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2024-09-16
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born hungry

Summary:

The attraction between Riku and Sion was so fast, so powerful that Yushi doesn't think anything could have stood in its way — much less him.

And yet.

Notes:

as always, this would not exist with r. <3
thank you to everyone who read this while in progress — hana, anu, kari, sloane, your encouragement means a lot - as well as to mitski and sheena ringo for always helping me write, lol

this was originally inspired by this photo, lol & also sion being. just. horny and obsessed with riku. (this hasn't changed since i started this like two months ago lol)

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

Work Text:

Yushi is not sure that Sion is paying attention to the movie they're supposed to be watching.

In fact, he's not sure Sion even knows what it's called, at this point. And — he gets it, really. He's not able to pay attention all the time. (A lot of the time.)

But it was Sion who came in and asked if they can watch something together — the three of them. With the dorm change, they haven't been able to do these impromptu movie nights as much, not to mention that the schedules have been brutal, barely leaving them time to breathe.

And the fact that Sion wanted to spend his first free evening in a while with them... It felt pretty special. The small, deep part of his heart that has been reserved for a while, soared for a moment before wondering if it was Riku that Sion really wanted to spend time with, and just didn't want Yushi to feel excluded (because he was nice like that).

Yushi gets it, really. The attraction between Riku and Sion was so fast, so powerful that he doesn't think anything could have stood in its way — much less him. No matter how close him and Sion were, no matter how intimidated Riku was at first, or whatever hold-ups Sion might have had as a leader of the group... it was inevitable. Yushi knows it; he saw it happen before his very eyes.

And yet.

He just cannot say no.

It's not that he feels jealous, exactly. He knows, rationally, that it's a better idea to leave the two of them alone, but... it's hard. It's hard, because he still craves their presence, the comfort and the joy of it, despite literally seeing them everyday.

Because these evenings, with just the three of them, always feel somewhat freeing, exciting and special — and Yushi doesn't want to let go of it so easily.

Yushi chose the movie — Sion insisted on something Japanese so he could practice, but now... well, Yushi's just glad he didn't choose Kaibutsu. Even Sakuya was teary-eyed when they watched it together, and who knows how it would go with the three of them.

Riku would definitely cry. Yushi would cry, because he cries every time he watches it, and Sion would probably cry out of sympathy. A big crying session is most likely not what Sion envisioned when he suggested this.

And yet... Yushi's not sure what he envisioned, because about one third into the animated movie he realises that Sion's strangely quiet, instead of asking them occasional questions and making stupid comments. Did he fall asleep? But when he glances over, he sees Sion's eyes open, even if they seem to be... focused on Riku, more than anything.

Which is — okay. Yushi has accepted it.

Then he remembers that he still has Riku's hand in his lap — because Riku reached out, and Yushi took it, grateful to have something to fiddle with. Grateful to have Riku by his side.

Could it be bothering Sion? No, no, Sion is not that petty. And they're always close like this, this can't be it.

Maybe the movie was just an excuse to look at Riku, after all. Yushi cannot exactly fault Sion for that.

He counts the knuckles on Riku's fingers, one by one, before realising he's trying to look at them instead of the screen, and forcibly withdraws his gaze from their hands.

He doesn't know if it makes it better or worse that he knows they have... done... something. Kissed, at least. That's what Riku told him a few weeks ago — eyes down, voice shaking, hands clasped in front of him, as if he expected Yushi to... what? Scold him?

But Yushi didn't know what to say. He was not surprised — a part of him expected it, — he was not jealous, he was not upset.

Well, maybe a little. He didn't know why Riku was telling him, why now, or why he looked this scared, this... worried. Did he think Yushi would not approve — did he need Yushi's approval?

"I see," he finally managed, and wished the ground would swallow him up.

He did not wonder how it felt, or how it happened. It was not his place. And... also, he did know how it felt to kiss Sion.

Riku kept looking at him, now almost expectant. But Yushi did not know what he should say, or how he should react. In the end, he murmured, "I'm happy for you." It wasn't the whole truth, but it wasn't a lie, either.

