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Birthing Vow

Summary:

“Bear my children.”

Megumi could have shouted, if Sukuna didn’t have a mouth trained onto his own. Wide eyes met Sukuna’s, the curse still bracketing Megumi’s body easily with his own. “Bear my children, and you may live.” he repeated, the palm pressed to Megumi’s lips licking at his open mouth wetly. 

Notes:

So Panda made a tweet about "megumi getting nonconned by Sukuna penis tentacles and his poor uterus getting so inescapably pregnant from it that he cries" and it lit a fire under my ass for reasons unknown!

This is highly indulgent and viciously horny. Please be aware there is a lot of humiliation for Megumi over being trans, but no specific misgendering from Sukuna. Basically ALL of the bad pussy words are used to refer to his pussy, also.

(See the end of the work for more notes.)

Work Text:

Megumi woke up unable to move. He was having a night terror, probably; It was a common enough occurrence for him to be conscious but paralyzed, unable to escape from a gnawing sense of terror. He kept his eyes stubbornly shut, lest the feeling of fear bleed into his vision. Hallucinations of terrible monsters, curses;he tried counting, tried to see if he could move a finger or a toe—he noticed he could move both, and that he was outside his covers. His bed felt...wrong. His room was too breezy. Was he still dreaming?

Megumi opened his eyes to see the blood red of a temple roof.

Jolting, he was stopped short by rope restraining him to a stone dais. Was he moved in his sleep? No, he was a light sleeper, being moved would wake him—Domain expansion? It could take him from his dorm room into whatever curse’s domain easily but, why had Megumi been unconscious? What curse had come for him in the Jujutsu academy’s dormitory, where it was certain to be noticed? 

When awoken from a night terror, there was often an unspeakable creature right in the corner of Megumi’s vision, taunting before it attacked. Just because this wasn’t a dream did not mean Megumi shouldn’t have thought to look behind himself. 

“Good morning, Megumi.”

Megumi shook. From the corner of his eye appeared a looming figure—four eyes opened wide and trained on him. A hand large enough to engulf his skull gripped Megumi’s chin and tilted his gaze upward to Sukuna’s tattooed face. 

“Fushiguro Megumi,” the demon said, as if savoring the taste. Two hands cupped Megumi’s head from chin to crown— he’s going to crush my skull like this he’s going to —as another palm cupped one of Megumi’s bound wrists. That was three; the shock that Sukuna had regrown his four arms cut off Megumi’s morbid thoughts.

“I’d like you and I to make a deal.”

If Sukuna had been able to drag Megumi into his Domain, every technique the King of Curses attempted would hit. If Sukuna was able to alter his host’s body so easily right before expanding his domain…when had he won over Itadori? Megumi tried frantically to grasp at a meaning, an explanation. How many fingers was too many for Itadori to absorb? He couldn’t remember what the last one Itadori consumed was. Four, five? Had it been earlier? And there was this: what could Sukuna want out of him if he had already defeated the person truly in his way?

“And why would I do that?” Megumi glared, tempting Sukuna’s ire. 

Sukuna laughed, fanged mouth wide. “Why, indeed?” his hands slid down, down to rest cupping Megumi’s throat with a squeeze. The pressure was threatening. Megumi’s pulse skyrocketed, forgetting Sukuna’s hand around Megumi’s bound one until a snap reverberated through the air; Megumi screamed.

“I’ve been told living is a pretty good motivation,” Sukuna whispered with glee, releasing Megumi’s broken middle and forefinger; snapped like twigs. “But I could make that agony for you as well, Megumi-chan.”

Gritting his teeth to not make another agonized sound, Megumi’s watering eyes were bloodshot. The implication was to belittle him, surely but it also could mean something else; something worse. A sudden cold sweat waved over him as Megumi processed the underlying threat.

“No,” Megumi said, an afterthought. 

“Yes,” Sukuna hissed, gaze narrowing. “Always knew you were one to watch, with your shadow technique...but who knew that through the brat’s senses I’d learn something even more interesting?” 

Megumi gasped, suddenly released and able to take full breath as Sukuna walked around him. “At first, it was subtle things about you like a smell, or the way you sat…” A clawed hand pressed at Megumi’s waist, keeping him from kicking up or squirming “...The shape of your hips when you walked.”

