Chapter 1 - Codex Astartes' Cocksleeve

"By order of Uralon, you serve me now," Iblis stated confidently. They paid no heed to the fact they stood barely hip height to the fallen angels of the Emperor, simply planting their hands firmly on their hips and staring up at the four post-humans in front of them.

Marazhai sat behind them at a distance, ready to watch all of this play out. Iblis themself seemed oblivious how the air around them changed with their words, and he couldn't help but smirk.

"What was that?" the largest of the space marines asked in a tone that demanded immediate recanting of the Rogue Trader's statement.

In turn, they merely huffed, "Are you deaf, Astartes? You are under my command now."

Immediately, one of the marines moved to grab their throat, lifting them up before they could react.

"What do you say, brothers?" he looked at his fellows, "do we need to teach this one a lesson?"

"Read my mind," two of them replied in unison- all four were now unhooking their loin cloths, metal codpieces falling away with a clatter. Iblis could only choke and gasp through the suffocating hand around their neck as four massive cocks were revealed, each the length of their torso and almost its width as well, pulsing even while flaccid and with wicked looking ridges down their deep red lengths.
While three of the four began to jerk themselves to erectness, the one holding Iblis put a hand around their waist to hold them up, the other hand around their throat moving to their pussy. 

The sound of begging and pleading tore from Iblis's throat, but they were ignored in favor of a few brief rough strokes of their clit before shoving a single thick finger in their cunt, eliciting a scream.

"Are you a virgin?" one of the marines sneered, eyeing the finger inside them. 

They were barely coherent, replying a mumbled "yes" before devolving into babbling.

Another of their number simply laughed, "Certainly a way to break a normal mortal in, having its first time be with an Astartes."

"Four Astartes," the one holding them corrected when he slipped another finger inside them, earning another round of gurgling from Iblis, whose eyes were rolled back in their sockets already.

"Will Uralon be mad if we break it?"

"He'd understand. If they break we can just make the thing into a breeding sow, that way they'll still serve Chaos."
Each of the marines nodded, and huddled together around the Rogue Trader. With the tips of their dicks barely kissing their cunt, it was apparent they would be a tight fit, but they hadn't been in the mood for gentleness from the start. 

On a signal, the marine still gripping Iblis's waist brought their frail body down on the quartet of cocks, and he felt them go limp in his hand- it was lights out for them when each marine was only halfway in.

Even at only half their lengths, however, there was a grotesque bulge in their stomach. The pale skin of their abdomen was comically distended, and the ridges of each of the members inside them was prominent against their pale flesh, and the sight was enough to give the group of Astartes new vigor. A battle roar resounded as they pulled their prize further down on their titanic pricks, and with some effort, the Rogue Trader was fully skewered, suspended entirely by the lengths inside them while they were slumped over and drooling. They were utterly fit to bursting, the impressions against their flesh now pushing up past their sternum and beginning to balloon with excessively leaking precum, and the Astartes roared with glee.

"Wake up, bitch!" one of them shouted as they slapped Iblis. The force made some of the pre filling them slop onto the floor, and they looked around dazed momentarily before their eyes went to their grotesquely distorted stomach, and they let out a loud howl.
"Release me! Release me at once, this is improper conduct with a Rogue Trader, not-"

"You're our property until we're done with you," they were quickly rebuked, "and you'd better get used to being our cocksleeve."

"Marazhai-" Iblis remembered their companion who was still watching, and desperately looked over to where he was sitting to make their appeal, but he simply smirked, twirling a blade.

"You went out of line, my pet. I'm happy to see you be given the opportunity to learn your place, maybe you'll even learn to be more obedient in the future."

Their gaze shifted from him back to the Astartes, who somehow seemed to leer from their masks with the approval of Marazhai.

"Is that your owner, pet?" one sneered.