Yushi doesn't know what he feels. It's easier to ignore and forget, get swept up in the idol life, and not think, absolutely do not think about how Riku looks after a makeout session with Sion, about Riku's hands in Sion's hair, or Sion's smile as—

Except that, well. Now he's got himself into exactly the situation he should have been trying to avoid.

A quick glance tells him that Sion is at least trying to focus on the movie, even as his hand is resting on Riku's bare knee. Riku is strangely quiet — could the movie be getting to him? Could he be asleep? — but before Yushi can think any more of it, Riku makes a small sound and drops his head on Yushi's shoulder.

More accurately, his face is now kinda smushed into Yushi's neck. Yushi does not want to complain, but Riku's steady breathing is giving him goosebumps. Hm. It's pretty cold, maybe he should go and get a blanket, Riku might get cold with his legs all... exposed.

But Riku's hand is warm where he's drawing little circles on his palm, and, okay, maybe Yushi is overthinking it. He should just focus on the movie, and stop this thinking, stop getting distracted, because everything's normal, everything's fine, and he's the only one—

Riku makes another sound, muffled by Yushi's skin, but — unmistakably — a sound.

Okay. Okay. He could be dreaming. He could be crying. He... he... he is breathing a little faster, and Yushi can feel it, the warmth, the wetness, right on his neck.

He swallows. Then looks to the side.

Sion's hand is still there, just... a little bit... higher. His grip a little tighter. He is still, ostensibly, watching the movie.

Yushi cannot remember anything about the movie.

He tries not to watch, but it's just... so hard to resist. Because he can swear that Sion's scratching the naked skin of Riku's thigh, fingers inching towards the edge of the shorts, and it — cannot be happening.

Yushi moves before he can think, slapping Sion's hand — hitting the skin — and feeling, more than hearing, Riku's consequent gasp.

His eyes meet Sion's. The universe does not end.

It's too dark to see properly, but the fire in Sion's eyes still takes his breath away. He wants — needs — Sion to look at him like that, and even as he knows it's all for Riku, he cannot find it in himself to care.

He's not sure who moves in first. It must be Sion, because, somehow, he can still feel Riku's mouth pressed against his neck — their hands still squeezed together — and it's like that, with Riku beside him, that Yushi kisses Sion for the first time in over a year.

Back then, the stress of the survival show and the incoming and simultaneously dreaded debut made Yushi absolutely certain that they couldn't continue what they had — which wasn't a lot, just... cuddling. Comfort. Occasional kisses. Nothing too intense, nothing to hold onto.

It was mutual, he thinks. They both agreed it was for the best. A part of Yushi knew it wouldn't have lasted anyway, and so he buried all the stupid, inconvenient feelings deep down, where they belonged.

He cannot remember what those kisses felt like, but he's sure they weren't like this. There's a desperate edge in the way Sion kisses him, a fire that wasn't there before. A fire that Riku must have ignited. Yushi knows this, Yushi knows it all, but with every kiss there's a soaring wave rising inside of him, forcing him to reach and take, take anything Sion can give him, even if it's just this once.

He gets so lost in the kiss he doesn't even realise where the sound is coming from, and only snaps back to reality when there's a tug on his hand, and the vague muffled sounds turn into:

"Yah, not fair," Riku whines, "don't ignore me—"

Yushi rears back, tethered only by the grip on his hands by both of them. He stares — at Sion's wet, shining red mouth, at Riku's flushed face and disheveled appearance. Somehow, he looks wilder than Sion, despite... despite...

"I'm sorry," he manages, and Sion's shaking his head before he can continue.

"No, I'm sorry—"

"The only thing you should be sorry for is not kissing me yet," Riku cuts him off.

Sion bites his lip. Yushi knows what he's going to do before it happens — he doesn't know how he's been able to resist before. He doesn't know if he would've been able to.

