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Riku's nerves are shot.
He thinks that's the understatement of the century, actually, considering the bombshell of a question Ryo had walked in with.
He's hunched over his desk late one night, busy trying and failing to hone in on the study book he was supposed to have been looking over weeks ago.
He's interrupted by a quiet knock on his door he almost misses, eyebrows raising when Ryo visibly brightens once he realizes he's still awake.
He's sucking his bottom lip between his teeth, his pajama shirt falling off his shoulder while he stands in the doorway.
Hyung, will you help me? It feels… feels wet down here.
And isn't Ryo just the sweetest little thing?
So damn soft and cute and fragile like a porcelain doll. He always fit so perfectly in Riku's arms, as if he were born for the older man.
He still remembers the first time they kissed, how Ryo had all but melted for it, tiny moans spilling past his parted lips with his legs thrown over Riku's lap.
But there's an invisible line he drew in the sand years ago. One that threatened to be crossed every time Ryo was on top of him, fingers dancing across his chest with his face buried in the crook of Riku's neck and needy hands roaming over clothes.
Riku might've been a pervert—scratch that, he was—but this was different. It wasn't just another first that Ryo had crawled to him to take.
He'd be lying if he said he hadn't imagined it, though, coming around his hand to the picture of his baby brother flushed and spread out just for him.
Stretched around his cock to the point he's dumb and crying, pretty tears beading at the corners of his big doe eyes.
There was an almost sick sort of satisfaction in knowing that Ryo's mind revolved entirely around Riku, Riku, Riku.
His first words weren't 'Mom' or 'Dad', no, it was 'Wee-koo', all adorable and babbled out because he couldn't pronounce the 'R' yet.
Riku just doesn't want to mess this up for him.
Ryo trusts him so much. He's lost count of how many times people have told him their relationship is weird, and he knows.
Riku knows that Ryo relies on him for everything far too much, practically glued at his brother's hip ever since they were kids.
That Riku needs to tone it down with doting on him, that they won't want to be as close to each other when they eventually get married.
It wasn't Riku's fault that Ryo looked at him like that, tugging at the bottom of his sleeve and pouting until he got exactly what he wanted, his cheeks puffing out.
Ryo was spoiled, sure, not that all of it could be pinned on him. So what if he gave in sometimes?
He only caved sometimes. Right.
Maybe that's why putting a ring on someone else's finger seemed like it'd be a total betrayal to Ryo.
And maybe that's also how he ends up here after he gets past his initial shock, laying flat on his stomach in between Ryo's thighs.
Ryo can hardly look at him as Riku tugs his pants and underwear down in one fell swoop, a whimper bubbling up from his throat when the cool air hits his now exposed center.
He instinctively tries to close his legs, pink dusting his joints and his cheeks, but Riku's body stops him from hiding.
"You gotta let me see you, aegi-ya~" Riku coos, tracing comforting shapes into the plush of the boy's thighs. Ryo can't help but lean into it, his hips jumping up in a mix of nervousness and anticipation. "Otherwise hyung can't help."
Ryo whines, his pulse hammering beneath his skin like a second heartbeat. He shifts until his back hits the headboard, heat stirring low in his stomach.
Riku presses a chaste kiss to his left ankle, trailing up before stopping right where he wants him. Needs him. Having Riku this close to his cunt is something dangerous, clear strings of slick leaking freely onto the blanket below him.
He nods after a second, his tongue sitting heavy and useless in his mouth. "O-okay–"
It's all the permission Riku needs to dip past his folds, moving to rub baby circles against his clit. Ryo squeaks, his back arching off the mattress like a bow.
"You're dripping," Riku mutters in awe, eyes trained on every reaction he has. "Y'needed me that bad?"
Warmth blooms on Ryo's face, his lashes fluttering. He reaches one hand out for Riku to hold, smiling when Riku takes it and intertwines their fingers.
Riku's hands are so much bigger than his, nearly fully engulfing Ryo's. "Yeah, I–" he starts, looking away in embarrassment. "I dreamt about it. E-earlier, I mean."
Jesus, Ryo was gonna be the death of him.
Riku's tongue darts out between his lips, his middle finger edging ever lower to tease his entrance. Ryo's free hand cards through Riku's hair, his movements hesitant.
"Did you?" He slowly pushes past that barrier with hardly any resistance—a question, his answer coming in the form of a surprised yelp from Ryo.
He eases inside, curling it just so and stroking his inner walls. "Did hyung touch you like this too?"
"Ah!—" Ryo cries when he adds another one in beside the first, thumbing at his clit. His pussy squelches with each in and out plunge of his fingers, the lewd sounds paired with Ryo's shaky inhales making Riku's dick throb in his pants.
He's sure he's made a mess of his boxers, but he's properly fingering Ryo now, ignoring his own arousal to focus on him instead.
Ryo's fingers tighten in his hair, his face screwed up in pleasure. Riku wishes he could take a picture of him and hang it up on his wall.
"Does it feel good?" He purrs, gently scissoring his fingers. "You can tell me." He plants a feather-light kiss to his sensitive nub, and Ryo keens.
"Yesyesyes, Ri- Riku—" Ryo shudders. A hand moves down to curl around his wrist, with Riku looking up at him. "Hyung, mmn–" he swallows, stopping and catching his breath to find what he wants to say.
Riku gradually pulls the digits out with a loud, wet pop, the sudden emptiness pulling a frustrated sound from Ryo. "P-please, hyung, 'wanna feel you in me."