"If he gave us permission, that means we shouldn't hold back, right boys?"
With all in agreement except the one assailed by unreasonable amounts of cock, the space marines quickly found themselves grabbing Iblis's waist once more and slowly lifted them off their dicks, watched how the pink flesh of their vagina sucked tightly against their lengths as they were lifted off. The moment they were fully free of their pricks they let out a low whine, a sense of hollowness in their gut settling with the removal of their intruders, before they seized at another intrusion into their cunt. Thekr jaw fell slack and they felt their legs weakly kick and twitch when four space marine fingers were sharply shoved into them. All they could do is gurgle as he continued to fit his hand deeper in, but despite valiant efforts failed to include his thumb.

"The whore is still far too tight by far," he spoke with a mocking tone of pity, and his brothers clamored in agreement.

"Don't worry," another stroked their cheek with sickening sweetness, "we'll fix that for you."

All Iblis could do was let out a choked shriek in response, and once more they found themself being stretched open on three feet of space marine prick- their walls clenched in protest, scraping against the ridges of their massive meat, and before they even slipped a quarter of the way down they hoarsely whispered, "Please, you'll- you'll tear me open, won't fit-"

"Cocksleeves shouldn't be speaking," their hair was yanked sharply, and they let out a soft moan. Quite suddenly, they couldn't help themself- their cunt was gripping so tightly and sensations so overwhelming, heat was gathering in their gut, tightening like a knot, and they let out a shriek as they threw their head back and let their body twitch and buck in pleasure throes. 

Squirt sprayed from their nethers, and without hesitation the Astartes laughed, "Thanks for the extra lube, slut."

With Iblis now barely keeping themself conscious, each time they were dragged up and down space marine meat their body was wracked with twitches and moans, shuddering and making a whiney noise each time they once again found their cunt empty- before shrieking in both surprise and pleasure as their womb was stretched to impossible limits once more, their gut continuing to distend with absurd amounts of pre that slopped onto the floor in filthy puddles with each movement.

They could not count how much time had passed or how many thrusts they had been subjected to. The Astartes stamina seemed endless, content with reaming out their hole until they no longer could, and while Iblis continued to think they were at their limit and there was no more they could take, it kept going. They stopped trying to count the number of times they had cum, and their legs were entirely numb at this point even as they still reacted with each orgasm that wracked their body, kicking and flailing as the sensations electrified their spine and overwhelmed them. At this point their stomach looked like they had a small watermelon inside them each time the marines withdrew, and they could feel the progressive loosening of their holes when each time they were plunged into was met with a little less resistance.

"Too much," they whined, "can't take it anymore," and they earned a sharp strike to their face for it.

"If you can still speak you haven't hit your limit, slut."

"We're gonna use you 'til you break, got it?" another snapped, yanking their hair back until they were looking at him through glowing eyes of his helmet.

When they didn't respond they were struck once more, letting out a little wail.

"Come on, bitch, repeat after me. 'I am the Word Bearers hole and nothing more'."

"No, n-no, I am not, I am the Rogue Trader and I-"

Before they could finish their statement they were forced a further few inches down the space marine's cocks, once more seizing as their synapses were overwhelmed and their body stretched to accomodate far more than it reasonably should. 
"Do we need to keep proving you're our filthy hole we're going to ruin?" one of the Astartes sneered, and all they could do was drool, arms futilely wrapping around their egregious stomach bulge.

"How cute, looks like the little mortal bitch wants to stroke our cocks, how nice and obedient."

"The little sow still has yet to profess it's undying loyalty to Word Bearer dick, though, doesn't it, brothers?" 
The quartet nodding in unison, and one grabbed Iblis's nipple and pulled roughly, drawing their attention back with a shriek.

"Come on, little mortal, we need your full attention for your lesson in why you should be honored to be fucked by us."

They could only gasp fearfully in response, their hands going to their pussy and accidentally gripping one of the many dicks inside them as though they could stop it sliding in, only to have their wrist grabbed and yanked behind their head.