He cannot look away. Sion moves in slow, as if giving Riku — or maybe, Yushi — time to pull away. Riku's eyes are fixed on Sion's face the whole time, but at the last possible moment he glances at Yushi with that same expectant, worried look. And then they're kissing.

He cannot look away.

As soon as their lips touch, Riku is kissing Sion as if starved, as if Sion is the first sip of water after a grueling dance practice, as if nothing else matters; and Sion is clawing at him like he's been waiting for it the whole day, which... is probably true. Yushi aches to see it, and doesn't know who he's aching for.

But one of Riku's hands is still clasped in his, maybe the only thing keeping him tethered despite having no place here. And as Sion presses into Riku, as Riku yields, giving way, leaning back, leaning into Yushi— he squeezes Yushi's hand tighter, as if he needs him too.

Yushi cannot think about that — he can barely think about anything, his mental capacity overtaken by the soft whines escaping both of them, by the sheer enormity of what he's seeing — or feeling, even, because they keep moving closer, until he's forced to break the only point of contact and instead bear the weight of their bodies, moving continuously, beautiful in their synergy.

Lost for what to do, he gingerly holds Riku by the shoulders, and — it feels like — like Riku rests his head on his shoulder again.

Perhaps it's that small action that breaks him, or maybe it all just builds to this: opening his mouth to say, quiet, "Riku-chan sounds so beautiful."

He doesn't have time to overthink it. Riku gasps and arches, breaking the kiss, forcing Yushi to feel even more of his body heat. He exchanges some sort of silent communication with Sion, and Sion... Sion smiles.

"He does, doesn't he," he whispers, hoarse and so achingly familiar. "So pretty."

Yushi doesn't try to say anything. The cresting wave inside him rises higher and higher and threatens to overtake him.

"Ushi-ya," Sion calls, unbearably tender, "I'm sure you can draw more of those sounds of Riku." His hand lies on top of Yushi's and slowly, gently drags it down over Riku's collarbones, to his chest, to his hips and bare legs. All the while, Riku breathes heavily into Yushi's shoulder.

It was so easy to deny himself this. Them. The possibility was not something he could even come close to, so — why wonder? But Sion's shining eyes are staring at him with so much trust. Yushi wants to return it tenfold.

Riku's thigh is cool under his touch — a contrast to the rest of his body, — and Yushi just pets it at first, unsure, until Riku makes an impatient sound in the back of his throat, and the wave breaks.

The sensations hit him all at once — Riku's scent, his skin, the shudders that go through him as Yushi scratches at his thigh, the breathy moan when Yushi nuzzles his ear; all of it so perfect, so beautiful, so new — and Yushi cannot get enough, cannot stop, even as Riku gets louder, and starts writhing, and Sion has to grip his hips to stop them all from falling off the couch.

Yushi meets eyes with Sion then, and he looks — he looks radiant. He looks like he can't believe his luck, and Yushi cannot bear it.

His gaze lands on Riku, who's looking back at him with wild eyes. He's too beautiful, too lovely in his disheveled state — but it's easier to look at him, because this, at least, Yushi understands.

Or he thinks he understands.

"Yuu-chan," Riku says, and Yushi is gone.

He tries to remember what he's here for — to draw beautiful sounds out of Riku? to be... what, exactly? — but he wants too much now, knows too much of what he can't simply forget, and his hands fiddle uselessly with Riku's clothes until Sion's hand covers one of his again.

"Yuu-chan," Riku says again (and Yushi wants it again, and again, and again), "won't you kiss me too?"

There's that worry, and hesitance, and underneath it all — determination. Yushi doesn't know how anyone would ever be able to refuse him anything. He tried, he tried and tried and tried, and in the end, it was all for naught.

Riku's hand reaches for him, pulls him closer, letting Yushi fall into him completely.

It starts so slow, so tentative, but Yushi's heart is still about to jump out of his chest. He's still afraid, afraid of wanting this, of wanting Riku, of asking for too much. It doesn't seem right.

