Archive of Our Own ^beta

Chapter Text

“Isn’t he so cute, Osamu? What happened?”

If anyone ever were to ask how they got here, Osamu’s answer would be I have no fuckin’ clue. Atsumu’s the one famous for the overdramatics and potty mouth, so Osamu knows that if he has been freaking out for the last few days then it’s a damn good thing they’ve managed to evade his twin so far. 

He has no idea how it happened and Rintaro is at just as much of a loss. The only explanation is that the spellbook that con-artist Kuroo sold them was fake as fuck, because instead of triggering Rintaro’s heat (he’s a few months off suppressants and damn they both miss heat sex), they cast spell from a completely different chapter. 

The spell in question? Well, twenty-seven year old married alpha Osamu meet sixteen year old, virgin baby alpha Osamu. Pre-Rintaro, pre everything really. 

When younger ‘Samu was unfortunately isekei’d into 2024, they spent the first twenty-four hours trying to calm him down and explain what had happened, before disturbing Aran, who went to speak to Kita at his farm and drive back so their old senpai can try and sort out this mess.

It’s day four, Osamu has already threatened Kuroo’s entire familial bloodline and demanded that he reverse the spell, to which Kuroo shrugged, explaining that he’s no witch, just the salesman . 

Thankfully this is where Kita came in, and he’s left Aran in charge of farmwork while he spends hours studying spell reversals. As much as Osamu was in awe at younger Osamu’s delight at realising he owns not one but two onigiri restaurants, he’d very much like to get him back to his own timeline.

(Plus, he’d really like that damn heat sex already. They have baby making to be focusing on!)

Speaking of heat sex, Osamu loves Rintaro, they bonded right out of highschool and eloped not even a year after. It was natural for them, they’d been glued at the hip since childhood and Osamu can’t imagine a life without his mate. However, he’d really been testing his patience (and morals) since the younger ‘Samu appeared in their lives.

It’s no lie that Osamu had a crush on his omega since middle school so of course, this ‘Samu has a great big crush on him too. And at sixteen, Osamu wasn’t the most subtle, nor the best at reigning in his scent. 

They first noticed it when Rintaro woke up on the third morning and bumped into ‘Samu on the way to the bathroom. Rintaro, wearing nothing but a pair of boxers. Rintaro, who’d just sucked Osamu’s dick and still had some slick between his thighs he’d yet to wash off. Rintaro, who preened at the attention and winked when ‘Samu’s scent spiked in arousal and his cheeks had reddened – so unused to seeing his best friend in such a state. The jealousy was even more prevalent, the young alpha posturing without even realising it, clearly unhappy with ‘someone else’ claiming what his alpha knows is rightfully his.

Young ‘Samu is awkward and respectful enough to fumble through an apology without acting on his instincts and race back to the spare bedroom, but the way his boyish alpha scent spikes doesn’t go amiss and it soon bleeds to the rest of the apartment, unsettling the elder Osamu and turning him possessive. Rintaro seems to treat this like a game and he spends whatever time they have in the apartment together strutting around in a bath towel, or doing things like invading ‘Samu’s personal space wherever possible just to see him squirm. He riles the two of them up on purpose, and Osamu makes it known t hat Rintaro is a taken omega. Which is ridiculous, it’s only another version of himself in the apartment.

It’s fine, Osamu thinks, it isn’t cheating if it’s himself, and Rintaro wouldn’t do it if he truly minded but fuck. Fuck it all. Osamu needs his head checking because the thought of his partner getting his brains fucked out by the younger version of himself is so fucking hot, he’s popping a half-chub everytime they’re in the same room.

And at twenty-seven, you’d think he’d be better at controlling his arousal. If Rintaro is anything, he’s perceptive as hell.

Which is why he’s here now, with younger ‘Samu in their apartment kitchen. He’s standing behind him, chin hooked on the teens shoulder, both hands on ‘Samu’s waist, drawing delicate circles over the fabric of his shirt.

“We should keep him forever.”

“I uhhh– yer just like my Rin, have I said that?” ‘Samu awkwardly laughs, deflecting. He’s tense, looking at big Osamu with grey eyes that seem to say a mixture of is this okay? And help me.

“ My Rin, ” Rintaro repeats, hands slowly trailing up ‘Samu’s waist. “Adorable.”

“ Rin, ” Osamu warns, unintentionally growling his omega’s name. “Stop bein’ a menace and let him go.”

Rolling his eyes, Rintaro gives ‘Samu’s waist a playful pinch before peeling away from him and standing upright. “No fun…It’s not as if you both don’t want it,” he says simply. “It stinks of alpha here, neither of you know how to control your scents.”

When both Osamu’s seem to flush and look away, the omega smirks and continues.

“You both don’t think it’d be hot? I know you were desperate to lose your virginity in highschool to me babe.”

Spluttering, ‘Samu looks between the mated pair with wide eyes like his biggest secret has just been discovered. “I– what, yer not serious are ya? Yer both mated and married.”

“Deadly serious, we’re not opposed to a third.” Rintaro looks at Osamu with a questioning gaze in his deep green eyes. “It doesn’t count if it’s technically the same person, does it?”

“‘M goin’ to put ya to work in the kitchens if ya keep harassin’ ‘Samu, Rin,” Osamu grumbles from where he’s finishing the pot of coffee. “We aren’t discussin’ the logistics of takin’ advantage of ‘Samu– sorry , uh– me.”

“Boring.”

“Ya wouldn’t be takin’ advantage!” ‘Samu hurriedly – and unexpectedly, says. Osamu, with the pot of coffee and three mugs, malfunctions and turns to look at his younger self. Rintaro doesn’t seem to react much, only looking incredibly pleased with himself at the revelation. “I mean, it’d be consensual if that’s what yer worried about– And…Yer right I suck at this alpha stuff, controllin’ my scent and all. I’ve wanted to…To sleep with Rin since I presented.” He scratches the back of his head, realising he’s rambled and said too much already. “Shit, if I’ve made it awkward, maybe I can uhh— Aran-kun might let me stay with him! Or I can talk to Kita-san!”

“Shhh,” Rintaro coo’s quietly, glueing himself back to ‘Samu, his arms draping around his neck. Calming pheromones are released into the air, and ‘Samu’s nostrils instinctively flare to drink in as much of Rintaro’s sticky sweet cinnamon as he can. “Don’t work yourself up. It’s only me, and between me and you, we start dating when we’re seventeen, so you don’t have long to wait, cowboy.”

“Rin…” Osamu warns in a low voice, his alpha beginning to excite as his scent bleeds through his patches into the air around them. Strong and musky, filled with want and none of the jealousy he’d expect watching his mate lope his arms around another alpha in front of him. “Careful.”

“What?” Rintaro innocently asks, cocking his head to the side and blinking across at his husband. “You’re okay with it, our little pup wants it, why not?”

Osamu seems to malfunction for the second time that morning, his mind working a mile a minute to deduce the ethics of the entire thing. He wants it, ‘Samu definitely wants it (if the growing bulge in the front of his pyjama pants is anything to go by) and there’s a faint smell of Rintaro’s slick in the air that both alphas eyes seem to glaze over at as they each inhale sharply.

