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The candle near his futon was flickering as Yuji lay on the mattress, staring up at the ceiling, that familiar stirring of heat and need pooling in his lower body, filling him with an ache that was hard to quell.
He just kept picturing it. Sukuna’s powerful body, on top of that woman’s. Absolutely enveloping her, her knees and the spread of her hair all of her that could really be seen beneath him. The curse’s muscles moving under his skin, tensing, releasing, every slow, gliding thrust, the cant of his hips and the way his arms flexed as he held himself up…
Yuji slid a lone hand over his chest, imagining it was Sukuna’s hand on him, imagining running his hand over Sukuna’s chest instead of his own.
Forget the girl’s quiet moans— Sukuna’s low, rumbling purr, the way it vibrated through his whole body, the sound of him breathing, heavily, in Yuji’s ear—that girl hadn’t even made him sweat, let alone pant the way Yuji could. And Yuji could. He could make the curse keen, if he really tried.
He could hear it now. Hear that rare, rare, rare moan, the one that made him feel like a fucking king to have drawn out of Ryōmen Sukuna of all people, the one that most often came when they climaxed together; he wanted to make Sukuna moan like that again. Like he moaned, all the time, whenever Sukuna fucked him. Wanted to hear that sound from his partner until the day he died.
His partner…
His lover…
No one else was Ryōmen Sukuna’s lover. Only him.
Those girls were no one.
His hand crept down to the waist of his hakama, and he untied them now, a little too hurriedly, reaching into them and under the fundoshi to grasp himself. He was already half-hard, and he ran his hand over his length, feeling himself twitch and harden further at the touch of his hand, biting his lip as he pictured Sukuna’s voice, that deep, gravelly, rough voice, breathless and fluttery and calling his name…
“Yuji…”
The mere thought of Sukuna uttering his name in anything close to a moan was enough to have him completely erect in an instant, straining against cloth that was suddenly far too tight. He wasn’t sure Sukuna had ever used his name before.
The thought made him almost giddy. Made him almost breathless.
He stripped off his hakama and fundoshi in record time, suddenly feeling too warm for the room, his chest heaving. His hand went back to his cock; now freed of its confines, it stood proud against his belly, already starting to leak as he rubbed his thumb over the head, breath catching in his throat.
He imagined Sukuna touching him. Imagined touching Sukuna just like this—how he could fit his own member easily into his mostly-closed hand but could not even get all his fingertips to fully meet around either of Sukuna’s when at their hardest. Gods, it made him even harder to think of that. Of the size. And the way Sukuna felt inside him.
Sukuna had let Yuji ride him just once—Yuji was always underneath him, on his back or on his front and once on his side, so to be on top was a novel experience for him. He remembered looking down at the curse, at the broad expanse of muscle on his chest, the way his biceps tensed as he raised two hands to grip Yuji’s hips, the tattoos on those powerful abdominal muscles—eight where most had six—pointing down to his groin, his double obliques likewise leading to the spot where he was rooted inside Yuji, Sukuna’s body all Yuji could see and think about. His mind dredged up that memory now, but with a different expression on the curse’s face; instead of supercilious enjoyment, rapture. Instead of hands behind his head, so casual, relaxed, almost bored, he was tense, fists curling in the sheets of the futon, grasping Yuji hard enough to bruise him. Red eyes dark and glassy, glazed over by lust and need. Eyelids fluttering, head tipping back, lips parted. Those muscles heaving with every rise and fall of his ribcage as he breathed, as he panted. Yuji’s fingers entwined with his. His other hands fists in the sheets. Yuji’s hips grinding against his, the curse inside him, taking Sukuna to heights he hadn’t known he could reach—
“Sukuna,” Yuji whispered, working his hand up and down, his own eyes fluttering back into his skull as he pictured it, his body aching beneath his own hands. The rubbing helped, but he was under the impression that at this point the fantasy alone could make him come, and the embarrassment and shame of that on top of the mental image had him rapidly reaching his own peak. “That’s it,” he breathed to empty air, stroking harder, faster. He could almost feel the cursed energy in the room changing, the way it did when Sukuna entered the space. “…come…come for me, Sukuna…”
And the moan, his name falling from Sukuna’s lips in exultation…
“Yuji…!”
