Chapter 0 - Sibling Bet

Sibling Bet

After the Quincy War…
Woods behind Shihoin Manor

Yoruichi stretched her arms behind her back as she walked through the green forest that stretched out behind her clan's ancestral home. Dressed in her black leotard, she hummed as she felt her bones pop back into place. After spending so much time being bedridden it felt good to finally get out and stretch her legs.

The woman had been recovering from her battle with the Sternritter, Askin Nak La Varr, at the Shihoin Manor after the war had ended. Once Nel had saved her and the others from Askin's deathtrap, Kisuke brought both her and her brother, Yushiro, here so they can get proper treatment for the poison that the Quincy had hit them with.

While her brother mended quickly despite the grievous injuries he sustained, Yoruichi had been the worse of the siblings. She'd already been badly poisoned by the Sternritter and his deathtrap exasperated the problem. It took a full week for Kisuke and the other medics to fully detox her and then another two weeks of bedrest for her to recover her strength.

"Ahhh," sighed Yoruichi, pulling up her leg behind her and stretching her muscles. After all the time sleeping and lying in agonizing pain in bed, what she needed now was a good run. "I'm thinking to the edge of the woods and back would be a good start. Then I'll go and see how Byakuya and the others are doing." She took a stance and steadied her breathing. She readied herself to Flashstep away. Just before she took off, she felt it.

She was not alone.

The hairs on the back of her neck stood up when she sensed a presence nearby, lurking in the darkness of the forest. She felt eyes staring at her naked back and her leotard-covered booty. Her eyes narrowed and her body tensed. The barefoot woman cautiously took a few steps forward.

Out of the shadows of some bushes sprang a shadowy figure, lunging for the purple-haired beauty from behind. "SIS!" Yushiro Shihoin shouted, arms outstretched to embrace his older sister. Unfortunately the older Shihoin didn't share his affections. Instead of accepting her little brother's hugs, Yoruichi disappeared from sight and Yushiro ended up faceplanting straight into an oak tree.

"Ow…" Yushiro groaned, laying on the ground while a comical lump started forming on his forehead. "Sis…why'd you do that?"

Standing over Yushiro, the older sister scoffed while looking down at the cute leader of her clan. "Yushiro, how many times have I told you to stop sneaking up on me?"

"The servants told me you were out of bed. I wanted to see how you were doing." Yushiro slowly got up and nursed the lump on his head. "How are you feeling?"

"Better," Yoruichi curtly said, clearly annoyed by her little brother's interruption. "The better question should be what are you doing out of bed?"

Yushiro grinned and opened his vest, showing the scar where Askin's arrows left. "I'm all better! The doctors healed my lungs up good!"

Yoruichi sighed. "Just try not to get shot next time? What did I tell you about rushing in blindly?"

"Don't do that?"

"Bingo. And what did you do? You rushed in blindly after he already said he'd absorbed your hit."

The young clan leader crossed his arms and pouted. "Not my fault. You know how much I hate it when people think I'm a girl."

Yoruichi could only stare at Yushiro with a deadpanned expression. "It would probably help if you didn't look like such a tomgirl. You should really change your appearance a little. I remember how when we were younger everyone considered you to be my little sister."

Yushiro shrugged. "I can't help it if I share my looks with my beautiful big sister."

A shiver ran up Yoruichi's spine when she heard Yushiro talk while he looked at her. Sometimes she felt like her brother's affections were a bit… too affectionate. She understood that he deeply loved her but often it was hard to handle. Especially with him being so damn huggy all the time.

"Okay, what do you want, Yushiro? Don't you have our clan to run right now since you're back on your feet?"

"Oh, I'm letting the servants handle everything today. Right now I just wanted to be with my big sister."

Turning away, Yoruichi groaned and facepalmed. She wanted peace and quiet. With Yushiro around, peace and quiet were not on the table. She needed to get rid of him and sent him back to the manor. An idea came to her and she smiled, turning back to Yushiro. "Okay, I'll play with you."

"Really?"

"Yep! You've been practicing your Flashstep?"

"Every day!"

"Good. I want to see it. So why don't we have ourselves a race, like we did when you were little."

Nodding his head furiously, Yushiro was overjoyed. "So where are we racing to? And what are the stakes?"

"Hmm…let me see…" Yoruichi tilted her head up and tapped her chin with a finger, pretending she didn't already have her winning condition in mind. "How about…the winner…gets to make one demand. And the loser has to agree to it, no matter what it is?"

"Really? You'll do anything I ask?" Yushiro's eyes widened and he couldn't help but show the excitement on his face.

'Well that wasn't hard to get him on board.' "Of course. If you win, I'll do whatever you want." She winked at him, finding his enthusiasm cute. 'And when I win, I'll tell you to leave me alone for the day and get back to the clan.' Yoruichi hadn't fully recovered from her poisoning and wasn't in top shape but wasn't bothered.

"Alright, Sis, I accept. Where are we racing to?"

"To my old playground. The shack that covers the entrance. You remember?"

"Yep."

"Okay. On three…" She took a stance and watched as Yushiro did the same. "One…two…THREE!"

