Work Text:
Sukuna hates this.
Trudging out of his room, rubbing tired eyes, he looks over at the door right across from his, seeing a man he doesn’t recognize squeak and run out the hallway. Coward.
He watches him move straight to the front door before turning back to look at his brother, leveling him with a glare.
Yuuji’s eyes widen as he realizes he got caught, scratching the back of his neck with a blush rising to his cheeks.
“Another one?”
Yuuji jumps when Sukuna speaks suddenly, voice gravely and deep from sleep, shaking his head to try and deny any wrongdoing.
“I-it’s not what it looks like! I swear, he’s just uh… a friend?”
It’s obviously not believable considering his track record and Sukuna thinks as such, taking the step forward needed to cross the width of the hall, flipping the bottom of the oversized shirt Yuuji was wearing up to see hickies littering the inside of his thighs.
“Fucking slut.”
He lets his eyes linger, a lack of cum dripping down at least abating some of the rising anger.
Yuuji stutters, watching as Sukuna walks away to the kitchen like nothing happened.
Sukuna really hates this.
Nearly every night, his brother brings home some random guy, never the same, and keeps him up at night. It’s been happening for months now, officially making Yuuji a certified nympho in his eyes.
Even worse because he always hears his name the one being screamed.
He makes coffee, knuckles white but face otherwise unchanged. His ears perk up at the sound of feet padding after him but he just stays put, taking a much deserved sip from his mug.
“Sukuna you can’t just say that, it’s mean.”
He looks over to see Yuuji pouting, gnawing on a plump bottom lip and batting his eyelashes like he’s innocent.
He continues, mixing in creamers to fix the taste, still not looking over at him.
“What do you expect me to say huh? Bringing a different guy home every night, gonna catch something at some point.”
Yuuji whines, purposefully annoying, and bounds over, hugging onto Sukuna’s arm.
“Not true, I make ‘em wear a condom and we don’t kiss or anything. Cross my heart and hope to die.”
Sukuna doesn’t shake him off, looking down at him with an eyebrow quirked, fighting a smug grin. He strangely knows that’s true.
“Oh yeah? And why’s that?”
Yuuji tries his hardest to come off as the cutest thing alive, still clinging close and dropping his voice to a sultry whisper.
“I’m saving my first kiss for my big brother, of course.”
Yuuji makes a kissy face and Sukuna rolls his eyes, shoving him off.
“Oh I’m so honored. Get fucking dressed and go to school, brat.”
Sukuna goes back to sipping his coffee, walking off and leaving Yuuji standing there.
Work is hell. He’s exhausted, not having gotten much sleep, but his mind won’t stop thinking about what happened that morning.
He’s known Yuuji’s had a thing for him for awhile.
It started out small, coming home and Yuuji ‘accidentally’ keeping his door open while he fingered himself or ‘accidentally’ sending him nudes.
Still, he’s a good older brother that has no inclinations to his only surviving family.
Is what he likes to tell himself.
Even he can’t deny how hard the kid makes him. It’s a miracle he hasn’t pushed him down yet. It gets more difficult day by day though. This recent ‘fuck everybody in sight’ stint has increasingly been getting on his nerves.
He wonders why his brother’s so fucking horny.
Every time Yuuji brings a random man home, he’s in a bad mood from more than the lack of sleep.
He wants nothing more than to have Yuuji all to himself. It’s started to creep into his dreams even, having plenty of source material to pull from.
He laughs out loud in the empty office, shaking his head as he drags fingers through his hair. He feels like he’s reaching an invisible limit.
The gall to say he was saving his first kiss for his older brother as if his cunt wasn’t thoroughly used.
The day passes slowly, a blessing in disguise since he had an unnecessary amount of work to do and not enough brain power to do it.
When he gets home, he’s not exactly sure what to expect but it certainly wasn’t the lights to be completely out with candles littering the entire space. He toes his shoes off, careful not to step on any flames. These things were literally everywhere.
“Brat! The fuck is-”
In his periphery he sees movement coming from the living room. He makes his way over and sees baby pink popping up with big amber eyes looking up at him, barely discernable in the low glow.