One final stroke and he was lost, to the mere imagined sound of the curse’s voice calling his name in the throes of pleasure, coming undone in his own hand to the simple thought of Sukuna coming undone in his. Yuji groaned, eyes shutting, Sukuna’s face swimming in the darkness behind his eyelids. The most beautiful man in the world, truly…
“That was over embarrassingly fast.” Gods, he could almost hear Sukuna teasing him for how quickly he’d orgasmed—
—wait, SHIT!
Yuji’s eyes snapped open—and Sukuna’s face was right above his, the curse kneeling over him as though he’d materialized out of thin air. Yuji might have jumped upright in surprise if he wasn’t feeling so spent. As it was, Sukuna’s abrupt appearance jarred him straight back into sobriety and left him scrambling.
“What the fuck, Sukuna?!”
“What, I don’t get to watch my pet amuse himself?” The curse was all grin, his wicked teeth glinting in the candlelight. “I was passing through, and I heard my name.”
Yuji’s face was burning with embarrassment. “Go away.”
“How rude. And here I was going to offer you a hand. ”
Yuji’s breath caught in his throat as Sukuna wrapped his long fingers around his cock. The curse was a cruel fucking beast, always choosing to torture him in the moments when he was most vulnerable, when the overstimulation hurt but he could no more say no than he could hold his breath forever. Always so eager to push him into overstimulation in the first place. And Sukuna was not even truly punishing him yet—his hands were not firmly around Yuji’s cock, which hadn’t gone fully flaccid, they were just barely touching him—yet he was shaking under Sukuna’s hand all the same. “Y-you d-dick—”
“Oh, don’t be like that, pet, and here I thought I was doing you a favor.” Every part of his voice said he knew exactly what he was doing to Yuji and he was enjoying it. His fingers between to tighten, to close around Yuji’s shaft, and Yuji let out a rough sob more akin to a bleat, his entire body trembling.
“Please—s-stop—” He didn’t want him to stop, but he wanted him to stop (he didn't want him to stop). He could not think. He was a whimpering mess, tears in his eyes, absolutely helpless and betrayed by his own body.
“No, I don’t think I will.” Yuji keened in his hands, his entire body trembling with how tense he was; it hurt to squirm, and it was going to be awful in the moment, but it would be so worth it in the end, he just had to push through it. He had to. Sukuna wasn’t going to let him just walk away. He didn't want to walk away, not from Sukuna—he would take everything the curse could give. “You were moaning my name in the most… arousing voice.” His own dropped almost half an octave there, turned into a deep, throaty growl, and Yuji squeaked, so tense his stomach muscles were spasming.
Gods...please...Sukuna...
“Let go,” Sukuna purred. “Relax. I’ll take good care of you, pet.”
“Can’t—you’re so awful—”
“I know, isn’t it fun?” And Sukuna started to stroke him.
Yuji began to cry, in some absolute hell between bliss and agony. His hands curled into fists in the sheets so hard his arms were shaking up to the shoulders, and for a second, just one split second, Sukuna’s upper eyes glanced to Yuji’s face, and then so did the lower set too. His hand went still.
“Do you want me to stop?”
Yuji shook his head. He would be proud, later on, that he had the energy or the control to shake his head.
Sukuna grinned at that, and tightened his fingers—just enough to grasp Yuji very firmly, running his entire palm up the length of his shaft, circling his head with the tip of his thumb. Yuji sobbed.
“Do you want more?”
Yuji nodded, even though he was fitful and trying to toss and turn like an angry toddler, and almost accidentally shook his head instead. So he forced himself to bear down on it and nod once again for good measure.
He did want more. He wanted Sukuna to make him see stars.
“Good boy.” Sukuna kept circling his head with his thumb, drawing one finger on his other hand up Yuji’s scrotum, to the very root of his cock, going from the pad of a finger to the absolute tip of his nail, a different kind of grin spreading slowly across his face when Yuji squealed. “How should I pleasure you, brat—should I fuck you? Until you bleed, until you cry and can’t move? Or should I use my mouth on you…?”
Oh god, Yuji was not in the state of mind to pick one or the other right now.
Sukuna’s grin was absolutely devious. “Why not… both?”
Fuck. Fuck. Yuji knew right then and there he was going to die.
He welcomed it.
Sukuna shifted back, lowering his face until he was right next to Yuji’s partial erection, turning his head slowly—Yuji could feel his breath on his cock and tears sprang into his eyes as Sukuna’s lips hovered inches from his tender, over-touched skin. The curse stopped, without touching him, and stopped breathing too, but Yuji wanted desperately to kick and flail like a child, he just couldn’t, he was trapped. Trapped and about to sob and beg, though what he planned to beg for exactly—respite or punishment—he didn’t know.