The siblings took off with twin bursts of Flashstep. Yoruichi hurried to her secret base, smiling to herself. She knew her brother had gotten better but he wasn't faster than her. The only people who could compete with her in terms of speed were Soi-Fon, Byakuya and possibly Ichigo. 'Hmm, you know, I wonder just how fast Ichigo has become. Maybe when I get back up to one hundred percent recovered I should see if he's up for a race? Who knows?' Yoruichi couldn't help but give a perverted smile. 'Maybe we could have a race of our own. I know what I'd want for my reward. I've seen him in the hot spring.'

But that was for later. As soon as she made it to her hideout and made Yushiro leave her alone, she was in dire need of a drink. 'Guess I'll pay Kukaku Shiba a visit. Hope she's got the sake ready. I've stayed in bed too long and now I want to party!'

She saw the hideout's shack in sight and sighed in relief. There was no sign of Yushiro. 'Guess he hasn't been keeping up his practice after all. I'll have to give him a light scolding before I send him home.'

It wasn't that she didn't love Yushiro. She truly did love her little brother and she was proud that he'd accepted the responsibilities as clan head like a man. But his constant affections were aggravating and she had the faint suspicion that Yushiro's love for her was slightly less than professional, even if Yushiro didn't realize it himself.

Reaching the door, she opened it up with a winning smile… and found Yushiro waiting for her inside.

"I WIN!" cried out the happy purple-haired boy. "Wow, I really have gotten better, haven't I, Sis? I finally beat you in a race!"

Yoruichi's jaw hung low and she just stood in the doorway in a state of shock. 'I LOST?! How much of my edge have I lost lying around in bed?' "I…You…How did you beat me?"

Yushiro scratched the back of his head. "Oh, I only just got here. I only beat you by a few seconds."

Sighing, Yoruichi shut the door behind her. "Well, I guess you have been keeping up with your training." She gave her brother a rare smile. "It's good to see that you've improved. I might not have fully recovered but a win's a win."

"Yay!"

Inside, Yoruichi was cringing. 'Great, now I have to do whatever he says. Knowing him he'll want me to play with him all day like he used to when he was little.' Turning back to Yushiro, the Flash Goddess sighed. "Okay, Yushiro, so what's your one request? You want to keep racing? Maybe play Tag? Or you want to go get some drinks with Kukaku and me?"

With a happy smile on his face, Yushiro opened his mouth.

"…"

And suddenly it became apparent that his affections for his older sister were very less than professional.

Silence filled the shack. Yoruichi just stood there, looking at Yushiro, her ears growing hot as she processed what just came out of her little brother's mouth. "I uh…" She slapped herself to make sure she wasn't dreaming. "I don't think I quite heard that right. Could you repeat that?"

Like it was the most normal thing in the world, Yushiro repeated his sentence. "I want to have sex with you."

Again, silence became Yoruichi's only option while she tried to understand what Yushiro was saying. "You…YOU WANT TO HAVE SEX?!" Yoruichi gawked, her eyes wide with disbelief. "Yushiro, you can't be serious!"

"I am. I want to have sex with you, Yoruichi," Yushiro said with firm bluntness.

"But..." Yoruichi tried to wrap around what Yushiro's request. "But…we can't! You're…I'm…Yushiro, goddammit, we're siblings!"

"Yes. But I'm also a man." Yushiro crossed his arms and looked at his distraught sister with a serious expression. "And you're a woman. I love you, Yoruichi and I want to prove I'm a man to you. You're always teasing me about my looks. Well now I want to prove how much of a man I am."

Yoruichi took a deep breath and tried to calm down. 'Great, NOW he decides to care about his masculinity.' She shook her head. "Yushiro, no. I won't do this. It's just about the craziest thing you've ever asked for-"

But Yushiro was insistent and he reminded her of something she herself said. "You promised that if I won the race, I could ask one thing from you and you'd do it no matter what."

All Yoruichi could was facepalm and groan hard. "Fuck…I did say that…" She knew she couldn't back out of this. Yushiro would hound her until she fulfilled her end of the bargain. She of all people knew how insistent he was. Pulling her hand away, Yoruichi looked at her younger brother with apprehensive eyes. "Are you sure, Yushiro? What you're asking is…well…incest." The word was like acid in her mouth with the implications.

Walking over to Yoruichi, the young clan head hugged her and buried his face in her cleavage. "I do. I want to have sex with you, Yoruichi."

Sighing, Yoruichi reluctantly hugged him back. 'Okay, calm down, Yoruichi. It won't be that bad. Knowing Yushiro, he'll pull out a two-inch dick, hump me for about five minutes and then blow his load. Then I can grab a Kiokuchican, crank it to max power, and hit myself with it to forget this whole thing never happened.' Patting his head, Yoruichi gave in. "Alright, Yushiro. I'll do it. BUT!" She tilted her brother's head out of her tits and glared at him. "You are never to talk to anyone about this. And we will never speak of this again."

Yushiro once again couldn't contain his joy. "Oh! I promise! It'll be our little secret! So uh…" He looked around the drab shack. "Should we head back to the manor to do it? This hardly seems like the place to-"

"No. We are absolutely NOT doing it at the manor. I don't want to risk one of the servants or, worse yet, our parents catching us." She pointed to the trapdoor beneath their feet. "I've a makeshift bed set up down there we can use. Let's…let's just get this over quickly."