“I uhh,” ‘Samu breaks the tense silence, staring down at the floor with his cheeks coloured in embarrassment. “I don’t know what I’m doin’ you guys might hafta…Take the lead. I guess. But don’t be embarrassin’ about it.”

“It’s okay, baby,” Rintaro says against his ear, his hands massaging ‘Samu’s pecs. “I remember what he was like back in highschool, we got you, we just want to make you feel good, isn’t that right ‘Samu?”

“Fuck it–” older Osamu declares, slamming the mugs back down onto the countertop, his eyes wide, cock stirring in his sweatpants. “If ya wanna…If ya wanna stop, or change yer mind, we stop this, and ya go to Kita-san’s until we find a way to send ya home. Got it?”

“G-got it–” ‘Samu tries to respond, his eyes rolling closed as Rintaro attaches his lips to the side of his neck and kisses down to his shoulder. “O-oh…This is…”

“Rin, cut it out a sec. I’m tryin’ to lay some ground rules.”

“No fun,” he says with a smirk, dropping a peck to ‘Samu’s neck before drawing back, hands still on his shoulders massaging gently. “You’ll speak up if you want us to slow down, won’t you?”

‘Samu gulps, feeling dizzy. “Y-yeah, I promise…I just want…Want ya to touch me again… Darlin’ ” he says the pet name a little shakily, like he’s unsure of himself. 

“Aww, isn’t he the perfect alpha?” Rintaro jokes, batting his lashes at Osamu. “The things we’re going to do to you…”

With breakfast abandoned, the trio slip into their respective rooms, younger ‘Samu hopping into the shower to get clean, with Rintaro making him promise not to touch himself in there, while the couple are quick to rearrange their bedroom nest for a space for a third.

“Ya don’t think we’re goin’ to hurt him, are we?” Osamu awkwardly says as he removes his scent patches, hyper aware of the shower shutting off down the hall. “Or fuck up the timeline, I don’t know how any of this works.”

“No? And I’d say the timeline is pretty messed already, I don’t think taking sixteen year old you’s virginity is going to do any more harm,” Rintaro says with a quirk of his brow, fluffing up the fresh pillows and swiping his wrists across them to scent them. “If you’re uncomfortable, I’m not going to make you,” he tells his mate, abandoning his task to stand before Osamu, wrapping both arms around him to pull him into a warm embrace. “And don’t be jealous, this version of you is the only alpha for me.”

“I ain’t jealous,” he says gruffly, stretching to kiss Rintaro’s forehead.  “...I wanna see him come apart just as bad as ya do…Maybe I could…”

“You want him too?”

“I mean, don’t look at me like that!” He huffs, pushing Rintaro away when his mate starts to cackle. “Ain’t it just like masturbatin’ with extra steps?”

“Hmmm… Sure, ” Rintaro says through his laughter, pulling a grumpy Osamu back into his body. “Whatever helps you sleep at night, alpha. If it’s any consolation though, it’s hot as fuck. I want to see you two go at it too…I just didn’t think you’d be into it.”

“I don’t wanna scare him off or anythin’.”

“Then let’s ease him into it, make sure he’s comfortable and happy, drunk on omega once he’s had a taste of me, and if the moment feels right , go in for a kiss or two, I feel like he’ll open up to you.”

“God,” Osamu moans, Rintaro’s hand now palming the front of his sweats. “I love ya so much Rin.”

Young ‘Samu’s scent is clogged with anxiety once Rintaro and Osamu exit the bathroom post-shower. Osamu is hard as a rock from where Rintaro rubbed his ass against his dick in the cubicle without letting Osamu touch (or come) and his pent-up frustration is evident in the way he barely bothers to towel dry his hair before settling on the edge of their bed in just a towel that tents at the front. 

Rintaro also doesn’t bother with clothes, his towel hanging low on his hips, the light dusting of his trimmed pubic hair poking out the top. Even with the bedroom door slightly ajar, ‘Samu knocks anyway, fist rapping lightly.

“Uh, hi,” he says shyly as he stands, fully clothed, in the doorway, Rintaro opening the door fully and leaning against the frame to drink up his appearance. He’s always been a little stocky, but he was lankier and carried himself a little more awkwardly in youth – an air of innocence about him that Rintaro wants to completely destroy.

“Hey,” Rintaro responds in a low voice, taking ‘Samu’s wrist in his hand to guide him into the bedroom. “You’re too cute, come here. Get comfortable in the nest.”

Hesitantly, ‘Samu lets Rintaro lead him into the bedroom and over to the bed where their pillows and blankets have been neatly arranged for him to sink into. 

“Looks nice,” he comments, lowering himself down onto Rintaro’s side of the bed. He inhales the soft, smoky scent of his future mate and struggles to suppress his whine at the soft material against his skin. “What…What happens now?”

“Well,” Rintaro says, climbing in the nest after him. “I’m going to warm you up a little, show you the ropes, teach you how to make me feel good so you can make highschool me happy–” Both Osamu’s seem to flush at that, always so shy even with age. “Then when you’re nice and worked up, Osamu is going to join. Would you like that?”

“Me…With me?” He asks incredulously, confused as though the possibility hadn’t crossed his mind.

“Only if ya wanna,” Osamu adds from where he sits at the bottom of the bed. “I ain’t goin’ to do anythin’ ya don’t want.”

“S’pose it’s just like masturbatin’ with extra steps,” ‘Samu adds, parroting what his carbon copy had said only minutes ago. “I’ve never…I mean I’ve used fingers on myself but I don’t know if I could take an alpha. ”

“Don’t worry,” Rintaro purrs, now lying beside ‘Samu – his hands playing with the top hem of his shirt. “You can both fuck me together – ” he drops his voice to a whisper. “We’re going at your pace. If you’d rather top, that’s all we’ll do.”

‘Samu perks at that, the tips of his ears reddening. “I don’t…I thought… Shit, can ya kiss me?”

The couple laugh, and then Rintaro is leaning in, his gaze flickering between the two Osamu’s, his grin widening when Osamu shuffles on the bed, hand snaking under where his towel tents.

Suddenly they’re kissing, Rintaro’s hand on his jaw, his tongue teasing the seam of ‘Samu’s closed lips to coax him into opening up.

“Good boy,” Rintaro hums against his lips. “Mhmm, you taste nice.”

‘Samu is short circuiting, looking like he’s mentally imploding from his crush kissing him…His crush kissing him in nothing but a towel. It seems to suddenly become real to him and all he can do is lie there, stiff as a board, as Rintaro kisses his slightly parted, still lips.

With a giggle, Rintaro finds ‘Samu’s hands and guides them up to his waist. 

“I uhh…Ain’t the best at this,” he admits, looking away until his eyes meet the older version of himself. Osamu creeps along the mattress until he’s beside Rintaro, kissing along his omegas arm up to his shoulder. “...If ya couldn’t tell.”

“You don’t have to do anything, lie back and let me help.”