“You look flustered, brat. Something wrong?”
Yuji swallowed again, his breath coming in progressively shorter pants, eyes burning with tears. Sukuna looking up at him from below his own erection…it did things to him, that mental image. It was one he’d touched himself to a thousand times. Seeing it real and in the flesh right now, when he was in this state…he was helpless. His brain short-circuited.
“Look at you,” the curse purred, his breath tickling Yuji’s erection and making him squirm. “Already getting hard again...so needy, brat...is there something you’d like me to take care of?” His hand closed again, and he drew his palm up Yuji’s shaft, and then down, beginning to pump, slowly, drawing out the torture longer and longer each time. Yuji attempted to scream, but the sound that came out was strangled and ugly. Sukuna simply grinned, adjusting his grip so he had less hand on him, and touched his tongue to Yuji’s head.
Yuji wept. He let his head drop back and he wept like a baby as Sukuna’s warm tongue swirled around the head of his cock, then folded around most of the length, around the head with the tip of his tongue, down his length, again, again. Yuji tried to hit him, to shove him off, wound up seizing ahold of his hair and doing nothing but shuddering, violently, under Sukuna. And when Sukuna leaned in and engulfed him in his mouth, Yuji let out a miserable, exultant bleat that was absolutely subhuman.
The curse’s mouth was hot, warm, the back of his throat closing around Yuji’s dick as his lips wrapped around the base. Sukuna made a low, soft sound somewhere in said throat, a sound that had to be for Yuji’s benefit, or to tease—it was low and breathy and sounded entirely too close to Yuji’s own noises. His red eyes never left Yuji’s face until he put his lips in place, and started to move. Then, and only then, did the four eyes close.
“Mmm…”
Yuji keened as Sukuna drew his mouth back, careful to keep his teeth away, sucking as he pulled himself off Yuji’s dick and then releasing—but never fully leaving Yuji. He went down again, further this time, Yuji could feel his throat and the back of his soft palate, could feel how it tightened against his head when Sukuna made that sound again. He pulled back with another long, slow movement, lips sliding over Yuji’s cock, enveloping it in heat and wetness, and then sliding back down—sending spots of colors he had never seen before exploding behind his eyes as an unnatural pressure built in his skull, in his bones, until he was certain he would explode.
“S-S—” He couldn’t form words, he couldn’t breathe, he was begging without sound—
Sukuna drew back in full before he could climax, dragging his tongue broad and flat up Yuji’s swollen, throbbing length one final time and licking a bead of pearly white off the head, saliva trailing from his mouth to Yuji’s dick. He let his eyelids flutter, let another moan slip from his lips that made Yuji’s stomach knot and buck. “Yuji…”
The curse’s voice with that tone nearly launched Yuji into an orgasm right there. Only the ache held him back, it wasn’t enough.
“You’re—mocking me—” Yuji rasped, his voice wavering and almost pained, desperation sounding nearly like a sob in his throat as Sukuna rose above him, planting two hands on either side of his waist and adjusting his own legs, tossing Yuji’s thighs over his and ignoring how he cried when Sukuna moved him, his body spent and sensitive and wound like a coiled spring, waiting to snap.
“Maybe,” Sukuna said lightly, without concern, drawing Yuji’s hips up against his. “But you enjoy it.”
Yuji didn’t refute that.
“Hold still,” Sukuna warned, a hand going down to Yuji’s ass and slipping between his cheeks, pressing the reverse cursed energy into his tissues. Yuji couldn’t have disobeyed even if he wanted to.