Nodding, the pair traveled down the trapdoor and entered the underground playground Yoruichi and Kisuke used to use. The pair found the sleeping area she spoke up, a simple large mat with a pillow and a blanket. Seeing Yushiro's expecting eyes, Yoruichi sighed and reached for her outfit.

A blush spread across Yoruichi's cheeks as she pulled down her leotard and exposed herself to her little brother. Nobody would ever doubt that Yoruichi was a beautiful woman and in the nude she looked like she'd been carved from stone by a master sculptor. Her breasts were large and firm, capped by small nipples. Thanks to her training she had developed abs over her smooth, toned belly. Her naked legs just never seemed to end, leading up to her wide thighs. Yoruichi blushed harder at the heated gaze Yushiro gave her and covered her pussy, a small triangle of purple hair above her dark lips. She turned to the side but that simply gave Yushiro the opportunity to ogle her glorious ass.

Sighing, Yoruichi turned back to her brother. "Alright, Yushiro, let's get this over with."

Snapping out of his ogling, Yushiro nodded and took off his vest. Yoruichi couldn't help but chuckle as her brother undressed. Yushiro's effeminate look was only compounded by his small chest and thin frame. 'Okay, next time we race, I'm going to go all out and make him dress in drag for this.' She thought to herself before Yushiro pulled his pants and underwear down.

Then Yoruichi looked down and stood there in stunned silence. Her eyes went as wide as they could and her jaw hung low. 'What…the…fuck?!' She stared in shock and awe at Yushiro's massive erection. She'd expected her brother's dick to be as small as he was. The woman had no idea her brother was packing something that huge in his pants. 'Well…I guess we now know where all his testosterone went when he reached puberty.'

Yushiro's erection heavily contrasted his feminine looks and body. Yoruichi didn't know that her brother was so hung. 'Sheesh, Ichigo would be putting his smaller Zangetsu blade away with shame.'

Stroking himself, the horny Yushiro, aroused at the sight of his naked sister, stepped closer. "Um…if we're going to do this…can you suck me off first?"

Staring at the throbbing log between her younger brother's legs, Yoruichi swallowed the lump in her throat. Just staring at such a massive cock made her body want to tremble. 'It's the poison. I still have a little bit of Quincy poison in me,' Yoruichi told herself. 'I wouldn't feel so apprehensive at such a…such a beast if I were completely healthy.' Knowing she couldn't back out of this, the Flash Goddess walked over to her nude brother and knelt down in front of him. Her hand reached out and gripped his shaft. 'Good lord, I can't even wrap my whole hand around it. How did he keep this hidden?'

"Ohhhh…" sighed the young man while the woman in front of him slowly moved her hand back and forth. Despite her prowess in hand to hand combat, her hand was surprisingly soft, gliding across his thick, veiny shaft. His head titled back while he enjoyed the pleasure of his sister jerking him off.

Eyeing his thick, bulbous tip, Yoruichi started to pant as it stared her in the face. Looking up at her panting, moaning brother, Yoruichi hesitantly opened her mouth and leaned forward. A shiver ran down her spine as the tip passed her lips, entering her wet orifice. Her lips closed around the head and the taste of cock hit her tongue.

"Ahhh! Yoruichi…" moaned Yushiro some more. Yoruichi's tongue licked the thick tip, feeling a bead of pre-cum coat her tongue with its flavor. Mentally ignoring the incestuous taste of her own brother, Yoruichi bobbed her head back and forth. She took him deeper and deeper into her throat with each slide. Her tongue was flattened by his insane girth, making her gag as she took him as deep as she could. She'd been with men before and was well versed in the seductive art of cock-gobbling but Yushiro was in a class all his own.

"Gckkk!" gagged the cock-stuffed Yoruichi. Saliva dripped down her throat, spilling onto her naked breasts and making them glisten in the artificial sunlight of the playground.

The feeling of Yoruichi's mouth sucking his cock, the tightness of her throat while she took him deep, the wet tongue that ran along the underside of his meaty shaft. Yushiro was in paradise. He undid the tie to his sister's ponytail. The beautiful woman's purple hair spilled down to her shoulders and back. "Yoruichi! Ohhhhh!" He put his hands on Yoruichi's head, his fingers threading through her silky locks. "Don't stop! Ohhh! Don't stop!"

Before she knew it, Yushiro started to take control of the situation and began to fuck Yoruichi's face. "GCKKK! GLCKKKK!" gagged the helpless sister while she choked on the young man's cock. 'Fuck! He's too big…can't…breath!'

Feeling his sister push back against his thighs in protest, Yushiro realized that he was choking his older sister and finally let go of her head. Yoruichi pulled away from the huge erection she'd been stuffing her face with and coughed up some air. "Fuck! Yushiro! Don't do that!" she warned threateningly, glaring up at her older brother. "You damn near made me suffocate!"

"Sorry, Sis. It's just…that felt so good…" Yushiro gave his best apology, harder to do when you're stiff as a board, and scratched the back of his head. "Maybe you could…use your breasts next?"