But Riku's hold on his neck just gets stronger, and his mouth is moving insistently, as if asking, please. Let me in, please. And Yushi can only resist for so long.

The moment he parts his lips, the moment he starts kissing back, Riku sighs into his mouth and leans impossibly closer, tongue licking gently into Yushi's mouth, making him shiver. It feels so familiar, so right somehow, even though they've never... a stray wild thought comes upon him — is that all because of Sion? — and flies out, as Riku twists to press himself closer, fingers buried in Yushi's hair, kisses quickly turning frantic, desperate, as more and more sounds escape, from Riku, or maybe both of them. Closer, closer, closer, Riku's body covering him, grinding into him, and Yushi is helpless to stop the wave — until suddenly, Riku gasps and jerks away.

Yushi blinks, then blinks again, trying to clear his head even a little — and meets Sion's eyes, dark and full of something unfathomable. A momentary sense of shame descends upon him, before he notices Sion's hands under Riku's shirt — not doing anything, just... resting there.

Yushi licks his lips nervously. Sion follows the motion, unblinking.

"You... you're so..." Sion mumbles, and he's breathing heavily, too, even though he wasn't even part of what just happened. Or maybe he was; maybe there's simply no other way.

Yushi watches, transfixed, as Sion leans closer to kiss the exposed skin of Riku's shoulder, as Riku tilts his head with a heavy exhale, and Sion trails slow, lingering kisses up to his ear, and Yushi sees Riku swallow, and shiver, eyes fluttering. There's not much thoughts left in his head, except how unbearably beauiful they are, and how much he's aching to be a part of it.

His hands settle on Riku's waist, pinkies lightly grazing the skin on the edge of his t-shirt, and it's Sion's hands, again, that guide him under the fabric, and as soon as their hands meet, as soon as they glide up over Riku's ribs, Riku's head just falls on Yushi's shoulder, his heavy, shuddering pants destroying whatever was left of Yushi's sanity.

"Can I kiss you again?" Sion asks, and Yushi finds himself nodding — as if he could ever deny him, as if he could possibly ever deny this. It's clumsy and uncoordinated, when their lips meet, but it's also right over Riku's shoulder, the thought alone making Yushi burn hotter. He only realises that he's squeezing Riku's sides when Riku whispers another "Yuu-chan" into his neck, except it just adds more fuel to the fire, forcing him to whine lightly into Sion's mouth. Immediately, the wet-hot feeling on his skin turns into a kiss, and then another, and it's a scary and heady thing — having someone pay so much attention to him, someone intent on drawing out sounds out of him. Sounds that he just has to let out into Sion's waiting mouth, messy and weak and—

But instead of being disappointed, Sion just starts pressing kisses all over his face, and Yushi can feel the smile in his voice as he whispers, "Ushi, Ushi, Ushi, I've wanted this so much, I like you so much," and when Yushi squirms away in embarrassment, he adds, eyes shining, "Both of you, I..."

Yushi has no choice but to kiss him again, wonder and disbelief swirling inside. Sion tastes like familiarity, like safety and acceptance, and then — of course, of course, of course — he tastes like Riku.

Riku, who's making soft little moans into Yushi's ear as their hands move across his skin, together, fingers intertwining, who's twisting and shifting under their joint touch, and suddenly Yushi needs to see him. It's hard to break away from Sion's mouth, but when he does, when their eyes meet, Yushi knows that Sion gets it.

In a smooth motion, Sion slides his hand away from under Riku's shirt and puts it on Riku's hair, petting him lightly. As if hypnotised, Yushi watches Riku immediately lean into the touch, and little by little, raise his head to meet Yushi's eyes.

"Riku..." he exhales. Riku's eyelashes flutter as he looks down to Yushi's lips, and then back up.

Realising he still has his hands on Riku's waist, shaking slightly from the power rush, Yushi glides his fingers higher, and higher, until he can reach his chest, and watch him crumble beautifully under Yushi's uncertain touch.