“I kinda thought you’d be a bit of a princess, highschool you sure is lazy enough. Likes me to do everythin’ fer him.”

“Things don’t change much.” Osamu risks with a grin, earning a light elbow from Rintaro.

“Sometimes an omega takes charge,” Rintaro tells ‘Samu, hands working their way under his shirt. “Sometimes they lie back and let their alpha show them who they belong to. You happen to enjoy both, greedy little alpha.”

Overwhelmed from the barest touch, ‘Samu starts to groan, eyes lidded, as Rintaro’s hands snake up his body to squeeze his chest. There’s less fat on them as he has as an adult, but Rintaro massages his pecs regardless, his thumbs brushing ‘Samu’s large, sensitive nipples until they harden and he starts to pant.

Osamu keeps his hands planted on Rintaro’s waist, kissing his omegas neck as Rintaro gropes ‘Samu, shifting to straddle his hips, his towel slipping to the side, revealing a long sliver of inner thigh – sticky with slick.

‘Samu’s eyes fly to it like a beacon, his scent wild, hands reaching up to touch, until they’re lightly smacked back down to the bed.

“No touching, not yet,” Rintaro chastises. “Why don’t I give you something to look at instead?”

‘Samu nods hurriedly, just as Rintaro drops his towel the rest of the way and discards it across the room.

His pussy – freshly waxed, is on display, already wet, and he gently rolls his hips and grinds his crotch down to where ‘Samu’s bulge sits in the front of his sweatpants. Adorably, the baby alpha’s eyes practically bulge out of his skull as he stares at the pristine mound between Rintaro’s legs. His breath hitches when Rintaro spreads his pussy lips with two fingers, flashing him his hole. Rintaro gathers up slick on his finger before pointing it towards ‘Samu, beckoning him to suck the digit into his mouth. 

“Taste me, I know you need it alpha.”

Greedily taking his finger into his mouth, ‘Samu laps at the slick like his final meal, whining a little when Rintaro grabs both of his wrists and pins them above his head against the headboard. 

“He’s good, ain’t he?” Osamu murmurs against Rintaro’s shoulder – where he kisses along it to his neck, teeth grazing him lightly. “Was I always like that?”

“Probably,” Rintaro tells him with a teasing glint to his eye. “Unfortunately I was just as stupid, so I didn’t get to enjoy it…Until now.” Rocking his hips, he slides his wet pussy along the waistband of ‘Samu’s sweats until he pries his finger from ‘Samu’s mouth with a lazy smirk.

“I’m kinda…” ‘Samu trails off, looking to the side.

“What’s wrong?” Rintaro coos, leaning back down to nip and suck on his earlobe. 

“ Rin ,” he whines cutely, drawing out the n. “If ya keep doin’ that I’m goin’ to come. Nobody’s touched me like this before.”

“Adorable,” Rintaro comments, “let’s not waste any more time then. All you need to do is warn me if you’re close, okay big boy?”

“I can do that…” ‘Samu responds, voice strained. “Ain’t goin’ to be long at the rate yer goin’ though.”

“That’s okay,” Rintaro tells him, hand snaking down his body to palm ‘Samu through his sweats – ‘Samu’s brain immediately short-circuiting as he gasps out loud. “It’s a good thing you can get hard again quickly.”

 Osamu, still peppering kisses on Rintaro, his fingers rubbing his omegas nipples, watches with partially lidded eyes, his erection pressing into the small of Rintaro’s back. 

“How many rounds ya goin’ fer Rin? Yer goin’ to drain him dry,” he mutters, pinching Rintaro’s nipple and watching as the omega struggles to stay nonchalant. 

“We might not have long left together, maybe we can teach you a thing or two. Younger me is easily impressed. ” Rintaro tells him as he takes out ‘Samu’s cock. “Lift up–” he says, smacking the sides of his thick thighs, ‘Samu lifting his hips so Rintaro can strip him of his bottoms. As he does so, Osamu resumes his kisses down his neck, his hands firmly planted at his hips. “Let’s give him something to remember us by,” murmurs Rintaro, groaning lowly at the feel of Osamu nipping across his mating scar.

“Y’know, I’ve uh, been lookin’ up how to please omegas…Before comin’ here. Ya don’t seem easily impressed,” ‘Samu nervously admits, his eyes bulging as he watches Rintaro take his thick cock in his hands, mesmerised at the long pale fingers caressing him. “That’s hot,” he voices a little too loudly, making both Rintaro and Osamu chuckle.

“Every teenage omega wants cock,” Osamu says to his younger self, fingers dipping down to spread Rintaro’s pussy lips while he watches ‘Samu’s gaze drop down to where Rintaro’s pussy drips onto his thighs. “It’s eatin’ pussy that this one’s picky with. He’ll come twice and make ya stay down there ‘til he’s satisfied. I usually take an aspirin fer the achy jaw.”

Rintaro rolls his eyes, slowly gathering up slick onto his fingers to coat ‘Samu’s dick with – ‘Samu paling like he might pass out from the sight of that alone. “He’s dramatic, don’t look so scared. I’ll teach you, handsome.”

Redder than a tomato, ‘Samu can only nod as he’s given the best handjob of his life, his hands balling into fists on the mattress as he lies rigid, fending off a premature orgasm. Gotta keep his cool, can’t embarrass himself in front of Rintaro – who has only gotten more beautiful with age, the teenage baby fat on his face swapping for a sharp jawline and chiseled cheekbones like a model. At some point, he opens his eyes at the sound of a soft moan vibrating against the skin of his cock and he watches with teary, lidded eyes as Rintaro is fingered open on top of him – his older self pistoning three thick fingers into his cunt as slick pours down on him like a fountain.

“Ya keep that up…” He mutters with a gasp, head tossing back into the plush pillows. “And I’m goin’ to come on ya.”

Rintaro is panting, omega scent flooding the room, as he bends down to give ‘Samu a messy kiss on the lips – Osamu’s fingers still fucking in and out of him. He lies across ‘Samu fully, his pussy lips sliding deliciously over his cock.

“I’d like that,” he tells him between kisses, ‘Samu trying his best to follow the omega’s lead, nipping his lip, sucking on his tongue, avoiding clicking their teeth together. “You’re so messy,” he comments, licking up the line of drool that had slipped down ‘Samu’s chin during their makeout. “I’d like you to come somewhere else today though, what do you think?”

‘Samu darts up then, almost headbutting Rintaro in surprise. He adorably looks to Osamu, like he’s asking permission. 

“I guess what’s my omega is technically yer omega,” Osamu says with a slap of Rintaro’s ass. “I’d do as he says. I’m takin’ his ass.” He already has the bottle of lube in his hands, warming it on his fingers before stroking his cock to coat it.

“Both of you can prep me then,” Rintaro says with a stretch, dropping one final kiss to ‘Samu’s neck before easing off him and plopping down onto the bed beside him, his legs stretched wide. “You should do this to me when you’re back in your timeline,” he whispers against ‘Samu’s shoulder, tweaking a nipple playfully. “I’ll go wild for it.”

“This is all so overwhelmin’” he sheepishly responds, avoiding eye contact as he watches Osamu settle between Rintaro’s spread thighs.