"Fine…" Cupping her large melons, Yoruichi leaned back forward and wedged the thick slab of cock between them. "Damn! I never knew you were so big…" she muttered. Her chest heated up when her breasts began to move up and down, getting off the young Shihoin with her luscious breasts. At first she simply continued on giving him a Paizuri, content with watching Yushiro's face contort with pleasure, his hands going to her shoulders to steady herself.

Yet as second after second ticked by, Yoruichi could feel herself start to feel heat begin to build inside of her. Before she knew it her mouth had opened up again, her tongue rolling out to lick at the saliva-covered head. "Mmmmh…"

"Nghhh…" Yoruichi's face tensed. His grip on Yoruichi's shoulders tightened. His large balls tightened up as they readied to blow their load. "Yoruichi! I'm…" Feeling the cock in her tits start to throb and the head she was licking beginning to pulse, Yoruichi tried to move her face away but Yushiro held her still with a grip she didn't even know her brother had. "I'm cumming!" His cry of ecstasy echoed throughout the underground playground. That heated, furious rush swelling within him surged through his long shaft until it reached his tip. Yoruichi was caught off guard and was blasted by ropes of white cum, staining her dark skin with her brother's seed. Yushiro held her still while he continued to paint her breasts and her face white. Some of it even got into Yoruichi's mouth, forcing her to swallow her brother's cum.

As soon as the deluge of her brother's essence had subsided, Yoruichi immediately pulled away and gagged. "Arghh! Yushiro! That's disgusting!" She grabbed the nearby blanket and cleaned herself up. The taste of her brother's cum in her mouth was not something she wanted to know.

"I-I'm sorry, Sis…" weakly apologized Yushiro, realizing just how mad his sister was for giving her a bukkake.

"Here's a tip: don't cum in a girl's mouth. Especially your big sister!" Seething with annoyance, Yoruichi tossed the soiled blanket to the side. "After blowing a load like that though, I imagine you're…finished…"

Her hopes that Yushiro's incestuous lust had faded were dashed when she saw her younger brother was still as hard as ever. With the happiest of smiles, Yushiro stroked his cock, slickened with Yoruichi's saliva, and stared at her gorgeous body. "So…can we do it next?"

Gulping, Yoruichi took a deep breath and nodded. She REALLY hoped that Kisuke didn't have any recording devices installed nearby otherwise she'd never live this down. "Okay. I'll…I'll let you fuck me," she started, much to her brother's delight. "BUT!" She pointed a finger at the lady-killer her brother was sporting. "Do not cum in me! This isn't a safe day. So when you have to cum, pull out and cum on my ass!" Turning around, she got on all fours and looked back at her brother. "I do NOT want to explain to the elders how you got me pregnant."

Nodding, Yushiro got behind Yoruichi and knelt down. "Don't worry. I promise I won't cum you inside you, Sis."

"You better not. Otherwise you're in for such a thrashing…" Yoruichi mumbled. When hands touched her ass to spread her cheeks she tensed up, fearful of what was about to happen. Not just that she was about to have sex with her brother, but her brother just might seem to be the biggest man she'd ever lain with in her entire life.

When the thick, round tip of Yushiro's manhood nuzzled against the lips of Yoruichi's honeypot, Yushiro smiled when he found how wet she was. "Wow, you must've really like giving me a paizuri, Sis."

Yoruichi mentally cursed. She'd gotten so caught up sucking Yushiro's cock and getting him off with her tits she'd overlooked that it'd made her extremely horny. "Just…just put it in already!" she demanded. The Flash Goddess wanted nothing more than to get this over with.

Hands gripped her waist. Yoruichi's breath hitched when she felt the head push against her folds. Her pussy easily gave in and accepted Yushiro's cock, sucking him into her most private of places. Even though Yushiro went slow, Yoruichi wanted to howl. "Fuck…" she grunted, feeling that thick meatrod slide into her.

"Wow…you're…so tight, Sis!" grunted Yushiro, pushing his cock into her until he bottomed out her pussy.

Feeling her pussy stretched wide all the way to the folds, Yoruichi struggled to keep herself upright. The fact that she'd chosen to have sex doggy-style was a blessing since it meant Yushiro couldn't see her expression. 'Fuck! Fuckfuckfuck! FUCK! HE'S SO FUCKING HUGE!' Her fingers dug into the mat beneath them while she struggled to contain herself. She was going to be sore tomorrow. That much was for sure. 'Who wouldn't be tight when you've got a cock that big?!'

Yushiro thought Yoruichi's mouth was heavenly but here, shoving his cock deep into her honeypot, was the epitome of bliss. After a moment, he began to move, slowly pumping his rigid manhood in and out of her soft pussy. "Ohhh…" he breathed, moving his hips in a slow, steady rhythm. "You feel amazing, Yoruichi…" he slurred.

"Guh! Nghh!" Yoruichi grunted with every thrust into her womanhood. 'Ohh…he's so big! I...I feel like I might break!' Looking down between her legs, Yoruichi watched as that large manhood pumped in and out of her pussy, her greedy cunt sucking him back in. The sight was enough to make her blush, feeling the heat in her loins began to spread. "Nghh!" Her eyes squeezed shut and she bit her lip. 'I should be disgusted. It feels like he's going to split me in half. He's my brother. And yet…' Throwing her head back, Yoruichi let out a deep moan. 'Fuck! He's hitting every damn spot inside me!'