“Don’t be mad.”
Sukuna sighs, already knowing that whatever happened is going to make his headache worse.
“What happened this time?”
Yuuji sits up, crawling over the back of the couch and perching on it, legs kicking gently. Sukuna comes close, situating himself between his thighs.
“Well… I felt bad about this morning. I know I went too far and probably disgusted you…”
Sukuna’s eyes widen. That couldn’t be the furthest from the truth and he’s about to reassure Yuuji of that against his better judgement but he doesn’t get the opportunity, Yuuji continuing to speak.
“I wanted to make it up to you, make dinner since you’re the one to always do it after working so much…”
Sukuna can’t deny he feels his heart pound at such a cute excuse but looking around the place, it’s still dark so the excuse doesn’t help much.
“So the power?”
Yuuji averts his gaze and if the lights were on Sukuna was sure Yuuji would be blushing, embarrassed.
“Well, I may have accidentally started a fire and thrown water on the stove? Which may or may not have hit a nearby outlet that shorted the whole system? I played around with the breaker but…”
Sukuna sighs for what feels like the millionth time that day, hands going under Yuuji’s thighs and lifting him up, perching him on one arm.
“You’re always causing problems huh?”
He walks past the kitchen, not even trying to ruin his night by looking at the state it’s likely in.
On the way to his room he opens the breaker box at the end of the hall, flipping switches until the lights flicker back on. He looks back up at Yuuji who’s still sitting pretty on his arm, face dangerously calm as he speaks.
“I love you Yuuji, don’t doubt that. You could never disgust me.”
He sets him down. The loss of heat makes his heart ache but what big brother takes advantage like that? He can handle Yuuji being horny and fucking every good looking guy he comes across, even if it makes him madder than he’s ever been, but he won’t indulge selfishly.
He ushers Yuuji into his room with the promise of takeout later, a kiss to his temple all the contact Yuuji can get out of him.
It’s an entire week of the best sleep Sukuna’s gotten in months after that. Yuuji doesn’t bring a guy home or stay out late a single time.
Yuuji, on the other hand, has been practically dead all week. He drags himself through the halls at school, not listening to his lessons even more than usual.
This doesn’t go unnoticed by his friends at all, sitting together outside during lunch.
“Spill it! Just looking at you makes my food taste bad so just tell us what’s wrong.”
Nobara is the first to address it, breaking the silence. Yuuji sighs, throwing his head back and laying in the grass dramatically.
“So like, you guys know how I have a thing for my brother?”
Both Megumi and Nobara make a face but say nothing, used to his rants for a while now. Yuuji continues, not waiting for an answer.
“So… I kind of told him how I feel? In a round about way but still. Look, I know he wants me. I totally thought the constant guys thing was gonna force him to make a move but it’s been months now and nothing!”
Nobara flicks his forehead.
“You’re an idiot. You’re his family. Getting angry that tons of dudes are plowing his one and only little brother is a lot different from getting angry because he’s jealous.”
Yuuji knows that deep down but he doesn’t appreciate it being said so bluntly. He sits up with a huff, about to start an argument before he spots Gojo Satoru walking with Geto Suguru.
They’re good friends, of sorts. Gojo and Geto are the pair on campus but Gojo is a huge flirt and has tried many times to get in Yuuji’s pants, something Geto doesn’t really seem to care about.
An idea springs in his head, Megumi and Nobara instantly getting a bad feeling.
“Don’t even think about it, Itadori!”
Yuuji ignores their warnings and gets up, bounding over to the two seniors with a bright smile.
When Gojo sees the flash of pink a cheesy grin grows on his face like a weed and he opens his arms for a hug. Yuuji launches himself right in and squeals when he’s picked up and spun around.
“Gojo-senpai!”
Geto chuckles from the sidelines, a hand on his hip, the other readjusting the bag on his shoulder.
“And to what do I owe the pleasure from the cutest junior in the world?”
Yuuji giggles, laying the charm on thick as he looks off to the side, blushing. It’s his signature move and when Gojo’s smile drops a little he knows he’s got him.