The gasping hadn’t stopped, Megumi felt tight in his skin with panic, confusion, fear—he couldn’t breathe. Sukuna stepped up onto the dais, standing tall above him, always smiling. “You know what confirmed it? Your blood.” Megumi shut his eyes to the shine of Sukuna’s fangs mocking him, mocking what he was, “The blood of your womb on rubbish he hardly glanced at. Never mind that no women resided with you, that it was not upon the gauze of a wound, that it was yours.”

“I could smell it.” breath gusted so close, Megumi startled, jostling his injured hand with a stifled cry. Sukuna was mere centimeters away, face dark as he crouched over him, caging Megumi in. Megumi turned his head, it was even harder to breathe with a curse so close—“ Nnn— ?!”

One of Sukuna’s massive palms grabbed Megumi’s groin hard enough to jolt his whole body upward. “Your fertile. little. quim.” 

No, it wasn’t something—Megumi couldn’t handle speaking about it in private with friends . It was something his family avoided, something he’d take with him to death if he could help it. Megumi was a Jujutsu sorcerer, not confused, or a freak, or a woman , he was—he wasn’t breathing. Spots danced in his vision, black then white; his eyelids felt heavy, body shivering warm as they started to droop.

“Tsk,” Sukuna clicked his tongue, placing a palm on Megumi’s mouth. It grew a mouth of its own, connecting to his gasping lips and breathing out deeply. “You aren’t leaving, breathe child.”

Air flowed into Megumi in a steady rhythm, and with it a treacherous relief. His body was fighting his will, needing oxygen more than its freedom from Sukuna. Sukuna who knew this body’s secrets.

Relief was short lived. “Bear my children.”

Megumi could have shouted, if Sukuna didn’t have a mouth trained onto his own. Wide eyes met Sukuna’s, the curse still bracketing Megumi’s body easily with his own. “Bear my children, and you may live.” he repeated, the palm pressed to Megumi’s lips licking at his open mouth wetly. 

Megumi closed his mouth tightly, writhed against his bonds as they dug further into his skin. It made Sukuna click his tongue again, eyes blazing each time Megumi flinched in pain. 

“You’d forfeit your own life to say no?” Sukuna said, sounding almost impressed. Sukuna’s free hand curled under his chin, rubbing the curse’s jaw. “What about Itadori Yuji’s life?”

Megumi cursed. Beneath Sukuna’s hand it was muffled nonsense; it seemed to amuse him as his palm licked at Megumi again until he shook and glared. Sukuna scoffed, “Predictable. I chalk it up to youth, thinking this brat has more value than you do.”

Removing his hand from Megumi, Sukuna settled back, full weight on Megumi’s legs to keep him down. Megumi tried to wipe his wet mouth off on his shoulder. “You—you tried to kill Itadori before and he survived, why should I believe you could manage it now?”

Sukuna watched his mouth form the words. His smile returned as an unwelcome guest; the King of Curses let out a loud laugh. His amusement carved a pit into Megumi’s stomach. 

“I let him live, boy, have no doubt about that.” 

Megumi was stricken. So all this time, Sukuna had been in control anyway? Muscular bulk shifting, Megumi’s legs were freed from Sukuna’s weight as he shifted his body swiftly. “What are you—.”

“How about this: if you cum, I can impregnate you.” Sukuna interrupted, not a question. 

Megumi glanced down to see his knees being spread and started thrashing. “AS IF I’D—!” Sukuna covered his mouth, shutting him up by force. Ignoring Megumi kicking at his back and legs, Sukuna grabbed the collar of Megumi’s sleep shirt and ripped the fabric away as he struggled. His chest had no scarring; his development stalled before anything truly developed. He dared Sukuna to call attention to it, to sneer at his undesirable muscle, to let him go in disgust.

The King of Curses instead focused his black eyes onto Megumi’s stomach. He had been grazed on a mission, hardly anything serious; but with Megumi’s complexion, bruises came easy. A blooming oval of purple and red sat beside his belly button, the corners fading to a greenish-yellow as it healed. Megumi’s struggling faltered as Sukuna brushed the skin.