"Oh — god, you should... should scratch his nipples," Sion mumbles, jolting Yushi out of his fascinated stupor. Riku's eyes snap back open, and as Yushi follows the — advice? command? — he feels completely swallowed by Riku's dark gaze, only belatedly realising that Sion is still holding his head up, if ever so slightly.

"Ah— hyung—" Riku whimpers, and Sion's eyes sparkle before he leans in to kiss his cheek gently, and Riku turns, trying to catch his lips. Sion almost lets him, evading at the last moment to kiss Riku's jaw instead.

Yushi forgets himself once again, watching their playful dance in its obviously natural and familiar motions, fascinated and still stupidly longing. It seems terribly unfair, to feel like this despite everything — and yet, he finds himself unable to move, unsure if he, once again, is welcome.

But then, when Riku strains for another kiss, Sion whispers, "Don't you think Yushi should get a turn?"

It sounds teasing, playful — and still Yushi freezes, wondering if he's misheard. But Riku looks him right in the eye — a question and a confirmation, — and then his hands are cradling Yushi's face, thumb on Yushi's lower lip, gentle. Welcoming.

Yushi darts his tongue out and licks.

Riku jerks back in shock, but Sion is laughing, easy and bright, and Yushi feels lighter somehow, which probably is what makes him capture Riku's thumb once again with his mouth. It's instinctual — he doesn't think he's ever thought of this, not specifically, — but Riku's shocked, incredulous look is everything to Yushi.

He feels so powerful, with both sets of eyes on him, enough to bring Riku's hand to his mouth. He's not sure who gasps, if it's Riku or Sion, but it gives him such a kick that he starts pressing kisses to Riku's knuckles, not letting go.

Riku's biting his lip, and Yushi feels a heady rush, like he's already addicted. Suddenly, he understands Sion very, very well. The flush of Riku's cheeks, the quick lifting of his chest, the dark bottomless black of his eyes, the red of his lips getting redder every moment.

"Yushi," Riku whines, weak, but enough for everyone to hear.

Yushi bites on his finger.

"Fuck," he hears, and when he looks over, Sion has a hand pressed over his own mouth, and another gripping the barely visible slip of skin under Riku's shirt.

That small moment of distraction must be enough, because the next thing Yushi knows, Riku nearly knocks him off the couch with the force of his kiss, licking into Yushi's mouth with such raw desperation that it floors him completely, leaves him gasping for air.

"You— you're so—" Riku pants between the kisses, "you drive me crazy—"

Yushi can only hold on while Riku essentially falls into his lap, kisses turning deeper, messier, hands in his hair, tongue in his mouth — he's never been kissed like that, never had anyone want him like that... except, maybe, Sion.

He reaches a hand out, and Sion catches it, intertwines their fingers, a silent "I'm here".

"Riku—" Yushi manages to squeeze out. "Riku, ah—"

"Do you know," Riku mutters in Japanese, dead grip on Yushi's shirt, eyes downcast, "do you know, how it feels, when you— when you are so close one moment, and then so far the next one, when I don't know how you feel, when I—" he gasps, and it sounds wet, teary, "When I feel like you see me through, all the way, but I don't know if that's the way I see you, it's— it's so—"

Yushi swallows.

"Ri— Riku-chan," he mumbles, but doesn't know what to say next. Is there anything he can say? Will it matter?

He leans in, trying to catch Riku's gaze — except catching his lips is just so much easier.

Yushi tries to convey everything: I know, I'm sorry, I see you too, I want you too, thank you, thank you, please don't go. He doesn't know for how long they keep kissing, slow but intense, Riku's hands wandering all over Yushi's body, leaving shivers in their wake — it's just that when Yushi moves in closer, chest to chest with Riku, and starts mouthing at his neck, that Riku shudders and falls back — right onto Sion.

Their eyes meet. Sion licks his lips.

Yushi watches, enraptured, how Sion's hand sneaks under Riku's shirt and makes its way to his belly, causing Riku to gasp and arch slightly.

