Work Text:
Megumi knows it's his brother that fucks him every night when he's asleep. He's known it since the very first day. Yet he lets Sukuna do whatever he wants and pretends to be asleep when in reality, he likes it more than he should.
"Are you really going to be asleep, or are you just going to pretend?" Sukuna asks and Megumi gives him an endeared look. He's so cute when he's worried for him.
"I am going to be awake, Suku. I will know everything you'll be doing. Well maybe I'll float a little bit in the headspace but I'll still trust you." Megumi tells him, taking his bigger hands into his.
"I just don't want to hurt you." Sukuna admits, and the man immediately softens.
"I remember our safeword by heart, okay? As soon as anything feels off, I will tell you."
"Promise?"
"Promise." Megumi smiles.
.
Megumi feels hands on his thighs. He can feel the eyes are already set on the place that he wants the most, his pussy. He knows what he came in here for, he's known it since it all started but Megumi still let him do whatever he wants every day and wake up acting like nothing is wrong when in reality, it's a taboo, and their parents would disown them if they ever found out.
His brother fucks him every night. It doesn't matter if he's tired or drunk or if our parents are still at home. The only thing that really ever matters to him is using Megumi's pussy like it belongs to him. He's like an animal as soon as the night comes, forgetting all his values, forgetting everything just so he can fuck his little brother as much as he likes.
He feels Sukuna's breath hot on his pussy lips and shivers from how exposed he is. Megumi had started not wearing panties far too long ago, he always liked to sleep naked anyway. He liked to give his cunt some space to breathe. But maybe that was the very thing that led him into this situation after all. Sukuna presses his nose between Megumi's folds and inhales deeply, groaning at the smell. He never understood why he did that, sometimes Megumi even caught him stealing his dirty underwear and would find them the next day covered in Sukuna's cum. He never told their parents because he was too ashamed of it, but it seems like his brother is addicted to the way his pussy smells.
Megumi feel the first lick and it's hard not to react to it. Sukuna's too good at this or maybe Megumi just always had a thing for being eaten out. But whatever the case, his pussy starts to get hot when he feels Sukuna licking it up and down. His tongue is hot and wet, added with the juices that Megumi's greedy cunt hole is leaking. Sukuna uses his thumb to spread Megumi's pussy lips apart, and without wasting any time he dives directly for the hard and aching clit. He takes the little nub in his mouth and sucks, and more sticky juices leak out of Megumi's hole. He keeps on sucking at Megumi's clit, stopping only to flick it side by side which makes it even harder for the younger boy not to moan out loud. One of his hands is on Megumi's milky thigh, keeping his legs open as he licks him, and Megumi feels helpless yet turned on as he lies there pretending to be asleep while letting his brother do as he pleases.
Right now, he alternates between slurping loudly at Megumi's folds or his clit. The pressure nearly causes Megumi to cry out loud. Every time his tongue circles around Megumi's empty hole begging to be plugged up, he goes crazy with want. Megumi wants Sukuna's long hot tongue inside of his hole, wants Sukuna to fuck him with it until he come uncontrollably all over his brother's face.
"I could eat you all day. Have you tied up to the dining table, all spread out on display just so I can taste your pussy all day, any day." Sukuna hums, diving back in.
Megumi's hole twitches. He knows he should be disgusted by this. Maybe he was just a little bit when he felt Sukuna's cock enter him for the first time. But Sukuna did something to Megumi's body that no one else did. He made Megumi want his mouth on his pussy, his fingers, his cock. He made Megumi want him, his very own brother.
Somedays Megumi feel like Sukuna is too pent up, he skips through the foreplay and just goes straight to the point, his big thick cock ripping into Megumi's little hole without a warning. But tonight he seems to be in a good mood, he's taking his time licking Megumi thoroughly. Megumi's body is getting hotter and hotter every minute, he feels Sukuna's tongue delve into his folds, lapping at his pussy like a dog eating after a long time, torturing Megumi's sensitive clit. He's leaking so much it's dripping all the way down to the sheets. Megumi moves carefully, trying to appear as if he's still sleeping.
Sukuna can't know that Megumi is awake. What if he won't fuck him that way, gets too scared and runs away? Megumi can't risk that. He's addicted to this as much as Sukuna is. He even looks forward to it every night, showering and rubbing his skin with scented oils, knowing how much Sukuna likes it.