“Watch and learn, you’re an alpha so wanting to please and fuck your omega is all natural instinct. You’ll lose yourself in it soon.”

“I trust ya…”

“Good, come feel me,” Rintaro says as ‘Samu is guided up by Osamu, the two of them sharing an awkward look before older Osamu is handing him the bottle of lube.

“One finger to start, even though he’s loose as anythin’” Then, he leans in against ‘Samu’s ear to whisper. “Try eatin’ his pussy a little too, he’ll give ya heart eyes fer the rest of the night.”

With a shiver, ‘Samu does as he’s told and coats his index finger in the lube before slowly sinking it in to the first knuckle, his cock twitching from where it bobs in the air. Like a puppy doing a trick for the first time, he looks at both Rintaro and Osamu for approval before Rintaro stretches two long legs out to curl around his back to keep him closer, his heels digging into ‘Samu’s baby fat.

“Think he wants to feel ya.”

“O-okay,” ‘Samu obliges, pushing his finger the rest of the way and watching as Rintaro’s face scrunches in pleasure. “This ain’t nothin’ like porn.”

“It’s better,” Osamu breathes against him, his own cock straining and desperate to knot in something warm and wet. For a moment his gaze lingers on ‘Samu’s ass. Still muscular from volleyball and the gym but with enough fat to grab onto. The temptation… Snapping out of his reverie, he gently pushes his teenage self’s head downwards. “Don’t forget his pussy.”

“Dunno what I’m doin’,” ‘Samu admits as he settles down and watches in awe as Rintaro’s cunt glistens prettily on display. 

“Suck his clit, make sure ya hollow yer cheeks out, and lick up and down here. Ya can put yer tongue inside too. Just do whatever makes him moan loudest.”

“What’re ya’ goin’ to do?”

“ Watch. ”

‘Samu wastes no time in eating out Rintaro’s cunt, his eyes glazed over and his alpha grumbling happily at the first taste of slick, the sound of Rintaro’s moans reverberating around the room music to his ears. He makes a mess of his meal, slick dripping obscenely down his chin and onto the bedsheets. Obsessed with his little clit, ‘Samu tongues at it, pulling back the skin to suckle it, greedily drinking up the sweet sounds of Rintaro’s moans, his omegas hands fisting roughly in his short silver hair.

So blissed out, he barely registers when two firm, calloused palms spank and knead his ass as he instinctively rocks back against them.

“Ya like that?” He hears himself say as he’s roughly smacked again, his own cock jumping and spurting precome from where it’s trapped between his stomach and the mattress. He whimpers, but continues going down on Rintaro, the omegas thighs caging him in until he can barely breathe.

If he dies like this, he’ll die happy.

Adding a second finger alongside the first, he manages to scissor Rintaro open, even though it’s a little awkward – his inexperience evident. Rintaro doesn’t seem to mind, the omega grinding his throbbing cunt down onto his mouth in a silent demand for more. And ‘Samu, in heaven, tongue-fucks him with no complaint. He never thought slick could taste so good, be so addictive, never thought he’d want to live between someone’s thighs. The thought that it’s his crush – his Rintaro, makes him all the more desperate as he starts to hump the mattress in tune with the long licks up his cunt.

Suddenly, there’s a possessive growl from behind him and a hand fists in his hair, roughly pulling him up so he faces Osamu. The alpha stares him down, gaze flickering to ‘Samu’s fucked-out expression – the alpha so deep in bliss he barely registers what’s happening. And then, a hand wraps around his cock – his own, slightly larger and more scarred hand. The hand of a chef and not a highschool volleyball player. Osamu fucks his fist over him, hungrily licking up the slick from ‘Samu’s chin and neck while Rintaro watches on, two fingers still stuffed in his ass.

 “Do you want to be a good boy?” Osamu asks him, eyes dark and lust-filled. “Wanna fill him up with me?”

“Y-yeah,” ‘Samu gasps, glancing down to where their cocks sit flush, Osamu jerking the both of them off together. “...Is this weird?”

“Feels good?” Osamu asks him, peppering his neck with kisses, biting and sucking bruises into his skin. 

“ So good.”

“Then it’s fine. Don’t think too much, just feel.”

‘Samu nods, bucking his hips up into Osamu’s fist, revelling in the feel of the alpha cock rubbing against his own. “...Yer dicks big .”

Osamu snorts, nipping at the side of his neck. “Yeah we get a bit of a growth spurt after graduation. To Rin’s delight.”

“He is somethin’” ‘Samu comments, twisting to look where Rintaro is laid out, eyeing them closely. “I think I’m in love.”

“We are,” Osamu murmurs, kissing him once more on the lips and watching as ‘Samu flushes and ducks his head, his cheeks redder than ever. “Hey, don’t ya want yer omega?”

Opening up like a flower, ‘Samu perks, his alpha desperate and clawing for a taste all of a sudden. He clumsily grasps his cock and lets Osamu guide him forward, his older self’s hands wrapped tightly around his shaft.

“He’s wet enough, ain’t he?” Osamu asks him, ‘Samu nodding and groaning so loud and sweet when he slowly pushes the head inside.

There’s an explosion of sensations behind his eyes as he squeezes them shut and pushes in the rest of the way, feeling Rintaro tighten around him. It’s so much that when he bottoms out he sits and fights a mental battle not to come then and there. That, or jackhammer into the omega’s cunt until he’s breeding and knotting him within thirty seconds.

“Doing so well for us, ‘Samu,” he hears Rintaro whisper sweetly. “Finally going to fuck your very own omega.”

When he moves – the first shallow thrust, he almost sobs at the overstimulation. Osamu is behind him, guiding his hips and littering his shoulders with small purple hickeys.

“This is so— it’s so hard n0t to come. It’s wetter than I thought… Wanna– ”

“Not yet, puppy,” he hears Osamu in his ear. Hearing puppy in a lower, huskier version of his own voice makes his cock twitch inside Rintaro with the urge to fuck into him harder and faster. “Go slow and savour him.” His ass is spanked and he’s barely able to contain his whimper before slowly drawing out of Rintaro, looking down as his cockhead is neatly nestled between dripping folds. “And back in.”

Barely able to contain himself, ‘Samu slowly eases his cock back in, watching as Rintaro’s slick pussy sucks him up, the omega pulling him in, clenching and keeping him buried snug. Inner alpha going insane, his muscles strain as he slowly starts to pound into his pussy, glancing between the couple for their approval. Rintaro reaches up to pat his thigh, rubbing soothing circles.

“Our puppy is a fast learner.” ‘Samu whimpers at Rintaro’s praise, baring his fangs to inhale the soothing scent of Rintaro as he blossoms beneath him. One particularly deep thrust has Rintaro arching off the bed, his moans reverberating around the room and ‘Samu growls low and possessive, planting both hands on his hips to fuck back at the same angle. 

“Steady,” Osamu warns, instinctively bearing his own fangs. “Go gentle. Yer not comin’ yet.”