Riku's expression softens. "Are you sure?" he asks. "I don't wanna hurt you."
Ryo shakes his head, squeezing Riku's hand. "You w-won't, it's okay," he says. "I… I trust you."
Oh.
Oh.
"Okay," Riku exhales, shifting them so he's sat up and pulling Ryo towards him.
He at least has half the mind to put a pillow under Ryo's hips, being more careful than he probably needs to be. "Yeah, yeah, okay. But promise me you'll tell me if it's too much."
Ryo nods. "I will."
Riku pushes his pants down enough to free his aching cock, taking the precum already welling from the tip and dragging it down his length.
He sighs, cupping the underside of Ryo's knees and grinding against his slit. The steady, methodical roll of his hips has the head of his dick catching on his clit.
Ryo mewls, his palms resting on Riku's shoulders while his legs hook at Riku's waist.
"Ready?" Riku whispers.
"Mhm."
Riku only distantly registers the fact that the 'line' he drew was bound to unravel when he's sliding into Ryo's warmth, every single ounce of his strength keeping him from sheathing himself fully inside.
Ryo tenses, his chest heaving, and he grips the front of Riku's shirt for purchase.
Riku has the thought that it'd be laughably easy to break Ryo if he wanted to right now, ruin him for anyone else that had the nerve to stare at Ryo like they had a chance, however desperate and possessive that sounded.
He knows Ryo would take it, all pliant and precious the way he gets with Riku. He's so tight it borders on painful, clenching and unclenching around the head of Riku's cock.
Ryo hiccups, his eyes squeezing shut. "Hyung-ah—"
"I know, aegi." Riku snakes a hand down, rubbing his clit to get him to calm down. The younger relaxes, letting Riku slip in another thick inch. "You're okay, I've got you."
Riku spares a glance down to see he's barely halfway in; the sight of Ryo's pussy molding itself to fit him is one his dreams couldn't ever top. Wouldn't ever.
A thin sheen of sweat covers Ryo's body, glistening under the light of Riku's bedside lamp.
Fuck, he wasn't going to last very long.
Riku caresses Ryo's jawline, grabbing his chin to make him look at him. "I wanna see you, pretty."
Ryo complies right as he finally bottoms out the rest of the way, his mouth dropping open in a silent gasp and his dark pupils blown wide.
Riku gives both Ryo and himself a minute to breathe together, the air between them heavy with tension. "G-good?" Riku stammers out.
"Yeah. S'good," he mumbles. "Y'r so big, hyung." He doesn't have to say will it even fit for Riku to get the point, leaning down to touch Ryo's forehead with his own.
Their faces are mere inches apart, Ryo's nose brushing his own. Ryo squirms impatiently anyway, looking so beautifully disheveled when Riku hasn't even fucked him yet. "K-kiss me, please—"
The pace Riku sets is slow and deep, his attention fixed on him for any sign of discomfort. Ryo feels like he’s being pulled apart at the seams and put back together again, his soft moans swallowed up by Riku leaning in, his mouth covering Ryo's.
Riku bites at his bottom lip, licking into his mouth once Ryo parts for him like loving Riku is etched into the very fabric of his being.
Riku's lips leave his for a moment, his tongue flattening over Ryo's collarbone. He leaves marks along the way, sucking and licking a long stripe up the center of his throat.
A shiver runs up Ryo's spine, the boy tipping his head back to give him more room. He guesses he's found his sweet spot when Ryo writhes, his nails clawing down Riku's forearms.
Riku puts one of Ryo's legs over his shoulder, angling his thrusts to grind into that same spongy spot over and over again.
“Right there?” Riku works his clit between two fingers, pinching and flicking with practiced precision. Ryo can only moan, a complete mess of sweaty limbs tangled up in Riku's. Riku pulls back out halfway and thrusts back in, burying himself to the hilt with a hiss.
“Come for me, aegi,” Riku coaxes, nipping his earlobe. And that's all it takes to do Ryo in, the band snapping. The only warning Riku gets are little dazed, unintelligible whines of coming and so c-close, 'Ri, pleasepleaseplease and I love you.
He trembles, his cunt spasming wildly around Riku's cock while Riku rocks his hips into him, drawing his orgasm out. “There's my good boy. You just needed hyung to take care of you, huh?”
Ryo soaks up the praise like a sponge, his legs twitching from the aftershocks. Riku's composure is on the verge of collapsing, his thrusts speeding up and getting sloppy as he chases his own release. Riku tries pulling out, dimly aware of his lack of a condom, but Ryo's protest is quick, his heels digging into Riku's back.
"Uh uh, hyung—" Ryo pleads, his voice cracking. "D-don't, you can… you can cum inside me."
And oh god does he almost finish from that alone. Riku lifts up to hover over Ryo, wiping drool off the corner of his mouth. "Say it again, Ryo. Tell hyung how much you want it."
"Need it, hyung," Ryo says. "M-make me yours."
Both of them choke on a moan as Riku fucks himself all the way back in, the wet slaps of their bodies coming to a halt. Riku's hips stutter, filling Ryo up so deeply with his cum that his arms jerk. He pants, pressing a lazy kiss to his lips and stilling inside him.
Riku flops on top of Ryo, boneless and heavy. Both of them are panting and tired, Riku nuzzling into Ryo. "That was o-okay, right?" He kisses Ryo's cheeks, then right on top of his eyelids, heart swelling when Ryo giggles.
Ryo grabs his hand again, smiling. "More than okay, 'Ri."