Megumi feels two fingers entering him at once and he clamps down on them instinctively, never wanting to let go of the sweet stretch. Tears form at the corner of his eyes but Megumi keeps them closed, keeping his mouth closed except for the low whimpers that escape anyways. It feels too good to hold back, yet he tries.
Sukuna's fingers are thick and long, Megumi has a strange fascination with his brother's hands. His fingers are able to reach places inside Megumi that his short fingers could never. Sukuna plunges those strong fingers in and out of Megumi and he wants to cry every time he pulls them out. Megumi just wants to be full of Sukuna's fingers, or his cock, or anything. He just wants to be filled up.
Sukuna adds another two fingers and Megumi's cunt feels like it's crying of both pain and pleasure. He feels so stretched out, sometimes Sukuna would spread those fingers inside Megumi, make his walls stretch wider and the younger would have to resist fucking down on his brother's fingers to have him reach deeper. Four fingers are plowing into Megumi's pussy without a care in the world, juices coat them and Megumi doesn't have it in him to feel embarrassed about how much he is leaking right now.
Just when he is about to loose his head from how much he wants, wants want- Sukuna's other hand presses down on Megumi's belly, at the very bottom of it. He stifles back a cry and all that he'd been holding back comes crashing down. Megumi come squeezing impossibly tight around Sukuna's fingers, the orgasm seeming to be never ending as Sukuna fingers him through the high of it. Megumi's body feels like it's on fire and all the heat keeps rushing south wherever Sukuna touches. Megumi is drunk and hungover at the same time. If Sukuna hears the wanton sounds escaping Megumi's mouth, he doesn't say anything about it.
The sounds of the belt and buttons undoing are enough to cause Megumi's heartbeat to pick up. He knows what's about to come. The sounds of a packet ripping, Sukuna's heavy breathing. He has memorised every sound Sukuna does or doesn't make. He's made Megumi cum once and now it's his turn. It's his turn to have his share of fun. Even though Megumi is ready for it, Sukuna's cock breaks into him like an uncontrollable force. There's no build up, no letting him get used to it. He will make Megumi take it even if he can't. He's been training Megumi's pussy night after night just so he could keep fucking him like this without hassle.
Megumi rocked down towards him without being able to stop. Sukuna's cock is the only cock Megumi has ever had inside of him, and it still feels like he could never get used to his insides being so stretched out. It's thick and veiny and pumps into Megumi from the very beginning, hitting relentlessly at that one spot inside of him that makes his mind go blank. He can't feel anything except for Sukuna's cock in him, in and out, pounding him into the mattress. Sukuna grinds his hips, and Megumi feels it igniting every inch of desire running inside of him. His hips rise on their own, wanting to have Sukuna deeper, closer wanting to be used, streched, torn.
Megumi can't believe it would ever feel this good.
"You're awake." Sukuna pants and Megumi makes a mistake, his eyes move. Sukuna knows. Megumi suddenly can't breathe. He want to get away, tell him no no he's wrong. Sukuna can't know I want this too. He can't.
"You've been awake this whole time, Meg." Sukuna's voice is hard and ragged, and Megumi loves it for no particular reason at all. Sukuna's cock slides in and out of Megumi, slow, torturing. Megumi nearly cries when Sukuna doesn't put it back in his cunt. It's right there, rubbing against Megumi's hole, warm and wet and promising a pleasure Megumi can only let himself have when his eyes are closed and the world is gone. Sukuna slips inside just a bit and Megumi clamps down like he wouldn't dare let him go.
"You're awake now and you were awake the first day when I made you bleed on my cock. Weren't you, little brother?" Sukuna is speaking to Megumi and he knows that he knows yet Megumi keeps his eyes closed, still pretending.
"Open your eyes." Sukuna demands and his cock rubs against Megumi's clit, slowly, teasing, taunting. "Look at me while I break you, Meg. What are you so afraid of?"
Megumi makes a pathetic sound, Sukuna's fingers are on his clit, relentlessly applying pressure. He presses down harshly with his thumb and the feeling nearly makes Megumi sob. It's too much, too much. Megumi has come once already, his clit is swollen and red and his hole is still gaping from how Sukuna took his cock away from inside him. Megumi wants it back in his cunt, wants to continue getting used.