“You bruise so prettily,” Sukuna muttered, leaning away to examine him. Megumi felt himself sweat, “It’s almost a shame.”

Their eyes locked as Sukuna brought a fist down against Megumi’s midsection. Megumi spat, a pained noise escaping with his air as the hit made him gag and cough. He knew Sukuna could break through his flesh with one hit, that this was a pulled punch: even with the knowledge Megumi was breathless. “That will be the last of those for a bit…” Sukuna said matter-of-factly, using the stunning hit to tear off the rest of Megumi’s clothes.

Megumi was bare, and gasping as Sukuna settled over him fully—the hand silencing him grew a pair of lips that nipped at Megumi’s with sharp teeth, taking advantage of his open mouth to probe in with tongue. The tongue was inhuman, too warm and so large it was uncomfortable for Megumi’s jaw; a pleading noise escaped from within Megumi’s chest. 

Sukuna shushed him, petting Megumi’s thigh like a startled animal. Sukuna trailed his actual tongue across Megumi’s collarbone up to his neck. He seemed fascinated by the thin skin over Megumi’s jugular, sucking and biting it with his teeth. Each bruising nip reminded Megumi how easily Sukuna could tear him apart beyond repair—how he wanted to get him pregnant —Megumi bit down on the tongue filling his mouth, arching away. 

“Mm, that’s it.” Sukuna said almost purring, licking a trail over his pounding heart. “Don’t give in too soon, little one.”

Megumi shuddered; Sukuna’s enjoyment seemed guaranteed no matter his attempts. As his mouth was gratefully freed from Sukuna’s accursed tongue, the curse’s actual mouth bit down on Megumi’s chest. The pain wasn’t as jarring as was the delight in Sukuna’s sudden “Oh?” as Megumi’s gaze flew down to those same teeth grinning down at his nipple. 

“Look at that,” he whispered, bringing a hand to the pink flesh, claws indenting the puffy areola. “You even resist here, hmm?” Sukuna asked, as Megumi held stock still, hoping the curse didn’t decide to maim his inverted nipples. His long nails scraped a circle around the tender flesh before Sukuna used two fingers to stretch Megumi’s nipple apart. “Ah, the tip is within! How like a little cunt these are.” Sukuna mocked, stretching Megumi’s areola enough for him to let out a whimper.

The sound made Sukuna pause, moving his hand to replace it with his mouth, wide and sucking at Megumi’s nipple with his tongue. It wasn’t good, it hurt strangely, in a ticklish way Megumi thought— and when Sukuna’s teeth brushed against the flesh, Megumi’s stomach trembled and ached, expecting worse pain. Sukuna finally pulled his mouth away when Megumi made a panicked sound, feeling Sukuna’s fangs closing down on the sensitive flesh. His eyes were watchful, dark, looking at Megumi’s now red nipple sticking out against his pale skin.

“There we go,” he said, all teeth. Sukuna removed the hand covering Megumi’s mouth, trailing it down to the other side of his chest. The disembodied mouth there latched onto his nipple the same way Sukuna did moments before, and Megumi lost his breath, flinching. Another hand came to his more abused, swollen nipple to flick the bud meanly, pinching the tip between fingertips and tugging. Megumi didn’t—he doesn’t think of his chest, because he’s a man. This focus Sukuna had on it was driving him crazy; but even with his mouth freed he didn’t dare to let out the vile words he was trapping in his throat. Megumi was biting his lip so hard he tasted blood, as two of Sukuna’s hands seemed to have mouths for licking and biting his tender nipples, as the main mouth lavished attention on the aching bruises now littering his stomach and claws trailed threateningly against the delicate skin of his hips and thighs. Sukuna watched his face; Megumi refused to look, but he could feel it as he stifled every sound and reaction he could. It felt like he’d have lost to Sukuna, to give him the reactions he so obviously savored.

Using all four of his arms, Sukuna grabbed Megumi’s legs by his ankles and thighs, planting his face between Megumi’s legs; wasting no time, Sukuna licked directly at Megumi’s slit. 

Hah--?! ” Megumi squeaked. 