Pliant as ever, ‘Samu does as he’s told, but they can both see all he wants is to lose himself in the feel of it, to let his alpha take control and fuck, mate, breed, the pretty omega underneath him.

After several minutes of him slowly thrusting in and out, barely containing himself, Osamu abruptly slaps his ass and Rintaro starts to sit upright to change position.

“How’d ya want him?” Osamu asks, “ya wanna ride him?”

“Let him fuck up into me,” Rintaro tells his alpha, guiding ‘Samu back down so they switch positions, the young alpha looking around wide-eyed and overwhelmed from all the scents and sensations. “I want to feel you too, big ‘Samu.”

“Why am I little ‘Samu?” ‘Samu grunts, watching as Rintaro clambers back onto him, bending forward until their faces are inches apart. Behind, Osamu gets into position, lining his lubed-up cock with Rintaro’s hole. He gives his ass a hard spank, grinning when slick drips out messily onto ‘Samu’s cock, just as Rintaro lines it up to sink down onto it.

“Fine,” Rintaro says cheekily as he starts to ride him slowly. “You can be big ‘Samu, but he’s bigger ‘Samu–”

“Too much talkin’” Osamu complains from behind him, spanking him as he slides his cock into the base until Rintaro is gasping at the fullness of the both of them in each hole, his pussy aching. “Lift yer hips up to meet his, you’ll get a feel fer the rhythm.”

Grasping both of Rintaro’s hips, ‘Samu wastes no time in rutting his hips up into him, setting a brutal pace. Sandwiched between the two of them, Rintaro is rocked back and forth off both their cocks, his moans quickly turning incoherent as he’s fucked hard and fast, barely graced with a moment to breathe. 

“Ya like that?” Osamu hisses, fisting a rough hand in Rintaro’s hair and yanking it back. “Like bein’ fucked like a nasty slut? Want our baby to fuck a litter into ya?”

Rintaro only moans, clenching down instinctively onto ‘Samu as he ruts his hips up into him, the young alpha losing himself to his omegas scent and the slick dripping out of him like a fountain. So wet. ‘Samu gazes at him – eyes watery and glazed over, his fangs bared, as he watches jolt up and down off his cock, both his hands planted on the omegas hips so hard he bruises them. 

“‘M gonna…” ‘Samu moans, tensing when Rintaro starts kissing messily along his neck and jaw. “Don’t…Rin– I think I’m gonna knot!”

“Shhh,” Rintaro says as he bounces on his cock, grinding down on it. In spite of his words, the young alpha continues to fuck up into him desperately, chasing that high. “Hold off a little longer, I know you can do it.”

Osamu continues fucking his ass, groaning and tossing his head back, he pulls out completely before roughly slamming back in and jolting Rintaro forward. He’s close, just the sight of his younger self slamming into his omega enough to tip him to the edge.

“Gonna come…Rin,” he warns with a drawn out moan. When Rintaro rocks back against him, he feels his building orgasm finally unload and he spills inside Rintaro’s ass, the knot not quite catching – the perks of being older and more experienced in that he can control it better. He fucks Rintaro through it, draping himself on his back and grinding his cock in deep. When he reaches around between ‘Samu and Rintaro’s sweaty bodies, he finds Rintaro’s clit and pinches it, rubbing the nub between two shaky fingers.

“ Riiiiin, ” ‘Samu moans from beneath them, teeth bared and grazing Rintaro’s neck as he desperately humps him, his senses going haywire with everything happening. All he can think is knot, fuck, mate, please omega, make omega come and he quickly loses himself in it, fucking into Rintaro at a near-inhuman speed. “I’m gonna…Can’t hold it anymore, gonna knot ya so good…I’m tryin’...Want it so bad…Can’t stop, ‘m sorry.”

Cupping his cheeks in his hands, Rintaro gazes into his eyes right before he comes with two of Osamu’s fingers playing with his pussy. He clenches down hard on ‘Samu’s cock as he squirts suddenly, moaning out for his alpha’s. It’s enough for ‘Samu to finally come along with him, his knot swelling and catching on Rintaro’s inner walls as he comes with a loud wail.

‘Samu’s orgasm seems to go on forever, long after Rintaro has finished and collapses onto his chest on top of him, Osamu pulling out to settle down beside them both. Embarrassed, ‘Samu covers his face as he grinds his cock up into Rintaro’s pussy, gasping for breath as he fills him up. 

When they all finally catch their breaths, Osamu stroking Rintaro’s hair from where he’s planted himself over ‘Samu’s chest. ‘Samu lies rigid, ducking up to hide his face in the crook of Rintaro’s neck. His cheeks heating at the way he’d accidentally knotted him after he had promised he wouldn’t yet – it felt too good, he couldn’t help himself – not when Rintaro had been moaning and looking at him the way he had. 

Rintaro’s sweet, post-orgasm scent calms him and he inhales deeply with his nostrils flared, whining a little when he feels a hand card through his slightly damp hair.

“You did well for us,” Rintaro coos, “soak up my scent. The first time is overwhelming.”

“Didn’t mean ta pop a knot in ya,” he shyly apologises, nose dipping to Rintaro’s armpit to breathe him in fully. “Felt too good…So much. Couldn’t help it.”

“It’s only instinctual…” Then, after a moment Rintaro asks, “have you ever knotted in your fist before”? The omega takes a glance at a sleepy Osamu, who shrugs.

“...No…” A pause, he sniffs. “Maybe once to some omega porn I s’pose…”

“It doesn’t take long to go down after that, does it? This takes a while, but you can have my scent, it’ll calm you.”

“Feels like I’m hoggin’ ya.”

“‘Samu will be conked out in a few minutes,” Rintaro tells him softly, stroking through younger ‘Samu’s soft grey hair. “I think he’s jealous he doesn’t have your stamina.”

“I ain’t asleep yet ya know,” Osamu huffs, peeking an eye open to glare at his mate. “Ya replacin’ me with a younger model already?”

“He’s too cute,” Rintaro tells him, wrapping both arms around ‘Samu’s shoulders and squeezing. “My own mini ‘Samu.”

“Fine, ya greedy bastard, keep him.”

“You get cranky when you haven’t eaten,” Rintaro whispers in ‘Samu’s ear. “It’s sweet though. Come on, ‘Samu, I know you want in.”

Moving quickly, Osamu snuggles in close to Rintaro, rumbling happily when his omega wraps an arm around him.

While they wait for ‘Samu’s knot to go down, he thinks about how he almost doesn’t want ‘Samu to go back to his own timeline…If it means he gets to watch him knot his husband one last time.

Maybe…They can delay Kita-san’s spell a little longer to teach their little ‘Samu a few more tricks before he returns to a younger Rintaro. 

Chapter Text

One moment, Osamu is gathered around the fire, Rintaro pressed to his side with Kiyoomi, Atsumu and the cousin seated on the opposite bench. The rest of their men are drunk, either racing about and laughing, or already passed out for the night. Rintaro’s warmth floods his senses and the alcohol makes Osamu lean towards him, body swaying. Someone – one of the travelling bards with the group, is playing music and singing and it’s all very merry – minus the obvious tension around the fire.