Listening to his sister moan while fucking her emboldened Yushiro. Smiling, the young brother gripped her hips tighter and began to quicken his pace. A dirty sound echoed throughout the area, ringing in both of their ears. The siblings blushed as they listened to the fapping sound of skin slapping skin. Yushiro's hips slapped Yoruichi's glorious, phat ass with each pump into her pussy. The sound of their bodies coming together in the most carnal of acts burned into their ears. It would be a sound neither sibling would forget anytime soon.

Yoruichi clamped a hand over her mouth. She didn't want Yushiro to hear her moaning. To let her brother know she was actually feeling pleasure from this would only spur him to hear more. The idea of her own brother bringing her climax was horrifying to her. Yet for all her disgust, the pleasure that was coursing through her veins as her pussy was being reshaped by Yushiro's manhood was beginning to swell, overtaking the shame and disgust. This was certainly not the "two pumps and a dump" she had been expecting earlier.

But Yushiro was not going to have it. He wanted Yoruichi to enjoy this just as much as he was. Pressing himself into her back, the horny brother's hands left her waist and found Yoruichi's swaying breasts. Yoruichi arched her back when those small hands of her brother's groped her dark-skinned globes. His thumbs brushed against her nipples, sensitive and hard. "Mmmmh!" groaned Yoruichi when those fingers of Yushiro's pinched her hard nipples. Her body began to start shaking. Yushiro seemed to be trying as hard as he could to make his older sister succumb to his lust.

The constant fucking soon got to Yoruichi. Her arms started to tremble, her body shaking as Yushiro quickened his pace. Her arms finally gave out and she fell onto the mat, her ass sticking up. "Ahh! Fuck!" she finally cried out.

Even though he was having the time of his life ravishing his sister's cunt, Yushiro didn't want to accidentally hurt Yoruichi by fucking her into the ground. With what willpower he had left, he stopped his rampant thrusts and slowly pulled out of his sister's honeypot. For a brief moment, Yoruichi hoped that her brother was near climax and had pulled out to blow his steaming hot load on her ass.

Sadly that hope faded when Yushiro laid down next to her on the mat and rolled her onto her side. Her back pushed into his sweaty chest. She turned her head to see his smiling face, the horny brother ran his hands along the woman's beautiful body, finding body her to be softer than he imagined.

His hand found her leg and lifted it up. Yoruichi gave another gasp as that monstrous cock slipped back inside of her. Thanks to the new angle, Yushiro could reach spots Yoruichi didn't even know she had. "Ahh! Ah! Ahh!" the siblings moaned in unison with each thrust. Yoruichi's head began to fog up again. By now the pain of her pussy being stretched to its limit had passed. Now there was only the pleasure that assailed her mind and body. 'He's fucking me so deep!' Her nails dug into the mat beneath her while she continued to struggle against the pleasure slamming in and out of her. 'If he goes any deeper into me, he's going to fuck me right through my womb!'

Continuing to thrust into his sister's cunt faster and faster, Yushiro reached up and turned Yoruichi's head. The sight of her debauched face panting for breath turned him on like nothing ever had before. Not caring what Yoruichi might say, the young man pressed his lips against hers, sealing their carnality with a deep kiss.

Locking lips with her own brother should have disgusted Yoruichi. But with Yushiro balls deep inside her, taming her cunt while her body slowly begin to crave more, she could do nothing but melt into the kiss. Her hand reached up behind her head to run through Yushiro's short, purple hair. As they made out, the kiss became sloppy. Soon their tongues became involved and met with equal passion as their loins. Though she wasn't aware of it and wouldn't admit it even if she did, her body began to rock in time with Yushiro's strong thrusts, slowly bending to her brother. Yoruichi had no idea her brother could be such a good kisser. When the kiss ended and they parted she licked her brother's lips with her hungry tongue. Emboldened by her growing submission, Yushiro opened his mouth and wrapped his lips around her hot pink tongue, sucking it tenderly. "Mmmmmh!" the two siblings moaned into each other's mouths.

The hot fog of passion clouded Yoruichi's mind. She knew this was wrong but it felt so good. A deep, shameless part of her wanted to beg Yushiro to fuck her harder, to tell him that she was so close to orgasm and that she wanted him to make her cum with his huge cock.

'No. I can't…' Yoruichi told herself, beating down that part of herself with what resistance she still had. 'If I cum now…I think I'll completely lose it. And Yushiro will just take that as a sign to keep fucking me silly.' Pulling her tongue away from her brother's mouth, Yoruichi turned her head away, only to moan when Yushiro started to drag his tongue up the side of her neck, tasting her sweaty skin. 'How is this happening? The best fuck I've ever had in my entire life! And it's my own little brother!'

His side feeling sore from their position, Yushiro once again slowed his hips to a stop. "Hey, uh…Sis?"

"What is it?" Yoruichi asked, panting for breath. Her body was so hot and sweaty it was practically glued to Yushiro's own sweaty chest. "If you're going to ask to fuck my ass the answer is a hard no. I don't have lube and not even Orihime could fix what you'd do to my asshole. I'd be limping for a year."

"No, no. Nothing like that," started Yushiro, although he was a little disappointed his sister wouldn't let him take her on a ride into the danger zone. "Could you ride me?"