"Fine. Have it your way then." Megumi hears Sukuna say and there's some shuffling, an uneven sound of something hitting the floor. Megumi keeps his eyes closed, his fingers holding the sheets like a death grip. Humiliation is burning through his veins like gunpowder, threatening to light up on fire. He's wondering where Sukuna went, his body heat is there but distant. Megumi is about to risk a peak when Sukuna slams back violently into his cunt, and Megumi's mouth opens in shock, entire body shivering.
Sukuna has taken off the condom. His cock feels real inside of Megumi now, the barrier no longer there. He can feel every curve, every edge of it, he can feel it claiming him from inside out. Megumi realises his eyes are wide open and Sukuna is staring back at him, his grin wide and sexy and so so bad. Megumi hates how he's so bad but so good. Megumi hates him.
"Y-You c-can't..." Megumi manages to say but Sukuna waits for no one and nothing. He's pistoning in and out of Megumi like he wants to leave a shape of him inside Megumi's cunt.
Megumi is not on birth control. Sukuna's raw cock in fucking him open and it feels so good he wants to drool but hold on to the drop of semblance and tried to push Sukuna away. He's stronger, bigger, heavier. His cock pushes in deeper inside Megumi. Megumi forgets why he wanted him to stop in the first place.
"Oh so now you're awake." Sukuna grins and his hand curls around Megumi's neck, big, warm and tight. Those fingers were inside me, is the only thing Megumi can think of. Those fingers made me cum. He is taking in less and less oxygen with every breath. "Is this what you were waiting for, little brother? Me to fuck you raw, pump you full of cum and overflowing till I'm sure you've taken my seed?"
Megumi can't see clearly. He can't breathe properly. His vision is filled with dots of red and blue and purple and all the colors yet all he can feel is red red red passion burning in his bones. Sukuna is not wearing a condom and Megumi not on birth control. His brother is going to cum inside him, his brother is-
"It's almost like you were asking for it, you know. Sleeping with that pussy in the open. I knew I had to take it. Even if it meant raping you in the middle of the night while you're asleep."
"You c-can't..." Megumi pleads again and Sukuna tsks like he's annoyed. His other hand grips Megumi's thigh, his hold is tight and bruising. He lifts it up until it's held against his shoulder, Megumi open to him like a fleshlight.
Sukuna nearly transforms into a beast. He's moving so harshly, Megumi's cunt barely has the time to react between each thrust. He still squeezes around Sukuna's cock like a bitch, unable to hide how much he wants it, his own brother's cock. Sukuna is groaning and Megumi feels his cock pulse inside him. He's reaching Megumi's cervix in this position, his mind is a blank canvas, everything is gone. He's a hole. It's the only thing his body knows right now, he's a warm hole for Sukuna to fuck into and to milk him every time he pushes in.
"Did you feel that?" Sukuna asks and Megumi doesn't know. His cunt is throbbing. His eyes are brimming with tears. Sukuna's cock never stops, it's ploughing into Megumi like anything he's ever felt. He's never fucked Megumi like this before.
"I'm almost hitting your womb. There's no way you're waking up tomorrow morning not pregnant. I'll breed you all night, Meg. I'll fill you up as many times as it takes. You'll take every drop of my cum, and you'll be my perfect breeding bitch."
Megumi cries. Sukuna is going too hard, too deep. He could come inside Megumi. Megumi knows he wants that. It's like Megumi's womb is already open and willing to take Sukuna's seed, to bear his children, to warm his cock and be good. Megumi's body has forgotten he is supposed to be his brother, his body has forgotten everything except for Sukuna's cock tearing him apart with every hit.
"You like being raped by me, hmm?" Sukuna purrs and every time he says that word, Megumi's pussy contracts around his cock and makes Sukuna fuck him even more animalistically. Is it rape if Megumi wants it so much? If he likes it so much?
"What if our parents saw? They'll call me a bad brother for fucking my innocent little brother, they'll call me a monster."
Sukuna lets go of Megumi's throat and growls when he sees the younger's pussy. Spits on it and it falls directly onto Megumi's clit. It's been abused so much tonight yet Sukuna slaps it once, twice, thrice and keeps going on. With every thrust, he slaps Megumi's pussy. Megumi can't believe he just spat on his cunt like Megumi was some common whore, no matter how much he felt like one right now. Never mind how Megumi's moving his hips to meet Sukuna for every thrust, how his hole seems to have memorised the shape of Sukuna's cock, how Megumi's dying, aching for his older brother to cum inside and make me full and whole.