Sukuna replied “Mmm,” mouth on Megumi’s pussy. It felt like the curse was kissing him there, lips puckered and tongue at a normal human length as he licked and sucked at Megumi’s labia. Megumi was frozen in shock. His legs were completely immobilized, arms useless, his chest sore and damp; Megumi shivered all over and couldn’t stop. “ Why— stop that, right now,”

Sukuna looked up at him from between his legs. His chin was slick, glistening in the light. “Y’know,” he drawled, licking his teeth, “You’re already soaked, Megumi. Been looking forward to it, huh?” 

“I—that can’t...be true.” Megumi shook his head, wincing when Sukuna dragged a hand from his thigh to grope his backside, bringing his crotch closer to the curse’s mouth. Megumi watched Sukuna watch his thighs shake. “You...you can’t do this.”

“Oh, but I can,” he replied, taking a deep breath of Megumi’s sex before sitting up. “I could do this to you,” Sukuna came closer; the evidence of Megumi’s body’s betrayal was suddenly stark and obvious, to his growing dread. “Whenever I wanted. Wherever I wanted,” Megumi gasped as Sukuna rubbed his large palm against Megumi’s vulva, calloused skin rubbing his clit harshly. “You wouldn’t even have to be awake. Or alive ,” Sukuna finished with an amused threat. He licked Megumi’s bleeding bottom lip. Megumi tried to show the disgust on his face, but he knew his eyes were watering. 

“But wouldn’t that be a waste, Fushiguro Megumi?” 

Sukuna’s mouth was on his when Megumi felt the first tears fall. His tongue slipped in when Megumi had no choice but to sob, or maybe gasp as the hand grinding against him opened its own mouth to lick at his pussy with enthusiasm. He let Sukuna violate his mouth, crying out inside, trying to stop thinking, to be brave. Megumi felt like he might die. His monstrous tongue thrust itself so deep into Megumi’s throat he gagged, and Sukuna pulled away looking punch drunk. 

“You taste delicious, Megumi.” he said, emphasizing his words with his lower mouth probing at Megumi’s slit, wiggling deeper, in. “Your little sex was made to be fucked.” 

Megumi tensed and shook—he didn’t want it inside, not there! It would hurt and tear and bleed, his chest heaved. Sukuna’s gaze stayed as he rotated a thumb over Megumi’s clit, which was too much as another pathetic noise escaped him.

 “Are you close, little one?” Sukuna asked with fake sympathy, petting Megumi’s tear streaked cheek at the same time as his devious tongue wriggled between his labia. “It’s okay, go on now…”

Between the monstrous saliva and Megumi’s own slick, Sukuna’s tongue probed inside. Megumi felt it slip in, prodding at the sensitive flesh in his pussy as he felt himself begin to shout; clawed thumb rubbing his clit mechanically and those eyes watching him.

“Nnn—no—!” Megumi begged, as his cunt clenched down on Sukuna’s tongue involuntarily; his body twitched once, twice, warmth spreading from his groin as Megumi suddenly fell limp.

“You do break so prettily, Megumi.” Sukuna said.

He sounded far away to Megumi, as his mind warred with his body. He knew, physically, that Sukuna’s unnatural tongue still poked and pried within him, that the King of Curses was above him kneeling between his legs, watching. Knowing didn’t make him feel anything, for a blissful few moments of afterglow.

Sukuna began to disrobe, four arms flexing outward as his chest was bared. His tattoos swirled in Megumi’s watery vision, taking his gaze lower, lower still to the apex of the curse’s hips to see his kimono barely covering his cock. A prominent vein seemed to throb as Sukuna’s monstrous member stood proud, long enough to brush the top of his obi, and so thick Megumi doubted he could fit a hand around it. His testicles were large, animalistic nestled against wiry pubic hair. Megumi’s stomach dropped out.

“No.” Megumi said, shaking his head, his whole body. “Kill me first. It won’t...it won’t work.”

Megumi didn’t have to look at his face to hear Sukuna’s grin. “It’ll fit, little one. I’ve fit into smaller holes than yours.” 

Megumi didn’t doubt that, what he doubted was if those on the receiving end of such torture survived. As he tried to squirm away, Megumi watched in horror as the member of the King of Curses split itself perfectly in two, growing in unison into two distinct penises before both wiggled and writhed: prehensile. The width of the flesh seemed to undulate at will, the only constant being the slightly pointed, flared head with its angry red flesh. Megumi haltedly clenched his thighs closed, shaking his head harder.