Regaining her composure, Yoruichi turned her head and raised an eyebrow accusingly at him. "Oh what? Are you getting tired of doing all the work?"

"Well, it's just…you're so sexy I wanted to see you in motion."

A groan slipped out of Yoruichi's mouth when her pussy was emptied for a second time, Yushiro's cock leaving her pussy gaping from its rampant assault. Knowing she couldn't turn him down, the naked Flash Goddess sat up and sighed. "Fine." While her brother lay down on his back Yoruichi climbed on top of him, straddling his waist. Looking down, she once again felt a wave of intimidation as she stared at the huge girth aimed at her pussy. It was one thing for her to lay there and take it. It was another to actively fuck herself with it.

Seeing her brother watch her with excited eyes, Yoruichi took hold of his throbbing shaft and lowered her hips. "Ah! Nghhh!" Her body tensed as the head slipped back inside of her, albeit this time it didn't hurt as bad as before. She sank all the way down his manhood until she felt it bump the back of her pussy, the tip knocking at the door to her womb. Taking deep breaths, Yoruichi put her hands on her brother's smooth, flat belly and began to move her hips. "Ah!"

"Ohhhhh!" Yushiro's head tilted back while he enjoyed his sister's cunt sliding around his cock, squeezing him ever so tightly. He'd always fantasized about what it'd be like to finally become one with his sister but this was better than any late-night fantasy. "Don't stop! You feel amazing, Sis!"

"Mmmmh!" Yoruichi bit down on her lower lip and tried to move slowly. If she lost control of her hips and let her body take the reins she would climax for sure. Her ass rippled as it crashed down onto Yushiro's hips.

Fap! Fap! Fap! Fap! Fap! Fap! Fap!

Sweat rolled down Yoruichi's back. She tried to pace herself to keep her movements in check but a brother's lust couldn't be denied. Yushiro's hands found her waist and her younger brother began to bounce her faster. "Ah! Yushiro!" she called out. Just like that the restraint she'd been holding on to failed her and her hips moved faster and harder. "Nghhhh!" Yoruichi's eyes started to glaze over as her pussy slid up and down rapidly. It wasn't that Yushiro was hitting her G-spot. It was more that Yushiro was hitting every spot inside her honeypot. She felt like her body was going to explode. "Ahh! Ah! Oh!" Her composure broke apart. Her face couldn't hide to Yushiro how good she was feeling.

With every slide down Yushiro's cock, Yoruichi's breasts bounced. With her rapidly increasing tempo, her ample bosom started to recklessly bounce all over the place, hypnotizing the young man beneath her with their enchanting rhythm. His small hands let go of Yoruichi's waist, leaving her to bounce at her own frantic pace, to once again grope her bouncing tits.

"So big…" breathed Yushiro. His fingers sunk into Yoruichi's soft melons, squeezing them roughly. Unbeknownst to Yushiro, Yoruichi's breasts were actually one of her biggest weaknesses. A fact that he was unknowingly exploiting.

Moaning out of control, Yoruichi joined her hands with Yushiro's in fondling her chest. A perverted smile stretched across her face as she brought Yushiro's' fingers to her nipples. Getting the picture, Yushiro grinned and pinched her dark nipples, earning a cry of pure lewdness from the woman. "Does that feel good, Sis?"

"Yes!" Yoruichi cried out shamelessly, losing herself to the lust within. "Do it more!" Her breath hitched when Yushiro continued to pinch and tease her nipples. "Nghhh! Yessss!" She leaned back while her brother pinched her tits, stretching out her breasts to their limit. Her chest felt like it was on fire and yet Yoruichi didn't want him to stop. Her mind has sunk so low into the swamp of depravity that there was no stopping her.

Yushiro was loving every bit of this. The sounds Yoruichi made and her face contorted with pleasure. The way she threw her head back and howled in ecstasy when he pinched her tits as hard as he could. Every time he did, he felt her womanhood tighten around him, choking his cock and threatening to never let go of him. "You're so tight!" he grunted. He let go her nipples and instead grabbed two meaty handfuls of melon. "Are you about to cum?"

"Don't…be…stupid!" groaned Yoruichi, lying through her teeth. "As if you…could make…me…" Yet even as she said the lie, her body revealed the truth in all its splendor. The pleasure that had been building in her loins all at once spread throughout her entire body. Lightning lanced through her naked form from the tips of her toes to the top of her head. Despite her best efforts, Yoruichi had lost the fight with herself. Her brother was making her cum. "Cumming! Oh fuck! Fuckfuckfuckfuckfuck! Ohhhhhh!"

Yoruichi's head rolled back. Her hips moved as fast as they could until her body was suddenly thrown through the doors of unrivaled ecstasy. She let out a cry that could be heard throughout the entire underground playground. While her brother watched beneath her, staring at the face she made in orgasm, her pussy squirted around the massive cock that was plugging her insides. Yushiro's lap became soaked with her silvery love juices. "Fuuuuuck…" slurred the woman, rolling her hips to feel her brother's manly erection shift inside her.

As Yoruichi had feared, seeing his sister have a mindblowing orgasm flipped Yushiro's switch. He wanted to see her make that face again, to make her body his. And the best part?