“Nothing much, just haven’t seen you around too often lately. I bet all that studying has you super stressed…”
Geto sighs, already knowing where this is going as Gojo sets him down, dragging Yuuji to walk with them both without needing to hear another word. Yuuji turns his head, sending a wink back to his friends as he promptly abandons their lunch together to follow.
That’s how he ends up between the two later in his room. He’d always wondered why Geto was okay with such a flirtatious boyfriend and now he realizes it’s because they tag team. And damn were they good at it.
Hands everywhere have him overwhelmed in all the best ways, lips on his neck and pants getting unbuckled.
The two seniors are good looking, he’ll admit, but it’s in moments like these that he imagines his big brother instead. Still, at least the sex is nice.
His goal today is similar to the ones in the past; make his brother jealous. But this time, doing it with people he knows instead of random men he’ll never talk to again will surely change things up. He hopes.
The two are very insistent, his mind wandering as a result. He almost misses what he was waiting for, the front door opening and slamming closed, signaling his workaholic brother finally coming home.
Steps echo down the hallway before stopping in front of his door. He left it open just a bit knowing Sukuna wouldn’t barge in himself so he decided to give him a little push.
Sukuna was already having a bad day at work, dealing with idiots for coworkers, but when Yuuji suddenly has a ‘guest’ over after a week of blissful silence, his mood worsens.
Further still, his anger blooms when he peers inside and sees not one but two men, both people he recognizes as his little brother’s friends of all things.
He doesn’t even think twice before barging in, door slamming against the wall. He’s fuming, ripping the two boys off him.
“Are you fucking serious? Can’t you ever behave for once? What, one week was too long so you decided to upgrade from a slut to a whore?”
Geto is wide eyed, not expecting the aggressive interruption while Gojo seems more peeved than anything, his once in a lifetime chance at fucking his junior foiled. Sukuna pays them no mind now that their hands are off Yuuji.
Yuuji can’t help but fight a smile.
“Nii-san… sorry, I thought you’d be home la-”
His wrist is grabbed, cutting him off as Sukuna drags him out into the hall.
“Liar, you planned this bullshit. Fine, you win, brat. You’ve only got yourself to blame.”
He throws his own door open, pushing Yuuji inside and leveling both Geto and Gojo with a cold glare before disappearing behind the thick wood. The two aren’t sure what just happened but they quickly gather their things and get the hell out of there, not wanting to be present for whatever comes next .
Yuuji tries to turn around, plead pleasantries but Sukuna grabs the hair at the nape of his neck and presses his face into the mattress of his bed. He’s forceful, not letting Yuuji even attempt to breathe.
He starts tugging at clothes forcefully, checking for marks.
After a week of no messing around, Yuuji’s all soft skin again, not a single bruise or blemish.
Sukuna calms a bit when he sees nothing’s changed on that front. Seems they didn’t get far.
He pulls Yuuji’s head back, forcing them back to chest. He lowers his head, voice rumbling in Yuuji’s ear.
“You really love testing my patience huh? Always so fucking annoying. Those two? Really?”
Yuuji struggles, tears springing in his eyes but he has no words, no excuses.
“I just… really love you Sukuna. You always act like you’re not affected but I know you are! If you could've just given me a chance…”
Sukuna sighs. He knows he isn’t subtle, the two of them clearly cut from the same cloth.
He pushes Yuuji back down, gently this time, keeping them pressed together. He lets go of Yuuji’s hair to instead press chaste kisses to the back of his neck.
“Why can’t you just let me be a good big brother?”
He isn’t expecting an answer, the question rhetorical as his hands start wandering, pushing his shirt up until it’s getting tugged off.
Yuuji all but stops breathing when Sukuna starts shucking his pants off too.
Sukuna growls when he sees how wet Yuuji’s underwear is.
“This was for those two?”
He presses Yuuji down a bit harder and he shakes his head fast, desperate to explain himself.
“No! I always think of you, I promise.”
Sukuna narrows his eyes, unsure if he believes it. He thinks for a bit before deciding it’s embarrassing enough to admit for him to deem it true.