“Hah, don’t worry I’ll keep it to one. Your backside is too much of a hassle to break in now,” Sukuna chuckled, forcing Megumi’s thighs apart once more as the flesh knit itself back together to become one, wriggling nightmare. The swollen head leaked a fat glob of precum that splattered onto Megumi’s skin and it felt like a bucket of cold water. Sukuna was getting closer, between his legs, and he was huge, and Megumi couldn’t move—!

No! No, nonono, I’ll die, you’ll kill me—!”

“Tsk,” Sukuna clicked his tongue as he wrapped a hand around Megumi’s neck, cutting off his airways entirely this time. “You are being foolish. I won’t kill you: that is my vow.” 

Megumi struggled in earnest, feeling his wrists bleed against the ropes, feeling Sukuna’s claws dig wounds into his thighs, bashing his head hard against the stone he rested atop. He was dizzy with the strain of no air, flooded with adrenaline and on fire all over. Sukuna watched him impassively, scolding. Like strangling Megumi was to douse a child’s tantrum. “If you agree to my terms, you will not come to harm...and I will spare Itadori Yuji’s life.”

Thinking of Itadori felt like a slap across the face; Megumi thought Sukuna knew it. His grip eased, Megumi took a barely allowed breath. “You must know what I’ll do if you do not let me, you’re not stupid. I will kill you both, and rule this world once again...I still can, little one.” Sukuna was on him now, whispering his venom into Megumi’s ear as Megumi felt blood vessels popping under his skin, straining for air. “It’s a courtesy that I’m giving you an option. You, with your jujutsu...you’re special, Megumi.”

Megumi began to cough, his throat raw as Sukuna released it from his chokehold. Tutting, Sukuna procured a gourd and brought it to Megumi’s lips—he was too far gone to refuse it; sloppily swallowing the sweet water, trying not to choke. Sukuna pet Megumi’s sweaty hair with the same hand that held his throat. “You are not going to die. Agree to my terms.” 

Megumi looked at Sukuna’s face. So much of Itadori remained; Megumi would probably never know what the true face of the King of Curses was besides nearly-Itadori. Itadori, but stronger; Itadori, but darker. Four eyes of the strongest curse in existence stared at him through the vessel of his friend and offered to let him live; there was only so selfish Megumi could be. 

“I accept,” he said, closing his eyes to Sukuna’s growing smile. 

A moment later, searing hot flesh nudged at Megumi’s slit. “Good boy,” the curse purred into his ear, Sukuna’s cock rubbing it’s engorged, leaking head against Megumi from clit to taint; slicking him up further. He couldn’t help tensing, the fear never quite escaping Megumi. He felt Sukuna lick at his cheek, tongue following the trail of a tear he didn’t remember shedding as the tip of his monster cock pressed inside of him. Megumi whimpered.

Sukuna hushed him, lower limbs holding his waist while the others reached up to Megumi’s hands, unbinding the rope. There was no escaping now despite this. His arms were still so sore, so Megumi kept them limp as he squirmed beneath Sukuna’s solid muscle, feeling himself be slowly penetrated. The stretch was uncomfortable, edging so close to pain it made Megumi wince. The curse kissed and licked at Megumi’s shoulder, rough hands roaming his chest gently, but nothing distracted him from the thing squirming inside. After a minute, Megumi cried out as the shaft entering him seemed endless, pressing against his sensitive walls with a sudden stabbing pain. 

“It’s too much,” he sobbed. Sukuna didn’t listen.

Megumi was sweating with exertion, lowering his arms to try and push himself up into a sitting position. He watched where the curse was penetrating him with open horror. “It’s only— halfway—?! Hghh! ” Megumi suddenly yelped, body seizing as Sukuna drew him down to meet his pelvis with a sudden motion. Sukuna gasped out a groan, deep voice cracking. Megumi throbbed, surely Sukuna had torn him in two with so much stuffed inside him; it hurt as his pussy dripped and clenched between his legs. 

“Hah, see? It fits, Megumi-chan.” Sukuna said, cruelly. “After all, you are made to bear children.” 