He pushed into Yuji so goddamn slowly that Yuji was out of his mind before he was even halfway in. He couldn’t even buck like he wanted to, he felt like he had absolutely no control over his body, totally boneless but with entirely too many nerves. The pressure building in his pelvis and the need, the hurt, in his throbbing, aching, desperate cock was making him see in static and snow, making his head throb with every pulse of his dick. He cried, he writhed, he needed Sukuna inside him all the way or so help him—
As though he could read Yuji’s mind, or at least his incoherent blubbering, Sukuna obliged. Like the tension in a thick fabric band releasing as the needle pierces it, he finally slid inside Yuji up to their hips, and Yuji felt an abrupt feeling in his core that was half pressure and half ecstasy. It sent a small stab of discomfort through him, as usual—he was stretched as far as he could be around Sukuna’s length, but at this current moment everything was sore, so it didn’t read as such, and as his rapidly heaving breast and flushed cheeks indicated, it felt good nonetheless. It was pleasure and pain alike, good in a sea of too much, something he’d remember with a light-headed high afterwards but in the moment felt like it was killing him slowly . Yuji groaned, wept, his hands shaking at his sides as he grabbed the sheets, unable to find the strength to even press his knees against Sukuna’s sides. But Sukuna had stopped there, bottoming out with a faint hiss, inside Yuji to the hilt, and now he did nothing further. He just held himself there, looking down at Yuji—the complete opposite of his fantasy earlier, but such a good reversal of it Yuji had zero complaints. His wild pink hair, his flyaway eyebrow, his sharp features and cold red and black eyes. Oh, he was beautiful. Yuji was delirious and he was beautiful and perfect and—
“Mmr,” Yuji mumbled, whispered, whatever, fighting for his life. He meant to say more, really. He needed more. If Sukuna was going to torment him by gods he better be willing to go all the way! “Mrrr,” and now he was weeping.
That seemed to be all the prompting the curse needed. He drew out, as slowly as he had sucked at Yuji’s cock, and pushed back in just as painstakingly slow. Yuji screamed, or at least made some sound, he wasn’t sure what and he couldn’t even hear himself over the way his pulse was rushing in his ears as his head was full of snot and tears.
Sukuna rolled his hips back and then thrust them forward, still moving slowly, making Yuji moan—but a small sound from the curse was not lost on him, even though he was half delirious with too much everything. The faintest little nose, somewhere between effort and ecstasy, but it lit Yuji on fire. His head tilted back, his eyes shut for a moment. Yuji saw his lips part, just briefly.
It was done like thread snapping. Yuji came, almost choking on his own saliva as it ran from his slack lips, chest heaving until his ribs were stabbing the air with frantic gasps, hands digging into the futon mattress, and tears streaming from his eyes. Sukuna took his own time, keeping up that slow, steady rhythm, using Yuji’s body to complete himself until he sped up just incrementally, and then stopped with a faint shudder, spilling himself inside Yuji, who was a limp mess on the bed beneath him.
There was that faint sound again, torn from Sukuna’s clenched teeth when he reached his peak. Something so stuttering and breathy and human.
“There.” Sukuna said, slightly breathless, and he pulled back and out of Yuji. Yuji made a faint, pitiful gurgling sound with his lips in response. “I daresay you’ve been sated, no?”
Yuji was silent for a moment, then blubbered something unintelligible, tears rolling down his face. When Sukuna frowned, he waved a hand in the air to indicate he was all right. The curse moved aside so Yuji could close his legs, and Yuji reached for Sukuna’s hand. Sukuna reached back, grasped his, and Yuji managed a smile through extremely red, teary eyes. Something about his absolutely pitiful expression softened the curse, because he bent forward and kissed Yuji’s forehead, surprising Yuji into a hiccup.
“Do you want healing?” He asked quietly. “I figure I should offer, if you’re crying.”
Yuji shook his head. “‘M good.” It came out as a whimper.
Sukuna smiled a little again. “Good. That’s what you get for touching my things, by the way.”
Yuji snorted with laughter mid-sob and swatted Sukuna with a hand; Sukuna caught his fingers and kissed them.
“Go to sleep, brat. You need it after that and we're leaving tomorrow morning.”
Yuji nodded, his entire lower region smarting too much to pull the blanket over him and his body too hot to need it anyway. Sukuna got up and walked towards the door, pausing once to glance back at Yuji laying there on the futon like a discard doll, then shut the shōji behind him when he left.
Yuji was able to turn his head to the side and crane his neck enough to blow out the candle. He lay there in the dark, smelling the slight smoke from the wick, remember Sukuna’s hands on him.
Remembering the way the curse had breathed in, sharply, when he pushed inside him…
The soft sound he’d made—almost certainly just for Yuji’s benefit—when he put Yuji on his tongue, engulfed him in the heat of his mouth…
The other sound he’d made, that definitely wasn’t for Yuji’s benefit.
And that moan, faked but still enough to make Yuji dizzy.
“Yuji… ”
Yuji was far too tired and much too overstimulated to even sort of be horny again, but his dreams were entirely filled with Sukuna’s eyes staring up at him from between his legs.
He belonged there as much as Yuji belonged underneath him. They were made for each other, and Sukuna was his.