"Please, ah, pleasepleaseplease," Riku whines, and Sion torturously slowly lowers his hand to palm Riku over his shorts.

Yushi doesn't know what possesses him in that moment, but his body seems to have a mind of his own, reaching out and batting Sion's hand away.

Sion looks at him in shock, but also — in wonder. Yushi feels drunk on power. A part of him is still shaking, wondering, painfully out of his depth, but he wills it to stay down.

Because Riku's eyes, too, are wide open with astonishment, and it fills him with reckless bravery, the kind that pushes him on stage, in front of cameras, the kind that drives him now — to move down, down, and slip onto the floor, and turn Riku's knees towards himself.

"Oh god," Riku whispers, hand flying to press over his mouth. Yushi plants a hesitant kiss on the inside of his knee in response, and hears Sion's sharp inhale.

Thoughts fly through his head — what is he doing? how is he acting like he's done this before? what pushes him to do this now? — but, just like on stage, they stay simmering in the back of his mind. They have no power over him now.

This is what matters: Riku's shuddering breaths escaping half-muffled from his mouth. Sion's dark eyes following his every move. It's what makes him continue, what makes him brave, and reckless, and probably crazy.

He mouths at the edge of Riku's shorts, shifting them up, up, until there's nowhere to go but forward. The moment his breath falls on Riku's bulge, he hears a strangled moan, and is almost knocked back, but Sion quickly grabs Riku's hips to stop him from moving.

"Yu— are you sure," Riku whispers, hoarse, and Yushi looks up, drinking in the sight of him. Ah, he is really, really beautiful like this. Eyes wide and black, lips swollen, flushed down to his neck.

Yushi takes his hand, intertwines their fingers. Places it on Riku's thigh. Looks left, at Sion, a silent request.

A heartbeat — and Sion puts his hand over theirs.

It makes sense. Yushi can't deny it — doesn't want to deny it. He wants to drown in their attention, their affection, for him, for each other.

Before he gets overwhelmed and tears up or something, Yushi leans in and mouths at Riku's dick through his shorts.

"Ah— Yu— fuck," Riku whimpers in short bursts, so Yushi breathes out, and nuzzles, all the things that he's never really envisioned, but that feel so right now.

"God, Yushi," he hears Sion breathe out, which only encourages him more. He kisses Riku through the fabric, and then moves higher, nipping at his exposed belly.

Riku's moans grow a little muffled, and that won't do.

"I want to hear you," Yushi mumbles into the skin.

"You're— so—" Riku breathes out, but breaks off and into another muffled, surprised whine.

Yushi raises his head, and sees them kissing — messy, without any kind of finesse or decorum. Sion's free hand is tangled in Riku's hair, gripping tight, and Riku's is roaming under Sion's shirt, and — well, that wasn't what Yushi had in mind, but they look so good, they sound so right, Sion's desperate moans and Riku's little gasps, and Yushi only realises he's forgotten what he was doing when they break for air, and Sion starts mouthing at Riku's neck, and Riku — Riku looks down at Yushi.

Yushi wants to kiss him again — wants to taste Sion on his lips, almost wants to climb back on the couch and join them, somehow, but — but he wanted to do this, and he wants to see it through.

"Off," he mutters, tugging at the shorts — surely it can't be comfortable, what with how hard Riku is, and how wet Yushi made the... whole front...

But Sion seems single-mindedly focused on Riku's collarbones, tugging the t-shirt aside to access more skin, and Yushi really doesn't want to disturb them, so he does the next best thing — sucking and nibbling on the skin right above the hem, dragging it lower to expose more, mirroring Sion.

He looks up, and Riku has a hand in Sion's hair, and he can hear the breathy "hyung", and Yushi feels an edge of something decidedly un-friendly.

Before he can even bother to think on it, his body is already moving forward and biting on the newly exposed skin, finding coarse hair and burning warmth there. So close, fuck—

"Aah!" Riku yelps, and looks at Yushi, and Yushi smiles.