"No, no," the marine grabbing them crooned, "no resisting, cocksleeve. Pay attention."

With barely a warning, they were fucked the roughest they'd been since the debauchery began. Heady musk filled the air as they were thrust into at a pace that would put the most virile mortal male to shame, and with each pump into their cunt  they felt it give more and more to the Astartes animalistic rutting. It only took a few moments for them to be overwhelmed with pleasure, and they were distantly aware they were screaming as they cum once, twice, three times in a row. By then they thought they were done with, all the energy drained from them and them going completely limp, but post-human stamina continued to carelessly abuse their hole. It was truly like being treated like an object, as none of the marines seemed to even notice they were no longer moving- even so, their cunt continued to squeeze their dicks like a vise, and so it went on.

Iblis only thought to even try to process things once more when they noticed the pace of their thrusts slowing, and they desperately hoped it was over. Their battered pussy was screaming for relief, and they were about to speak when suddenly they felt a pulsing sensation against their walls, eliciting a choked "No-" that died in their throat.

"Oh yes, little broodmare- we're going to breed you like the bitch you are."
"We're going to wreck your womb so bad the only thing you'll be able to think of for the rest of your puny little life is Word Bearer cock," another breathed in their ear, voice heady and soft pants punctuating his statement.
Each of the Word Bearers had slowed to only slow gyrations, and each one was breathing laboredly as Iblis could feel the throbbing inside them. With a mighty roar, the first of them came, and the second followed suit, with the other two taking just a moment longer to bust- Iblis themself let out a howl as they felt themself stretched to their limit and filled beyond what they thought possible. Wave after throbbing wave of hot Astartes cum flooded their bruised womb, inflating it grotesquely, and the seal of the cocks against their cervix didn't let a single drop free. When they looked down they went slack-jawed in shock, staring at the damage, and when they opened their mouth to ask if it was over, the marines thrusted just a bit deeper all at once, each grunting heavily, and continued with their second wind.
At this point coherent thoughts could no longer form in Iblis's mind, which was only capable of bouncing between jolts of pleasure that had their body twitching and eyes rolled back in their head, and the sensation of feeling impossibly full. Static filled their ears, and they were completely limp when they were pulled out of, the absence of cocks stuffing them allowing jizz to flood out of them before they were dropped to the ground unceremoniously, landing face down in a puddle of cum while their leaking cunt continued to spill onto the floor.

One of the Astartes huffed with exertion while he stared at the soggy mess of cum on the floor. Their ass was raised high in the air, pushed up to accomodate their grotesquely swollen cum gut lifting them off the ground, their face was coated in a filthy mask of fluids, and their cunt was gaping absurdly, wide enough to accomodate three space marine fists with ease.

"Battle-brothers, I feel like we are not quite done with the mortal bitch, what do you say?"

"Its cunt is used up, though. We broke it," one Word Bearer pouted.

A clap on the back made him stumble, and his battle-brothers laughed uproariously, "Fear not, brother, it was gifted with another hole for us!"
With that, two of them stepped forward, one lifting Iblis by their hips and the other by their shoulders, limbs dangling comically as they tried to fit around their grossly distended stomach.

"Look, brother," he whispered as he wiggled his thumb into the tight ring of their ass and pulled it wide, "even tighter than its pussy."

A shriek poured from Iblis's lips, and they shook their head, hoarsely shouting "No!" over and over, interspersed with "not my ass too," and "please!"

Iblis was discussed like no more than a piece of meat between them while their cries went unheard, and another thumb slipped into their unused hole, both sides now stretched wide enough to accomodate half an Astartes cock.

"Too tight," the marine at their front chimed in, "I shall take their throat hole while you three use their ass."

"A wonderful idea, brother!"

Iblis whined again, reaching up with leaden limbs to try and hit at the wrists of the marine gripping them, but he simply moved a hand to tightly grab their hair, yanking it back.