“Don’t be a pussy!” Atsumu loudly exclaims, holding his cup in the air. “And drink. Even Omi-Omi’s doin’ it.”

“Under duress,” the elf complains from where he’s practically glued to Atsumu’s side.

The cousin – Motoya, has already downed his, jumping up to down his waterskin as he gags at the foul taste of the hallucinogenic. 

With a shrug, Rintaro quickly downs his, though with less of the overreaction as Motoya does, the cousin now fussing over Kiyoomi and teasing him into downing his cup.

Osamu had hoped Rintaro might say no and crash out in his bedroll – but of course, his best friend is as experimental with this kind of thing as Atsumu, so Osamu finds himself downing the awful tasting tea – made from some mushroom and plant root, in one quick gulp.

He coughs at the aftertaste, leaning to the ground and gagging while Rintaro pats him on the shoulder, leaning in to whisper in his ear.

“Come on, let’s lie down,” he says playfully, standing on shaking legs. “We’re about to see the maker.”

Leaving a laughing Atsumu and one very neurotic Kiyoomi behind, Osamu allows himself to be led to the tent he shares with Rintaro. It’s difficult sharing such a cramped space with his bestfriend-turned-crush, but he has long learned to swallow down those feelings, lest he ruin one of the few good things in his life.

Down on their bedrolls, Rintaro sighs happily, his hand finding Osamu’s, giving it a squeeze.

“Just remember, it’s not real,” he tells Osamu, lying on his back with Osamu’s hand resting on his chest. “If you freak, count backwards from one hundred or something, or picture me naked, whichever works fastest.”

“Asshole,” Osamu groans, pulling back his hand until Rintaro reaches back across to grab it and yank it back to him. “This better be good.”

“It’ll blow your mind. ”

It takes several minutes for the hallucinogen to take effect and one minute, Osamu is lounging on his bedroll, listening to Rintaro talk. The next? He’s blinking, swirling shapes and colours entering his vision and then suddenly – he’s outside.

The camp looks almost the same – with the crackling fire and the tents positioned side-by-side, but he’s alone. That is, until he hears quiet footsteps behind him. Feeling sluggish, Osamu spins around to see Rintaro standing with his back to the moonlight. His best friend looks positively debauched — messy hair, with bright red cheeks, wearing lacy, frilly lingerie that leaves little to the imagination. 

His nipples pebble in the cool night air, poking through the sheer material of his bralette. Shadows cast angellike wings behind his back and he steps towards Osamu, barefoot on the grass.

“Rin?” Osamu asks, confused, knowing in the back of his mind this must be part of the hallucination despite it feeling so real. “Whaddya doin’?”

Angel-Rintaro looks at him with a rare smile before stepping forward and settling down in front of Osamu on the large bedroll.

“Isn’t this what you want?” He asks with a cock of his head, leaning so close, Osamu can see the flickering fire reflected in his dark green eyes, “What you’ve been dreaming of? Now you have me.”

Uncertain, Osamu shuffles, gaze flickering briefly to Angel Rintaro’s lips before shooting back up to his eyes again. “I…It feels wrong, y’know? Yer my best friend.”

“You’ve wanted me for so long,” Rintaro practically whines, “ daddy. ”

The wires in Osamu’s mind must be crossed – or completely snapped in half at the speed his cock stirs and hardens in his trousers. Oh god, he can never, ever look Rintaro in the eye again after this, can he?

And if he can’t have his best friend any other way, it wouldn’t be wrong to indulge in the fictitious version of him, would it? Rintaro will never know…And it’s not wrong if it’s practically his imagination, right?

“Every dirty thing you’ve ever wanted to do to me,” Angel Rintaro coos, flopping onto Osamu’s lap, face down, with his ass in the air. “I’m in your thoughts, I’ve seen what you fantasise about. You like it rough, don’t you? But you need a little coaxing.”

Taking one of Osamu’s hands, he guides it to his pert little ass and plants his palm down on it, encouraging Osamu to squeeze the warm, pale flesh.

“I…” How long has it been since he’s slept with someone? He fucked around with girls a lot in his youth – mostly because that’s what Atsumu enjoyed and it was a bit of a competition between the two, until Osamu found out that his tastes leaned towards the more…Strong and masculine side of things. 

“Maybe you still need some encouragement?” Rintaro asks him, innocently blinking his eyes.

“Wha–?”

Before Osamu has the chance to react, there's a puff of red smoke beside the bedroll and Demon Rintaro appears, this time wearing red and black lingerie with a slight bulge in the front where his panties sit. He has small, burgundy horns poking through his dark hair, and a long, red pointed tail that swishes behind him.

“Really, ‘Samu, your fantasies are kinda fucked up,” is the first thing Demon Rintaro tells him, the judgement evident in his tone.

“This ain’t me!” Osamu splutters, “I ain’t controllin’ this.”

“It is what you desire though,” Angel Rintaro points out, still draped over his knee. “And you’re so hard.”

“Jesus christ, ” Osamu curses, stomach flipping when Angel Rintaro palms over his bulge, Demon Rin now stepping behind him to massage his shoulders. “Can’t tell if I’m in heaven or hell.”

“Why not both?” Demon Rin whispers in his ear, biting down on the shell of it. He settles down behind Osamu, kissing the sensitive skin just below where he bit, his hands moving around to cup Osamu’s chest. “All this muscle going to waste. Why don’t you touch your cute little angel, he’s feeling left out.”

Osamu is tentative as he finally squeezes Angel Rintaro’s butt, giving it a gentle slap. Rintaro jolts, making an adorable little whimpering sound, he writhes on Osamu’s lap, pushing his ass out further.

“I can take more,” Rintaro groans.

“Do it harder, you heard him,” Demon Rin says between kisses on Osamu’s neck. “Be a good boy.”

Bless the maker, Osamu thinks, as he spanks Rintaro’s ass – once, twice, three times. He feels  a wet patch on his lap – feeling almost as though his angel had come already.

“I can read your thoughts,” Rin tells him, still massaging Osamu’s chest, his thumbs brushing his small, hard nipples. “Put a hand between his legs, feel for yourself.”

When Osamu does as he’s told, slotting his fingers between the crevice of Rintaro’s thighs, he cups him – in search of his little cock, instead, feeling the warm wetness of a slick pussy beneath his hands.

“Oh shit,” he swears, practically drooling at the feel of it, and the sticky slick seeping through his panties onto the pads of his fingers. “Ya got a pussy?”

“All yours,” Rintaro says with a wink. “Isn’t that a surprise?”

Osamu always thought he only liked dick, but this, this is fucking incredible.

“He’s still a boy,” Demon Rin tells him, “we know how you like them, but imagine how it feels to sink your cock into something warm and wet .” The words sound so dirty against his ear, Osamu can’t help but shudder, his breaths coming as shaky, heavy inhales and exhales. “You should take control, we both know you’re dying to.”

Overwhelmed and half expecting to wake suddenly from this dream, Osamu gingerly dips his fingers back into Rintaro’s pussy. Spreading his lips, he watches the way his angel shivers as the cold air hits his pussy.