Yoruichi would gladly give it to him now.

Sitting up while Yoruichi slumped backwards, panting and sweating like a whore on dollar night, Yushiro wrapped his arms around her and embraced her. Yoruichi wrapped her arms around his shoulders, hugging him tightly when he leaned in for another kiss. Her breasts pushed into his sweaty chest, digging her nipples into his soft skin. Whereas the previous kiss had been clumsy, this one was pure, unadulterated passion. Yoruichi melted into her brother's lips, letting his passion for her take control. Her legs wrapped around his waist. "Oh! Yushiro!" Yoruichi panted when they broke for air. Cupping her brother's face, Yoruichi smashed their lips together in another deep kiss. Her tongue plunged into her brother's mouth, entangling with his. She continued rolling her hips, moaning deeply as she felt Yushiro's clamhammer shift around inside of her.

Feeling her breasts continue to press into him, Yushiro cupped her large puppies and pushed them up. "Ohhhhh…" went the Flash Goddess when her brother's hot tongue started to lick her aching nipples. "Nghh!" Her hips started to move again to fuck herself with Yushiro's cock when teeth began to nipple her sensitive tit. She ran her nails along the young man's back, urging him on with her subtle touch that stoked the flame inside of him.

Eager to fuck his sister into oblivion after watching her orgasm, Yushiro wrapped his arms around Yoruichi and rolled over, laying the beautiful, sweat-covered woman onto her back. Pulling his lips away from hers, a string of saliva connecting them still, Yushiro slowly pulled his cock out of her cunt. He watched with lustful awe as Yoruichi's twisted, her pussy emptied until only the head still remained inside of her.

"AH!" Yoruichi let out a lewd howl when Yushiro slammed back into her. With such brute force that belied his small, feminine frame, Yushiro began to fuck his sister as hard as he could. His manhood slammed in and out of her cunt, now completely tamed by his size and girth. "Yoruichi! Yoruichi!" the young man kept chanting, over and over again, like Yoruichi's name had suddenly became his mantra. His embrace tightened while he kept thrusting as hard as his hips could muster. He didn't care if his hip bones broke when this was over. Fucking his beautiful sister and watching her orgasm in front of his eyes again would be reward enough. "Does it feel good?" he asked, knowing the answer.

"Yes!" Yoruichi dug her heels into Yushiro's back. Her arms squeezed his chest while she clung to him. No other part of her body mattered save for her pussy being ramrodded. "Fuck me!" she begged, looking at her brother with glazed, passionate eyes that demanded more. "Fuck me, Yushiro!"

Giving his sister another lewd, tongue-filled kiss, Yushiro happily obliged. The sound of skin slapping skin intensified, Yoruichi's pussy making dirty sounds while Yushiro's cock plunged in and out of it. "Yoruichi…" breathed the younger brother. Her walls kept tightening around him with each plunge. With her breasts rubbing into his chest, fingers running all along his back and neck, ankles digging into the small of his back to plead for more and eyes starting at him with rampant lust, Yoruichi was the epitome of temptation.

'Fuck! It feels like he's prying open my cervix!' thought Yoruichi, feeling that thick head of Yushiro's slam against the back of her pussy like a jackhammer. It hurt to have her pussy violated in such a way but it hurt so good. In her mind's eye she imagined her cervix being penetrated by Yushiro's thick manhood. The idea of her own brother fucking her straight into her womb made her blush even harder.

Yushiro noticed how Yoruichi was growing louder with her lewd moans, her hole clamping down around him. "Y-Yoruichi!" he grunted, his hips moving well beyond even his control now. "Are you going to cum again?"

This time Yorucihi could not deny the fact. Instead she embraced it. "Yes! Make me cum! Oh fuck!"

Fap! Fap! Fap! Fap! Fap! Fap! Fap! Fap! Fap!

"Fuuuuuuuck!" The heels digging into his back dug harder and the moans grew louder.

Fap! Fap! Fap! Fap! Fap! Fap! Fap! Fap! Fap!

Sweat rolled down her burning hot body. The heat in her loins was overwhelming. "Ah! Yushiro! Yushiro! Ohhhhh!" Her eyes rolled into the back of her head when Yushiro began to move even faster.

Fap! Fap! Fap! Fap! Fap! Fap! Fap! Fap! Fap! Fap! Fap! Fap! Fap! Fap! Fap!

The pleasure was too much for her. Yoruichi saw stars just before her body tensed up. "Nghhhhh!" Her lips opened up to form a soundless scream as she was pushed over the edge. As she reached the throes of climax, Yoruichi pulled her brother in for a bruising kiss. Yushiro swallowed her orgasmic scream while she squirted even harder this time, her pussy choking Yushiro's cock. Yet even as her pussy tightened and squirted away, Yushiro's hips refused to stop. His rampant fucking prolonged Yoruichi's orgasm, filling her head with nothing but lewdness.

Slipping down from her high after several minutes, Yoruichi felt weakened by her second climax. Her arms and legs slowly let go of Yushiro, falling to the mat and letting him fuck her limp body. "Sis! Sis!" Pushing his arms up so his upper half hovered over Yoruichi, Yushiro's face showed his whittling resistance. The fact that he managed to go this long without blowing his load was a miracle in and of itself. But enduring Yoruichi's heavenly pussy tighten around his thick girth twice was too much for one young man to take. Watching his sister become the quintessence of debauchery beneath him was the icing on the very delicious cake.