"Shut up, bitch," he snarled, "I see you still haven't learned your lesson in why you should be honored for this, begging for our dicks. I will let them show you, leave your whore throat free so you can sing your praises of us before I stuff it full."

"We will be gentle, human bitch," a voice from behind them laughed, and they felt hands scrape the inside of their oversensitive cunt in a way that made them shriek and jerk, before something thick and sticky was rubbed around their asshole- cum.

"Lube the little cocksleeve up so it does not tear, yes?" 

The battle-brothers nodded in unison.
"Prepare yourself, bitch!" one of them cried, and their pulled-wide hole was quickly and roughly violated. Iblis's vision went white for a moment before a strike came to their asscheek.

"Come on, whore! Loosen up!" he roared, "I can only get my tip in at this rate!"

"Fear not, brother, we will loosen its hole together!"

As expected, Iblis's pleas again went unheard- before they could speak much more than a "no", another cock shoved into them, and then another, three sets of hands all pulling their ass wide in unison to force them to fit the impossible. Their body reacted on its own, shivering in pleasure and squirting down the legs of the Astartes inside them. 

"Please..." they mumbled, and the Word Bearer at their front lifted them by their hair.

"What was that, bitch?"

"Please, more cock- I want to be your cocksleeve- make me your hole," they moaned. Finally, the abuse had completely destroyed their faculties past thinking about pleasure, and their desperate desire to be broken open.

"Why didn't you say so, bitch?" he laughed, and pulled their head back further- this time lining up their slackened jaw with his cock while his battle-brothers took the chance to try and work deeper into their ass.

"Tell me how much you want it, slut."

"Please give it to me," they wailed, and they stretched out their tongue to lap precum from his tip.

"My wish is your command, hole."
With no ceremony, he plunged his dick deep into their throat, and he laughed as they snorted cum and their eyes rolled back, body going limp once more while their throat bulged comically around his cock. With their stomach so grotesquely pregnant with cum, he could not see how his dick stretched them out, but he could more than feel how deep inside them he was, and more than that he could feel their cute little throat squeeze him in a way that sent tingles of pleasure up his spine. Even as they were throwing up foamy cum around his cock and it leaked from their nostrils, their choking and gagging squeezed his throat almost better than their pussy could, convulsing muscle making him almost want to just stay like this to let them massage his cock with their unwilling esophagus.

He pulled out, however, no longer spearing them on his dick, and lowered himself to look them in the eye. "Tell me bitch, do you worship Word Bearer dick yet?"

"I- I 'orship W'Bearer dihh-" they could barely speak, their stretched out throat meaning they could barely make their lips meet and every time they tried to say a word cum began to dribble from their mouth.

"Good, good, it's okay now. Good holes don't need to speak, cocksleeve."

They nodded in response, a brainless, lustful expression telling him they barely understood what he just said, and he took the chance to plunge back into their throat.

"The little broodmare is loosening up for us, brother- are you done with your games so we can begin to fuck it in earnest?"

"Of course, brothers- use the bitch up as you desire!"

Cheers resounded when the three waiting space marines were given their cue to fuck their new broodbitch as brutally as possible. Waiting with just their tips throbbing inside their new cocksleeve was a nightmare exercise in patience that made their thrusts all the more violent in the end, carelessly shoving inside the Rogue Trader so forcefully that cum exploded out of their stuffed-full cunt, and the broodbitch themself was letting out shrieking little mounts around four feet of of spce marine prick, trying to thrash as their body was wracked with pleasure but too fucked-out to even move.

Finally, the first marine managed to get himself balls deep into their ass, the tip of his dick pressing up against their sternum, and his brothers followed suit, each letting out a roar of approval, and the cock occupying their throat bottomed out as well, burying their nose in his bush and slapping his softball sized nuts against their chin.

"Has the bitch blacked out?" one asked, noting the lack of moans.
A strike to their face elicited no response, and the quartet laughed viciously. 