He lowers his hand, dragging the shorts down, until they're barely able to contain Riku's dick, and presses hard. Riku's mouth drops open.

"Yushi—" he starts, then gasps, and that's how Yushi knows that Sion understood his challenge.

Slowly, so as not to spook, Yushi moves all of their hands to his own head. He wants — craves — needs their attention. He feels addicted, just like the stage, just like the exhilaration of a performance (with them, always with them), and he wants— he wants—

He's always felt like he wanted too much. Like he couldn't fit all of his desires in one body, afraid it would spill over, and then everyone would see — everyone would know.

He feels it spilling over now, he knows he cannot contain it, not now, not ever again.

He sucks on the inside of Riku's thigh, unable to hold back, unable to stop, and senses the hands stroking his hair shakily.

"Yushi—" he hears, but can't even tell whose voice it is, as he keeps his mouth attached to the skin, flaming hot, feels the goosebumps under his lips, moves up and up until he finds Riku warm, hot, pulsing again, so hard — for him, for them, — and Yushi tries valiantly to suck at him with renewed vigor, even if it doesn't make much sense to do it like that—

"Yushi!" someone calls, louder, and Yushi finally looks up, blinking, both his eyesight and his mind so blurry he can't even tell what he's looking at.

"God," Sion whispers, gaze burning through Yushi, and then he lands on the floor next to him, and he's kissing Yushi, something sweet and tender, unbearably so.

"I was—" Yushi protests when they part, but Sion just brings him closer into a half-embrace, as he starts to nuzzle into Yushi's ear. "I was just getting— ah—"

Riku lands on the floor next to them with all the grace of a bag of rice. "You're both so— ah, un-unfair," he complains, immediately plastering himself to Yushi's other side and kissing his neck.

"W-wait," Yushi gasps. This was not— this is not how it should go, he's— they can't—

"I would've come the instant you put your mouth on my dick," Riku whispers in his ear, and somehow that thought alone makes Yushi ache — makes him instinctively seek out the closest point of friction, which ends up being Riku's thigh. "Oh— fuck, Yuu—"

Yushi grabs him and slams their lips together, swallowing Riku's gasp and whatever else he was trying to say. He feels Sion's weak moan against his neck, and then it fades away as he falls completely into Riku, pressing him against the couch, tugging and biting on his lower lip and sucking on his tongue until he can hear Riku moan deep in his throat.

Vaguely, he registers arms wrapping around him — or were they already there? — and it takes him a moment to realise it's Riku and not Sion, because Sion's hands are on Riku, pawing at him — and then they're on Yushi, just as desperate, just as frantic, and then it becomes kind of impossible to tell whose hands are where.

His own arousal comes to him in bursts — someone kissing his neck and finding a sensitive spot, someone scratching at the exposed skin under his shirt, Sion's whine and Riku's stuttered breathing, — but it's the way they all come together that takes his breath away. Riku arches under their joined hands and it's so hot — so beautiful — Yushi cannot look away. Not even when he has to grab Sion's hair to stop him from distracting Yushi, and the groan Sion lets out at that makes him shudder. Yushi catches Riku's eye, something wicked there — and in the next moment they're kissing again, and Yushi gets it when Sion's breathing in his ear gets louder, quicker, as if he cannot help himself.

He feels drunk on power, tugging on Riku's lower lip and hearing the reactions as if in stereo.

"Yushi, please," someone begs against his ear, and it takes him a moment to recognise Sion's voice. "Please, you're so..."

It's a heady thing, hearing him beg, and Yushi cannot resist it — he licks his lips and moves onto Riku's throat.

"Ah, ah, Yu— Yuu-chan," Riku whines, body jerking in search of friction, and this time Yushi does not stop Sion's hand from reaching for Riku, even if it must be awkward with how little space there is.

They make do. They always have.

Riku whines even higher in his throat a moment later, when Sion finally, evidently, gets his hand on his dick. Yushi smiles into the warm skin, pleased, and whispers, "Aren't you so good for hyung? Riku-chan?"