“I’ve got ya,” murmurs Osamu, sinking his index finger into Rintaro – while the angel moans on his lap. Devil Rin reaches down to undo the lace on Osamu’s trousers – removing his straining cock from its confines. “Yer tight…Really aren’t a slut are ya?”

“He’s innocent, isn’t he?” Devil Rin whispers in his ear as he slowly jerks Osamu off, squeezing his leaking tip and rolling down the foreskin with practised hands. “You’ve always wanted to corrupt Rintaro, haven’t you?”

“Yer goin’ to be the death of me,” Osamu murmurs with a shaky voice. Turning his head to the side – his finger pumping shallowly in and out of his angel, he meets Devil Rin in an unexpectedly slow kiss. His tongue languidly sliding over Rintaro’s, his pulse racing as the hand working over his cock speeds up. “Don’t…I don’t wanna come yet,” he warns between kisses, gently caressing Angel Rin’s thigh with his hand as he writhes and whimpers in his lap.

“I’ll punish you if you come too soon,” Devil Rin mutters. With a smirk he drinks up the desperate breathy whine from Osamu in his kiss. “You won’t get to fuck our angel, I’ll make you watch as I ruin him— oh?” He gives Osamu’s cock a playful squeeze, smearing the leaking pre all over the tip. “Mini ‘Samu liked the sound of that.”

“Don’t…” Osamu moans, struggling to talk as he pants like a dog into Devil Rin’s mouth. “Don’t name my dick, w-weirdo.”

Suddenly, Devil Rin roughly fists a hand in Osamu’s hair and yanks his head back until his throat is exposed to the night air. “You love it,” he says darkly. “You’ll take anything I give you. Give our baby some attention.”

Osamu is released, instantly moving to stuff a second finger into Angel Rintaro. Working him open slowly, he coos and shushes him as he moans softly, Osamu spreading his cheeks and groping him possessively. He spanks him, hard – the skin red and hot to touch. 

“Ya like that, angel?” Osamu asks him, smoothing away Rintaro’s damp hair from his forehead. “Ya want more?”

“I want to come ,” he complains, reaching out to wrap a hand around Osamu’s dick – both Rintaro’s now firmly grasping him. “On this.”

“Fuck his throat first.”

The speed at which Osamu shimmies his trousers down – tossing their angel onto the bedroll –  is near inhuman. Angel Rin lounges on his back, looking as gorgeous and pristine as he is, while Osamu plants a knee either side of his head and lines his cock up with his pretty pink lips.

“That’s it, ‘Samu,” Devil Rin croons, plastering himself to Osamu’s back so he can rotate between squeezing and groping his ass from behind and his tits upfront. “Don’t hold back, but stop when I tell you to.”

Straddling his baby's head, Osamu angles his dick towards his face, prodding his spit-slick lips with the leaking tip. “Yer gorgeous like this,” he compliments, petting a hand through Rin’s hair where it forms a neat halo around his head on the bedroll. “Prettier than a picture. Wanted ya underneath me fer longer than ya could even imagine.”

“Get on with it,” Angel Rin says, embarrassed, as he looks away with his cheeks flushing a pretty pink. “Use my mouth. But don’t forget about fucking me.” He says the last part with an adorable pout, one Osamu ruins when he forces his cock straight down his throat in one long thrust.

“Wouldn’t dream of it, darlin’” Osamu tells him, patting his flushed cheek as he starts to thrust in and out of his mouth, his thumb smoothing over his cheek when a stray tear makes its way down his face. 

Rintaro’s mouth is even better than in his dreams, small, tight and wet — almost as good as fucking a fresh pussy. He chokes and sputters when Osamu forces his way in, whining when Osamu strokes his hair and shushes him. He’s perfect and pliant. Angel Rin sucks him up like he was made to take Osamu’s cock, slurping and sucking gratefully even when Osamu jackhammers into his mouth and stretches his lips wide.

“Look at you both,” the devil on his literal shoulder tells him, Devil Rintaro’s long pierced cock ( holy fuck, Osamu about registers through his pleasure-fuelled haze. It’s pierced. ) prodding between his asscheeks. “You like being a little dominant, don’t you ‘Samu? But something tells me you also want to be taken care of, is that right?”

With his head tossed back – his cock feeling an intense pressure he’s never felt before, and his eyes squeezed shut, Osamu nods frantically. Yes, yes, yes, he hisses through gritted teeth – unaware of his own incessant chanting. Need someone ta fuck me too, whatever they’d give me. Wanna feel good.

“Well, fuck him for real. I’m not stopping you.” Osamu lifts up, devil Rin spanking his ass, the fat and muscle rippling in the wake of his palm. “Bend him over.”

“Fuck, fuck.” In his haste, Osamu stumbles, almost falling before grabbing Angel Rintaro – who looks up at him with glazed over fuck-me heart eyes. He manoeuvres him into position – on his knees with his hand pushing down on his back. “Insane that this is really happening…”

Devil Rintaro grips his hips, massaging slow circles. “Nah, it’s all in your head, pervert.” The word pervert uttered in the same bored tone of his long term crush sends a warmth down his body, his wet cock twitching in interest. “He likes the sound of that.”

“S-shut up,” Osamu says, embarrassed, before he remembers where he is and turns his attention back to the needy, whining Rintaro below him. “I gotcha, princess. Just wanna lie back and get fucked dumb, don’t ya?”

“‘Samu…Don’t make me wait,” Angel Rintaro quietly begs, looking back at him over his shoulder. “Want to feel you.”

“Right…Right okay,” Osamu says quietly to himself, giving his ass an experimental spank before parting his cheeks to admire his puffy little hole. Even further down, the main prize sits wet and dripping, clenching uselessly around nothing. “I don’t think I can go slow, but yer slutty enough to love that.”

Feeling up Rintaro’s cunt, he spreads his lips, fingers dipping inside him briefly before pulling out and lining his cock up with him. 

“Ready, pretty darlin’?”

In response, Angel Rintaro gently rocks back against him, sinking the tip of Osamu’s pink cock into his tight hole, his pussy sucking him up nicely.

“Come on, Osamu,” he goads, squeezing Osamu’s cock. “Ruin your angel.”

“Okay… Ngh, ” he groans, a little bashful, until he sinks in the rest of the way and his brain short circuits. 

Electricity sparks through him and suddenly Everything is heightened. For a long moment, he’s frozen in time while his brain catches up to the fact that he’s balls deep in his own best friend, who is whining and pushing back against him for more.

It’s only when something small and pointed – but not sharp, tickles the backs of his thighs and travels up between his ass cheeks to caress his own, round hole does he zap back to reality.

“Wha–?”

“Shhh,” Devil Rin whispers, pressing himself against Osamu’s back while his devils tail, slick with some kind of lubricant, is pressing against his hole. “Pull out and gently back in, I’m just having my fun.”

Overwhelmed and a little confused, but nonetheless incredibly turned on, Osamu does as he’s told and slowly eases out of his angel’s slick pussy, biting his lip as he watches Rintaro’s hole twitch and stretch, his cock slipping out glistening and wet.

