to her sister with pleading eyes. "I can't travel like this! You-you have some kind of anti-venom or something... Don't you?"

Looking down at her sibling with disdain, kneeling there, her once perfectly sized chest swollen to comical proportions and oozing cum from both holes, the naga sneered. "You know, suddenly, I'm not so jealouss of you anymore."

"Cassie?"

"Ssorry Kat. But look on the bright sside, your sacrifice will allow me to escape." Turning her back on her family, the naga slithered off, leaving her sibling behind as a distraction.

Or at least, that was her intent.

The sound of gunfire nearby grabbed both women's attention, a loud bang followed by the whistling of the wind as something sailed through the sky towards them.

"Geronimoooo!"

Cassiopeia was startled, backing up and narrowly avoiding getting clobbered as a yordle, of all things, fell from the sky, landing just ahead of her. The naga barely had time to blink, catching only a flurry of white hair and blue skin as the pint-sized humanoid whirled on her, a massive, wide-barrelled cannon clutched between her stubby arms. The weapon had to be half again the size of the small creature, who barely stood as high as her waist when she kept her belly low to the ground.

"What the-"

"Ka-boom!" Squealing in an excited, childish voice, the yordle fired her weapon. There was a loud boom and the yordle was knocked off her feet by the recoil as a massive cannonball blasted Cassiopeia's abdomen at point-blank range.

"-fffffffuuuuuck?!" The cannonball struck with such force that the naga was launched into the air, shooting into the sky like a firework. At the peak of it's journey, the explosive sphere blew up in a sparkling display of fire and shrapnel, launching the serpent even further, until she was just a dot on the horizon, falling back into the treeline miles away.

The yordle held a hand to her brow, blocking the sunlight from her eyes and watching the snake vanish into the distance. "Whoops, maybe a bit too much gunpowder that time."

The whole thing happened so fast, Katarina could hardly even register it. Still kneeling and clutching her chest, she took a second to examine her 'rescuer'. She couldn't have been more than three feet tall at best. Her bare, baby blue skin and humanish face, were unusual for a yordle, as was the short mop of white hair. Their race were usually almost rodent like in apperance, with thick coats of fur and short animal-looking snouts. If it wasn't for her skin colour and her pointy, elvish ears, she might have been mistaken for a human child. How someone that small was able to carry such a big gun, not to mention a large pack of cannonballs slung over her shoulder, was a mystery.

Most disconcerting though was the outfit she was wearing. She was dressed in military garb, but not just any regular soldier's outfit. The yordle was wearing the signature brown fatigues of the Megling Commandos, the fiercest fighting force in yordle history. And there was only one member of that elite group that had ever become a champion of the League of Legends.

Tristana eyed the, red-headed girl in return, drinking in the sight of her nude, wet form and the gargantuan mammaries that were nearly as big as the yordle herself. A lascivious grin crossed her face, her hands stroking the barrel of her cannon suggestively.

This was going to be fun.