Riku's arms latch onto him, as his body starts shaking and shaking and Yushi has to kiss him - he has to, he needs to taste the cries and the hoarse whispers, and his name, and Sion's name, and everything else that Riku spills as he comes.

He keeps kissing him, slowing down, gentle but not too gentle, as Riku comes back from his orgasm.

He doesn't know what he expects but it's not that — not Riku rapidly turning more aggressive, biting and sucking on his lip, hands roaming over his body, and when Yushi hears a soft noise behind him, Riku leans back a little and even in his dazed expression, Yushi can see a triumphant smirk.

"Did you like that?" Riku whispers, breath caressing Yushi's lips. It takes him a moment to realise it's not addressed to him. "Did you like that, hyung?"

"Riku," comes Sion's hoarse voice.

Riku's tongue darts out, almost licking Yushi's lips. It's such a small thing, but Yushi feels it all the way down to his toes. The constant flip of control is making him dizzy, but he doesn't think he could have it any other way. He doesn't want it any other way.

He tries to catch Riku's mouth, but he's surprisingly agile for someone who must be still recovering from his orgasm, and when Riku latches onto the tip of his ear, Yushi quickly discovers just how sensitive he really is, head falling back, right onto Sion's shoulder.

It won't take much, he realises as Riku trails kisses down to his collarbones — he's been ignoring his own arousal for so long, and now it's all rushing to the surface, every little touch of Riku's mouth and hands are scorching hot, and when he feels Sion's stuttered breathing against his ear, when he feels Sion's hand moving desperately behind him, when he realises just how much Sion likes this, wants this, wanted him, them — he jerks and whimpers and spills against Riku's hip, embarrassingly easy.

Sion's legs clamp against his sides almost immediately, and before Yushi can even blink or otherwise process what's happening, Riku is kissing him over Yushi's shoulder, drinking in every sound Sion makes as he comes.

Shuddering in sympathy, Yushi runs his hands up and down Riku's sides, unable to reach Sion, but trusting Riku to hold him through it. He feels floaty, not really aware of anything apart from the panting on both of his sides, hands meeting and petting and holding, finding each other in spite of the confusion. It's warm, and comfortable, and Yushi presses a soft kiss to Riku's cheek before he thinks much of it.

Riku's eyes meet his, blinking fast, and Yushi is overwhelmed by tenderness he feels. Behind him, Sion's body is sturdy and familiar, and he turns his face to nuzzle into it.

"Yushi..." Sion sounds just as overcome, and it would've broken him, on any other day. But not today, not like this, with their breath mingling, Riku's fingers interwoven with Yushi's, resting on Sion's thigh, — it feels manageable, if not easy. Feels like he's supported on both sides, and like there's nothing terrible in letting it happen.

"I can't believe you were about to— just like that—" Riku mutters, and Yushi has no choice but to kiss him, like it's the easiest thing in the world. Riku sighs and surrenders.

"Ushi is always so full of surprises," he hears Sion's tilting voice, but one of his hands tightening on Yushi's waist lets him know exactly how he feels about what he's seeing.

Yushi wants to try kissing to shut him up next. He wants to figure out how to make him crack — wear him down to incoherent moans, get him to whine and beg and come apart at the slightest touch. He knows it might be a challenge for Riku on his own, but together... he believes they can do it.

Riku looks like he almost understands the unspoken promise in the way Yushi glances back at Sion. Even if he doesn't — it's no matter. There's time, and they've always figured things out, between the three of them.

Yushi closes his eyes, letting their voices and smells and touches wash over him — for once, entirely content with wanting too much.

Notes:

i started this on a flight, writing in a frenzy, and it took me... a while to finish but here it is!! i guess i wanted to try my hand at onriyu pwp, and this is. that. that constitutes a pwp by my standards lol

twt (im locked rn but feel free to request!) // curiouscat

also we made a wish server (with a dedicated fic/rpf channel), join if you want!