There was no respite for Megumi: Sukuna began to move his hips. Each stroke out seemed to rub Megumi raw, each thrust in punching out a sob. It was surely ruining his insides permanently, the wet squelching sounds of every movement lubrication from blood and viscera. The pain was a dull throbbing, refusing to fade as Megumi felt more lucid as Sukuna violated him, adjusting. He dared to look down, expecting the worst but he still jumped to see a bulging under his skin above where Sukuna entered him. He seemed to be waiting for Megumi to look, grabbing one of his injured wrists and pressing it down onto the swelling. “Feel me, Megumi. I’m so far inside you…”

Megumi felt Sukuna twitch within him, felt it through his hand pressing and his cunt clamping down on the mobile intrusion. Tears were racing down his cheeks again, as he felt it—felt Sukuna’s cock squirm in him, the way it had before. It punched an embarrassingly high sound out of his throat, which seemed to please Sukuna as he grabbed Megumi by the hair to shove their mouths together. Megumi was jostled forward by his tugging, needing to grasp Sukuna’s tattooed shoulders as he was forced to straddle the curse’s thighs. It wasn’t much of a kiss with Megumi still and wincing; but Sukuna kept thrusting his hips while his cock wriggled inside Megumi’s abused hole and it made him yelp, and whimper, and cry which meant Sukuna could suck on his little red tongue.

A steady stream of “Uh—Uh—Ah—.” pushed out of Megumi’s lungs, like his body had no place to hold anything that wasn’t Sukuna anymore. Even his mind felt empty; after struggling for so long so hard, having given in had drained Megumi’s fight. All that was left was the fear, the fear of pain and of—of what came instead of pain. 

“So fucking wet, Megumi.” Sukuna said, mouth resting against Megumi’s neck, other mouths roaming and licking with his hands, grabbing the meat of his ass, the peaks of his nipples. “Do you hear it? All that fuss and your body loves it,”

Megumi bit his lip angrily. It was wet because of Sukuna! His spit drooling all over Megumi’s sex, his grotesque dick leaking like a faucet—and blood, from Sukuna’s violent penetration. He glanced warily at where they were connected, lower than his distended stomach full of the monster above him and clenched his hands into fists. When he looked, when he paid attention to it, his lower body was soaking with clear fluid. No blood, no gore that he was so afraid of; Megumi gasped as a new fear grew in him. 

Sukuna shifted him again, placing him on his back again while gripping the bottom of Megumi’s thighs. He brought them high, high up until Megumi’s knees hovered near his head and his stomach folded up. “You’re being so good, Megumi,” Sukuna smiled, pushing his hips in a deep grind against him. The angle made Sukuna reach deeper inside of him, Megumi throbbed. The thrusting, waving motions Sukuna’s cock made in him were so vivid, making it unable to ignore the way Sukuna was violating him. It was wrong, the filthy way the curse’s bulk shifted and thrust so fast, rough, his sack spanking against Megumi with each movement until he was sure his ass was as red as the finger shaped bruises on his windpipe. 

“Nooo,” Megumi cried, unintentionally whining as Sukuna reached a hand between them to touch where they connected. 

Sukuna grinned, fingers stroking and probing at Megumi’s stretched labia almost curiously. “No? When we’re so far in, you say no?” A clawed finger wiggled against Megumi’s slit, like Sukuna wanted to put even more in Megumi. With a strangled cry, Megumi grabbed Sukuna’s wrist and shook his head, again. 

“It—it can’t fit anymore, please, please,” he begged. 

Sukuna merely laughed at him, leaning down to nip at his mouth. He removed the digit; Megumi sighed in relief, though Sukuna’s pistoning hips began their torment again. He was afraid, Megumi automatically opening his mouth for Sukuna’s tongue to slip in, swallowing the spit he drooled into Megumi like a rabid dog. It was scary, when the sob from Megumi’s throat felt almost warm as Sukuna’s free hand toyed with his clit. Megumi was so afraid of slipping beneath this monster; he was scared it would feel good.

Something was reaching an apex, as Sukuna’s grip on Megumi tightened, as his cock seemed to move more and more, alarmingly. Megumi wanted to slow it down, sure it would bruise his insides but Sukuna’s tongue was so far into his throat his pleading came out a gurgling. The fingers rubbing his nub sped, Sukuna letting go of his legs to grab Megumi’s waist and leaning away; his tongue dragging behind in Megumi’s poor mouth until it was released from his gagging trachea with a pop. 