Sukuna nearly folds Megumi in half. Megumi grips both his thighs before Sukuna can tell him to and now he is lying on his bed, spread open fully, gaping, leaking, and quivering for his brother's cock. Sukuna gives Megumi just what I want, and Megumi cries as Megumi cums for the second time that night. He doesn't stop, doesn't relent, fucks his little brother through the orgasm. Megumi's throat is sore and his lips are bitten and covered in saliva. Megumi can feel Sukuna hitting directly at his womb. Sukuna is like a dog in rut, not knowing anything but how to knock Megumi up.
"Say it." Sukuna orders and digs his fingers into Megumi's thigh, fucking and fucking and fucking him and never stopping. Megumi is oversensitive and shaking at every touch, every thrust, every pressure against his womb. "Ask me to fuck you harder."
"Please fuck me harder, Suku-nii," Megumi says without pausing a beat. He's gone. He's nothing but his hole to use. "You can fuck me all you want. Nghh-"
Sukuna is turned on by that word, Megumi realises. He becomes an animal at the mention of it. This is why he didn't expose Megumi being awake all those nights ago, he liked thinking he was raping his younger brother. It drove him crazy. His younger, unknowing brother who will say nothing to anyone even if he wakes up the next day with his pussy gaping around nothing, red and rubbed raw.
"I will. You deserve it. Having a pussy this loose at such a young age. You were born to be fucked and abused by men. It's only a good thing I was the one who took you first."
"Yes. Yes." Megumi cries, and he can't believe he's about to cum again. It's like he'd pee if Sukuna didn’t stop ruthlessly pounding into his hole, stuck on abusing him. Sukuna's words burn Megumi with shame and make his cunt tighter and more desperate. He knows all his buttons. "Please fuck me, Suku-nii. Fuck me every day. I l-love it. Love getting fucked by you."
Sukuna screams and his cock swells in Megumi. He feels like he might be floating in the clouds. He no longer has legs or any other part of his body after all. Everything is focused on Megumi's cunt and Sukuna's cock in it. Sukuna comes in Megumi with a loud curse, hips still moving, still going. Megumi can feel it inside him. It's hot and warm and sticky and fills him up to the brim. He is so full of it. He squeezes so he can milk it all out of Sukuna. The older man groans and buries his cock impossibly deeper. Megumi come with a startled cry because he does not know what's shooting out of his hole all that he knows is that there is fire between his legs and Sukuna's cock is the only water that can quench it. Megumi doesn't want it out of him, now or ever.
He will get pregnant from this. Sukuna's shooting straight into his womb at this point. Megumi's cunt is marked from the inside out, his body belongs to Sukuna and so does his mind. He's broken beyond repair.
Sukuna slips out of his pussy but Megumi is still squirting, wetting the bed like a bitch in heat. Some of Sukuna's cum leaks out and Megumi struggles to angle his hips higher, still bent in half to keep it all inside of him. He wants to be always full of Sukuna's cum, to always feel like he have a reminder of his brother's cock that had been inside him.
Megumi blacks out from exhaustion.
Sukuna isn't there in the morning, just like always. Cum is dried and sticky on Megumi's thighs and even inside of him. His hand goes to his flat belly. He's truly bred Megumi like his bitch, the condom is lying there on the ground. The one Sukuna took off before shoving his raw, angry cock in me. His pussy is torn and sore. It's red and swollen from the abuse of last night. Sukuna had taken every last drop of Megumi's body and left him to wake up alone.
Megumi limps into the kitchen and Sukuna is standing there, hands folded in front of his chest. Megumi sees him smirk and heat rushes through him despite being so fucked out.
"They're gone," Sukuna says, and Megumi can't move, can't speak. "Our parents, they're gone for a week. Business trip."
Megumi's breath rises, and he's aware of Sukuna's eyes on him. He's thinking what Megumi's thinking because when their eyes meet, he takes one step closer. The air is heavy and hot.
"Let's do it in their room this time."
Megumi forgets that his pussy is still worn out and that he has bruises on his body that haven't healed, and that he can barely walk properly.
Behind Sukuna on the fridge, there's a picture of Megumi and him and their parents. Megumi feels like he's ten feet under water. He's his brother. He's his parents first child. They live in the same house, born of the same parents.
Sukuna fucked him last night and Megumi liked every second of it. And he's about to let him do it again. And again. And again.