All control was lost. Squeezing his eyes shut, Yushiro pounded his sister as hard as his body could muster. "Sis! I can't…I can't hold it in, anymore!" he finally grunted. His sac began swelling up and a tingling sensation ran down his spine. "I'm gonna cum!"

Those three words were enough to snap Yoruichi out of her cock fucked stupor. "Huh?" She blinked and the haze of lust cleared away. As soon as she saw Yushiro's face, she knew he was about to cum. And he was still balls deep inside her fertile cunt. "Wait! Not inside!" she pleaded. She tried to move her arms and legs to push him off, to get his cock out of her, but her body failed her when she needed it most.

"Cumming! Yoruichi!" Slamming his cock into her, the tip pushing right into her cervix, Yushiro threw his head back and embraced the ecstasy within him. "CUMMING!"

A hot wetness filled Yoruichi's pussy. The Flash Goddess froze up when she felt her pussy flowing with her brother's sperm. Yushrio already showed off his massive orgasm before when she got him off with her mouth and her tits. Now his manhood was buried inside her warm pussy, giving it a deluge of white hot cum. "Ahhh!" cried out Yoruichi. She was disgusted by what her brother had done but the feeling of her womb being flooded with cum almost made her want to cum a third time. Almost.

Yushrio didn't move, continuing to hover over his sister while he filled her honeypot to the brim with his young man-milk. Soon Yoruichi's cunt couldn't contain it all and it started to leak out from her stuffed pussy, mixing with the juices that stained the mat beneath them.

For the longest minute of their lives, the siblings remained silent. Sweat pouring down his body, dripping onto his limp, dazed sister, Yushiro pulled out of the Flash Goddess, a small stream of cum spilling out of her. "Sis…that was…so amazing…" he panted. The sex had been so intense he felt like his heart might give out. "I…I love-"

BONK!

One swift blow to the head later and the head of the Shihoin Clan dropped to the ground like a sack of potatoes. "Oww…" groaned Yushiro, a large lump starting to swell on the top of his head, joining the bump on his forehead. When he looked up, he didn't see his sister, the fiery, beautiful Flash Goddess. He saw a naked, sweaty woman with cum dripping down her legs, looking at him with a look only a scorned woman could give.

And you know the saying about scorned women.

"You…stupid…incestuous…IDIOT!" she roared. "I told you not to cum inside me!" The feeling of her pussy, hot with her brother's seed, only intensified her anger. "Today was not a safe day for me! That's why you should have pulled out!"

"I'm…I'm sorry, Sisi!" Naked and afraid of his angry sister, Yushiro assumed a mournful position and bowed his head. "It's just…you felt so good! I couldn't help myself! I'm so sorry!" He looked up and tears started falling from his eyes. He knew how bad this would be if he really did get her sister pregnant. His family would never live down the shame.

"What part of 'Not inside' don't you understand? I don't want to have a baby! Least of all with you!"

Despite her anger, Yoruichi softened a little when she saw her brother start to cry. She put a hand over her face and groaned. True, Yushiro was to blame for cumming inside of her but there was no doubt that she earned some blame in this whole mess. After all, she was the one who not only made the silly wager for that race. And despite her reservations she still agreed to have sex with her brother. Had she not given herself over to lust within, she might have been able to push her brother off of her and make him cum on her belly or tits instead of inside of her. "It's alright. This is my fault too…" she finally said.

Sitting down next to him, she pulled her brother into a hug, patting his head. "I should not have let it get this far. I know you love me, Yushiro, maybe a little too much," she said, tilting her brother's head up and wiping the tears from his eyes. "But you're going to have to rein it in. Not just for my sake, but for the sake of the Shihoin Clan. Get dressed and return to the manor. If anyone asks you were you were, you were just checking up on me. That's not a lie."

"But Sis! What if-"

"We…" She put a finger to the boy's lips, cutting him off. "…are never going to talk about this again. Do you understand me?" Yushiro nodded his head furiously. "Good. Let's just forget this ever happened. Don't talk, just go. You hear me?"

Continuing nodding his head, Yushiro got up and dressed himself as quick as he can. Turning around, he bowed in both gratitude and apology. "Thank you, Sis. And…sorry…" Before he could earn another scolding, he headed for the ladder and scrambled up it to get out of the underground playground.

Sighing, the tired, fucked royally Yoruichi got up and scowled when she got a good look at the sleeping mat. "Gonna need to replace this before Kisuke starts asking questions. The last thing I need is for him to rag on me about this. I'd never hear the end of it." She made a mental note to check the place for any surveillance bugs Kisuke might have set up. If Kisuke had recordings of what just transpired then he'd have blackmail material for life.

Deciding that this was a matter for later, the Flash Goddess tiredly shambled over to the hot springs for a much needed soak. She hoped that with luck she could put this day behind her and forget all about it, save for giving her brother a scolding the next time they were alone.

Several months, a few mornings of vomiting and one frantic pregnancy test later, however, told the unfortunate Yoruichi Shihoin that there would be no forgetting today.

The End