Megumi scrambled—Sukuna knelt up with his hips still in tow, lifting him waist-up from the stone as Megumi tried to balance without his head hitting on each thrust. His form rippled, muscles tense as Sukuna worked Megumi over him like a toy; precise and inhumanly strong, it was a terrifying sight. 

Megumi didn’t even realize he was making noise until Sukuna responded to him, “Yeah, keep crying just like that, fuck , good, I’ll reward you,”

“S-stop, stop it’s too fast—!” Megumi sobbed, anxiety building with this new pace, this new angle. I’m scared, it feels good, I’m scared—it feels good—! 

“Gonna kiss right against your womb, Megumi, I’ll fuck my seed right into it,” Sukuna licked his lips, using Megumi, using him for his own pleasure.

“Imagine the power we’ll create...If only I had been trapped inside you instead of that brat to begin with,” without warning, he thrust two of his thick fingers between Megumi’s lips, claws scraping as Megumi tasted blood. “Hah, just like that,”

Swallowing his own blood, Megumi came. He spasmed, full body against the stone and unable to move away from the constant fuck fuck fuck of Sukuna’s hips against his sensitive cunt as it tensed and leaked, tossing his mind into complete disarray. He heard a high keening before he knew it was coming from him, pathetically loud and nasally as he was stuffed full from both ends. Sniffing, Megumi met the curse’s narrowed gaze and begged around his fingers: “Sknnha,”

Sukuna’s mouth sharpened into a grin, a grimace, claws digging into Megumi as he brought their hips flush violently. 

“Take—it—.” Sukuna panted; Megumi’s eye’s bulged as the lower half of his body jostled at the impact of Sukuna’s cock stiffening, straightening all its length out and throbbing, which must have meant he was—Megumi wailed around his fingers. He was sensitive from orgasm, feeling as each pulse of the cock stabbing into him sprayed out its seed, painting Megumi’s insides.

Megumi pounded his fists against Sukuna’s chest, kicked his legs against his back—Sukuna watching with a smile of utmost pleasure as he spent in Megumi’s cunt. It went on so long, and with that massive member to its full height it felt like cum was sloshing in Megumi’s stomach before he felt more spray out of him with no room left. Megumi cried, loud and warbling as hot spend splattered onto his ass and the stone below, as Sukuna’s fingers stayed gagging him, pressing in his mouth as if to keep fucking him while Sukuna’s cock stilled.

Eventually, Sukuna sighed and began to pull out. The sound of it made Megumi’s now limp form shudder—so much, so much cum put into him so deep. By the time Sukuna’s softening cock was finally out of him, Megumi’s poor pussy was stretched enough to leak it out in gushes. Sukuna seemed pleased with this, setting down his prize to stare between his spread legs at the mess. 

“You’ve done well, Megumi. I knew you were special,” Sukuna said, cradling a crying, barely conscious Megumi to his chest. His breath still rattled with the traces of sobs, Megumi sucked on the fingers against his tongue on each inhale, muscle memory to pacify. As Sukuna wiped at his cheeks, Megumi felt less and less present. “You won’t regret this vow, little one. Get your rest.” 

“If the baby doesn’t come on the first try, after all...you’ll need it.”

Megumi woke up unable to move. There was a pounding sound—someone was knocking hard on his door.

“Fushiguro! You’re gonna be late, wake up!!” Itadori called out to Megumi before he could hear Itadori’s sneakers squeaking against the hardwood floor towards the dorm entrance. Megumi managed to release himself; he had cocooned into his blanket during the night, leaving his limbs trapped. 

Glancing at his alarm clock and seeing Itadori was very much right, Megumi wouldn’t have time to ask himself why his underwear was sopping wet until much, much later.

Notes:

I'm on twitter @bibliokuma, if you'd like to see me RT things and cry about scattered anime fandoms.

Thanks again to @mogamiworld for the concept! FOLLOW THEM!

AND THANKS TO JAMMIE, my fantastic friend for beta-ing this for me! You are a lifesaver.