"Completely and totally gone- you think we broke its brain?"

"One can only hope, let's use it up before it comes to!"

All in agreement, they began thrusting once more, each never quite pulling out as more and more cum leaked around the seal of their dicks, and their walls clenched instinctively against the meat-poles filling them to burst. Bright red bruising bloomed on their ass and chin from the force of the thrusts they endured, and one Astartes commented during a slowing of their pace, "You think it will be able to walk after this?"

"I hope not!" was the only acceptable response, and their holes were wrecked with even more zeal, hoping to see them become incapable of being anything but the Word Bearers little cumrag.

It was so long for them to finally be ready to burst that Iblis regained little flickers of awareness in that time, feeling their body used and abused far beyond its limits, the deep pleasure of them being stretched open brutally overwhelming their brain to the degree they could only think of the dick inside them and how they wanted more-
The Astartes at their front noticed their flickering gaze and pulled out, freeing his throbbing cock while he waited for them to vomit a few gallons of cum that had been stuffed into them.

"Tell me bitch, what are you thinking?"
"It doesn't matter what it thinks! It belongs to us!" one of his battle brothers chimed in, but he raised a finger to silence him.

"No, I want to hear what it has to say for itself. I give you permission to speak, Astartes cocksleeve."

They looked up at him, expression vacant and mouth drooling cum, and spoke around cum-soaked lips, "More... breed me p- please," they moaned suddenly as they felt the ridges of the dicks inside them scrape their walls, "fill me up like the h- hole I am," they whined.

"You heard it, didn't you? The new cocksleeve took to its role quickly, didn't it!"

Once more cheering, the space marines began to jerk themself to completion using their cocksleeve's holes, rough and short strokes to feel its walls really clench, and as tbeir cocks began to pulse and throb with the promise of a payload, squirt once more sprayed from their fucktoy's ruined cunt even as they remained near unconscious.

Each Astarts rooted themself to their base inside Iblis, grunting and heaving and near doubling over their breeding bitch's frail body while they released their second load of the evening, each of them animalistic and unceremonial in their movements while they gripped Iblis's flesh so hard it bruised. Their stomach swelled even further with a heaping deposit of jizz that eventually could not be contained by their meager human organs and was spit up from their mouth and expelled by their ass, leaking around the enormous cocks plugging them up.
After the Astartes' several minute orgasm completed, Iblis simply slid off their softening dicks to the ground, letting out soft little moans even in between their continuous vomiting of cum.

One Word Bearer reached down, tangling his fist in their excessively sticky hair, and dragged their head up- right to his cock, which was still covere in fluid.

"Come on, bitch, at least finish cleaning up," he sneered, and mashed their face against his member until they began to lap at his dick with little resistance. Too fucked out to even close their mouth, they slobbered more than cleaned, but the marines simply leered excitedly at the stupid mortal bitch who they had made into their brainless knob-polisher. Abusing them quickly became a game, if they moved too slow simply grabbing their face and smearing it across their sticky cocks until their face was plastered with tacky film was a favorite, right after slapping them with their dicks to see if they would react(the answer was yes- by automatically trying to suck on their cocks like the obedient cocksleeve they were). It took them embarassingly long to satisfactorily clean even one space marine cock, and by the end they had to be pulled off it, being the stupid brainless slut they were they couldn't help themself trying to suck and stroke it, but another messy dick quickly replaced the one they'd finished polishing, and after a gruelingly long wait they would find themself slumped over in a veritable pool of jizz with each of the Word Bearers haphazardly stuffing their lengths back into their codpieces, each one not even offering their slut a passing glance as they walked off.
"We'll be seeing you, bitch! Especially if you start pumping out a bunch of Chaos bastards, we'd love to have you back!" one called to them, followed by another gleefully chiming in, "Hopefully you'll be better at taking cock next time!"