“You know, you should’ve just been patient. I don’t like knowing I won’t be your first. You’ve got a lot of apologizing to do”
He flips Yuuji over, pushing him higher up onto the bed, hovering over him.
“I’m gonna make sure you forget every single cock you’ve ever had.”
Yuuji shivers, his brother’s eyes like molten lava.
He’s so far from a virgin it’s not even funny but in Sukuna’s arms he can’t stop blushing, turning his eyes away shyly and trembling. He’s never felt so excited and scared before.
His every dream comes true when Sukuna sits up, pulling his own shirt off and Yuuji drools.
His brother is built; strong, handsome, and the star of every wet dream he’s had to date. He raises his hands tentatively, slowly so Sukuna can push them away if he wants to, and lets out a shuddered breath when fingers make contact, gliding along warm, tattooed skin.
“Oh fuck.”
Yuuji can’t control himself, wrapping his legs around Sukuna's waist and throwing them both over until he’s on top.
His grip on Sukuna’s shoulders is tight, eyes feral.
“Sorry Nii-san, I can’t help it, I just-”
He doesn’t finish his sentence as he reaches for Sukuna’s pants, pulling them down rough enough to actually hurt Sukuna. He likes the hiss of pain.
He won’t budge either, Sukuna already tried. He’s never seen his brother like this, so obsessive. Yuuji’s sweating, face flushed and breathing hard like he’s run a marathon.
Sukuna can’t help but think he looks pretty like this but he’d also really like to be the one in control right now. That time doesn’t come when Yuuji works Sukuna out of his boxers, jerking him off frantically.
Sukuna hums, throwing his head back as he bucks up into Yuuji’s hand.
“Fuck, brat just- hurry the fuck up.”
That’s all Yuuji needs, moving back a little and shedding himself completely bare, positioning himself right above the cock he’s only been able to daydream about, pussy dripping onto it lewdly.
He starts slow, parting the lips with the tip, grinding his hips back and forth a bit before inching down steadily.
He leans forward into Sukuna’s face, the both of them grunting before Sukuna pushes his head forward, biting Yuuji’s bottom lip and pulling him into a kiss. The shock has Yuuji sitting down fully, the kiss broken when they both moan.
Yuuji moves first, unable to stop as he draws his ass up and down, the sound of flesh meeting flesh loud and constant.
The pace isn’t particularly fast but it’s deep and Yuuji’s slamming down hard. He sobs, tears dripping onto Sukuna’s face every time he feels pressure against his womb.
Sukuna grabs his hips, helping guide him faster until he’s lifting Yuuji himself, the boy unable to keep up the momentum to match.
“First time you’ve felt a cock raw, huh? Feel every bit of me?”
Yuuji nods frantically, no words coherently making it out of his mouth.
In his muddled state, legs lax, Sukuna is able to twist them, pulling out quickly to force Yuuji onto his stomach prone before ramming himself back in deep.
He stops to grind a bit and Yuuji’s eyes roll back, cumming.
Sukuna huffs, the squeeze euphoric as he keeps going, unable to stop.
Yuuji’s moans rise in pitch, bordering into oversensitivity. Sukuna reaches below, thumb pressing hard into his clit and rubbing cruel circles.
Not a bit of this feels good for Yuuji anymore but he loves it all the same, wanting everything Sukuna gives him.
Yuuji cums again, soaking the sheets as he squirts, completely against his will. Sukuna forces himself as deep as he can go, making sure it hurts when he finally releases inside, the feeling too good to hold on any longer.
Yuuji gasps, blinking tears from clumped eyelashes, each shot of cum shaking him to his core. Eventually they go still, staying tethered together.
Sukuna lowers his head, pressing sloppy kisses to Yuuji’s neck, making him squirm.
“If you ever bring another man into this house again, I’m fucking you to death.”
Yuuji nods, face pressed deep into soft sheets, eyes bleary with exhaustion.
He’s had way more sex than he can ever think to count but never once has he felt so full and sated. He distantly makes a mental note to get a Plan B in the morning, excited to tell his friends all about it.