“I ain’t sure…” He trails off, tensing when that tail tries an experimental push inside.

“You’ve touched yourself in here, why’s this any different?” Devil Rin questions, his lips ghosting the space between Osamu’s neck and shoulder. “Start fucking him, it’ll make this even better.”

As embarrassing as it is, Osamu’s cock twitches when that long tail pushes until it’s nestled neatly into his ass. Fuck it, he thinks, technically this is masturbating with a few extra steps, so it isn’t that weird.

Soon, he’s slamming into Angel Rintaro with his large sweaty palms clutching his hips like a lifeline, the long, slim devils tail fucking in and out of him as Devil Rin sucks bruises into his neck and fondles his fat chest.

It’s heaven, as he fucks into something warm and wet while something warm and wet violates him, reaching inside to places he didn’t think it was possible to stimulate. His angel whimpers, a chorus of please’s and right there’s as he chokes on his moans. The sounds spur Osamu on, skin slapping against skin, his cock bullying deep into Rintaro’s wet cunt. 

Blinding pleasure takes over and he groans out loud, kissing Rintaro on the lips and reaching up to tug on his sensitive horns. There’s a sick thrill when Rintaro moans into his open mouth, allowing Osamu’s tongue entry. With one hand fisted in Angel’s hair, he yanks his head back and forces his back into an arch, granting Osamu just the right angle to slam against his g-spot over and over, pounding so heavily that he can barely breathe.

“Fuck, ‘Samu,” Devil Rin murmurs into his mouth. “Keep rubbing there, you’ll make me come…He’s close too…Come on…” he starts to babble, feeling himself reaching climax from the stimulation on his horns alone. “Wanna…We should come together…I know you need it, so pent up.”

Moaning into his mouth, Osamu drops Angel Rin’s head back down to fondle his clit, rubbing it in tight circles until he feels him clench around his cock — the action causing Osamu to tense and writhe. It’s at that moment that the tail rearranging his insides curls and angles itself to brush up against Osamu’s prostate and then for a brief moment, he’s blacking out from the pleasure.

Once he opens his eyes, it’s all he can focus on as his prostate is abused over and over again. 

“Shit…Rin…Ohmygod–” even when he’s fingered himself, he’s never— not like that. A long, forked tongue licks up his nape and around the shell of his ear. Everything is so much, he’s barely even aware of either Rin anymore – just the constant, blinding pressure on his prostate and the feel of his cock fucking deep into a pussy. The begging, moaning and slick sounds of a pussy squirting around him are distant, his ears ringing, the tongue fucking into his lax mouth, so deep he feels it right at the back of his throat, flicking back and forth until he gags on it. There’s a sobbing sound, Rintaro calling his name through the dreamy haze, and the feel of a cock rubbing between his ass cheeks before it pulses and sprays cum all over his cheeks and down his thighs.

Finally, he follows, pumping the body below him to the brim. He fucks Rintaro through it, pushing his cum in deep. Devil Rintaro is panting in his ear, pressed against him before lazily kissing all over his back and shoulders until Osamu feels his cock grow sensitive, already beginning to soften.

He blinks, and the fog clears – lying snug between the two Rintaro’s. Angel Rin’s face is tucked under his chin, sighing happily, his leg rubbing between Osamu’s thighs. The long tail of Devil Rin tickles up and down his waist. 

“It’s time to wake up,” he hears Rintaro mumble against his arm, deep green eyes gazing up at him wickedly. “It’s been fun, but you have someone waiting on you.”

When Osamu finally comes to, blinking rapidly as the haze clears and he realises he is no longer by the fire – but in the safety of his bedroll in the tent he shares with his best friend, he instinctively rolls over onto his front to shield his raging hard on and groans.

“What the fuck.”

“Was that as good for you as it was me?” Rintaro jokes from where he’s sprawled out on his own bedroll looking far too smug for his own good. In Osamu’s peripheral, he looks a little sweaty, his face red – though it’s likely an effect of the drug so he thinks nothing of it, his mind still reeling from the hottest – and most fucked up, sex (dream) he’s ever had.

“It was somethin’” Osamu comments, lifting his head up to properly meet Rintaro’s sharp gaze and immediately regretting it as he does so. “What?”

“Nothing,” Rintaro playfully says, fiddling with the hem of his shirt. “You just have an interesting psyche.”

“What do you mean by that?!” Asks Osamu, his voice cracking – sounding far too panicked not to be suspicious.

It seems to be the exact reaction Rintaro had expected as he breaks out into a cackle that makes Osamu want to fling himself from the nearest cliff and hope he hits the rocks at the bottom. 

“Laugh all ya want, ya asshole,” Osamu groans, his ears turning pink as he hides his face in his pillow. “Ya said ya wouldn’t be judgemental.” Anxiety starts to flood his system, knowing Rintaro likely thinks it’s some fucked-up drug haze that Osamu couldn’t control and that it didn’t mean anything. “It was nothin’...Just a dream. I ain’t thinkin’ too hard on it and neither should you, yeah?”

Sure, he just spent the last half an hour playing out one of his biggest fantasies, but it wasn’t meaningless. He dreams about Rintaro’s smile, his laughter, the warmth of his palm and the curve of his throat. There’s a moment where Osamu’s throat constricts and he thinks for a second – in all of Rintaro’s mocking, that he might throw up – or cry, whichever would be most embarrassing for him. He’s going to have to avoid Rintaro, perhaps sleeping outside by the fire and constructing himself a new tent whenever they make the next town. He’ll no longer revel in the knowing glances they share whenever Atsumu gets a new idiotic plan, or the private smiles Rintaro reserves for only him. 

He’s moments from bolting out the tent with his things when he realises it’s silent and he cautiously chances a peek out from his pillow to meet Rintaro’s gaze. His best friend’s eyes widen when he meets Osamu’s sleepy grey eyes and he freezes, opening and closing his mouth a few times like he’s not sure he ought to speak.

“...Say somethin’,” Osamu tells him, sounding more wrecked than he’d hoped. “Rin, I’m serious.”

There’s a quiet fuck it, before Rintaro closes the small space between them in their cramped tent. “What if…” He says, coughing, Osamu’s irritation growing and replacing his anxiety. “We don’t do that fucking drug again.”

“Rin–” Osamu starts, the apology on the tip of his tongue. He must have really fucked up.

“No…I mean… Shit. I’m shitty with words, and I’m shittier when those words involve you. So roll over.”

“What?”

Seemingly taking too long, Osamu barely has time to react before he’s forcefully pushed onto his back with a yelp, eyes like saucers when his best friend straddles his waist looking equally as embarrassed as he is.

“Tell me about your dream,” Rintaro says suddenly, intensely. “I’ll tell you about mine. There were two of you, and it meant more than a shitty brothel lay.” Osamu feels his cock stir in his pants when Rintaro grinds his crotch down on him, and by Rintaro’s reaction, he feels it too, his pussy throbbing.

“Do whatever you want with that information, maybe we can get blind drunk and wax poetics but for now, I need you to show me everything you did to me in the last half an hour, Miya Osamu.”