The words barely registered to Iblis themself, who was simply periodically whining at the feeling of emptiness in their holes and periodically reaching down to try and finger themself, continuously confused when their slender hands couldn't even begin to match the degree to which they'd been stretched out.

Marazhai had continued to watch the whole time, too insignificant to be noticed by the Word Bearers and with Iblis too busy being destroyed by dick, he had melted into the background. Himself, though, his own t-dick was sending sparks of heat up his spine every time he moved, grinding against his codpiece. Watching his pet be so utterly humiliated and destroyed was a once-in-a-lifetime experience- unless of course, he could figure out how to get them in proximity of a pack of space marines again. Food for thought that he mused on as he stepped gingerly around pools of body fluid to Iblis.

Their dark eyes were glazed over, and they could only moan as Marazhai grabbed them cruelly under the chin, turning their face back and forth to observe how badly the brains had been fucked out of them.

"Learned your lesson, did you, pet?" he sneered, and earned another moan in response.

After a moment's consideration, he traced his hand down their swollen stomach, reaching for their still-leaking cunt. Normally, he'd have to consider the risk of clawing them with his gauntlets on, but this time his hand slipped in without resistance-  even splaying his fingers he did not quite manage to touch their walls, and he couldn't help the guffaw as he raked his knuckles along their twitching innards, taking joy in the chorus of strangled shrieks and moans that came from them.

"Those mon-keigh really did ruin you, huh? I'll have to see what I can do if I ever want to satisfactorily fill you up again- or if you can even walk after being so thoroughly run through. What a used up little whore you are, pet," he smiled saccharinely at them, giving their pussy one more brush of his clawed fingertips before withdrawing his hand, now coated with cum.

"Filthy," he tutted, and his other hand released their chin to try and wipe himself off. Iblis took the opportunity to try and wriggle into his arms, leaning forward against him, but Marazhai grabbed their shoulder and shoved roughly, sending them face down into the filthy jizz-soaked floors while the impact forced more of the stuff filling them out.

"Who said you could touch me, filth?" he snapped, "clean up your disgusting little mess that you were too pathetic to keep inside yourself, then I'll consider letting you near me again."

Naturally, being the obedient pet he had made them into, honourable Rogue Trader Iblis von Valancius pressed their face into the floor and did as they were told. It was an impossible amount of jizz to clean up, with them barely able to move with their gut packed to bursting and their legs entirely numb, but they valiantly dragged themself forward, scraping up globs of thick baby batter with their tongue even ss their leaking cunt and ass trailed behind them, only adding to the mess. Slowly, their mind barely coherent and body half immobile, they vested themself in the important task of drinking space marine cum, savoring its smell and taste as they buried their face in it. 

Marazhai was right to think of them as a brainless slut, he thought as he watched them, so earnestly smearing cum across their entire body and slurping up gallons of the stuff completely instinctually. After a while, he noticed their movements slow, and he bade himself stay back and continue to observe, only for them to suddenly vomit a good half of what they cleaned up and pass out in the pool underneath them.

“Filthy,” he repeated, sneering at their slack-jawed, fucked stupid face and tongue lolling out of their mouth. The dumb slut couldn’t even close their eyes, rolled back in their head, and he strolled over to their prone form.

“Get up, cumrag,” he sneered, kicking them sharply in the stomach to a chorus of squelches and gagging that nearly drowned out their sharp shrieking while they vomited even more cum and their other holes gushed the stuff. With them more jizz than mortal at this point, he crouched down and tangled his hand in their hair, yanking their head back. 

“Did I say you could stop?”

“N- o- I’ll do better master,” they breathed.

“Good,” he replied coolly, and dropped their head back into the puddle of cum he had pulled it out of, upon which they began obediently lapping at it even as they could not move the rest of their body.

Marazhai stepped away from the pile of fluid and debauchery, sitting back to watch once more. Who knew how long it’d take them to clean their mess? He was ready for a long night.
