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oh-katsuki · 3 months

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it's been a really long time since i wrote porn for porn's sake. here u go. it's alpha nanami :)) i don't have a title for it oops

cw: alpha!nanami, omega!reader, a/b/o, breeding, knotting, heat and rut cycles, dubcon on both sides, fingering, cohabitation, taboo, protective nanami, i feel like there is a slight primal kink in here, light dacryphilia,

wc: 3.1k

nanami didn't mean to take in a stray, but that's sort of how it happened. you're staying with him until a particularly careless friend helps to find a suitable living arrangement for you. nanami really isn't sure how it became his problem, but he'd feel awful if he'd told satoru no and left you without somewhere to go, no matter how against living with an omega he is.

frankly, nanami doesn't support the idea of alphas and omegas living together. he thinks it's a bit perverse. there's far too much at risk and the situation can become dangerous if it's the wrong pairing. sure, sometimes it works out. the better of his kind (of which he considers himself to be) give the necessary space and resist the temptation, but the others... take it too far. it'd be easier for you to live with a beta, and nanami wonders why satoru didn't first go to one of them. maybe your pheromones are weak and satoru isn't worried. that's probably why he hadn't noticed them when satoru first brought you by to ask if it'd be okay.

he knows that second gender is a spectrum. some alphas and omegas hardly emit any pheromones at all, even during heat and rut cycles. nanami thinks he likely falls into this category, seeing as he's never been particularly tempted by an omega and very few have ever been all too tempted by him, but it's a gamble. it's—frankly—unethical to ask this of him and though nanami knows that he should have said no, something in his good nature compelled him to say yes.

you've weak pheromones too, he thinks. he, of course, can feel them to a degree, but seeing as you mostly keep to yourself, it's hardly a problem in the first few weeks. frankly, the most tempting thing about you is that you're beautiful. you seem to have an almost standoffish air about you, proud and dignified, with a preference towards a more solitary and observant lifestyle. most of the day, the two of you hardly even see each other, going about your lives entirely separately only to settle into the same house for bed at night.

you don't say much when you're home. in fact, nanami would wonder if you could speak at all if it weren't for the conversations he hears you having on your phone and the little laughs or eyerolls you give in response to his comments. there's understanding there, but it's silent and you hardly ever dignify nanami's words or invitations with a response. maybe you're airing on the side of caution. he wouldn't blame you if you are. so, for the next two weeks the two of you coexist without so much as a hello between you both, silently sharing a space. you stay out of the way and nanami pretends that he isn't slightly unsettled by your constant proximity and the creeping feeling that you don't really like him all too much.

"they're a little difficult," says gojo over the phone. "kinda standoffish and really smart."

"so i've noticed," nanami responds. "i can't say i blame them though. you've put us in a weird spot."

"oh, nanamin, i know you well enough to know that you wouldn't lay a hand on them even if they begged," satoru laughs. "and they really might."

nanami grimaces at satoru's statement.

"i still don't understand why it had to be me," nanami says flatly. "you could have called ijichi. it'd probably be safer."

"how noble," satoru snickers, "but i trust you. hang in there a few more weeks. we've been working on securing an apartment for them and once we do, they'll be out of your hair. you're an angel for letting them stay." he sing-songs into the receiver. nanami holds it away from his ear.

"sure," he says. "it's not really much trouble... it's just.."

"that they're an omega. i get it. stay strong or whatever lol," satoru laughs. "unless of course, you really like them."

nanami huffs and hangs up the phone. satoru's got a good head on his shoulders, but he knew where that conversation was going. satoru was likely to say something about your heat cycle and nanami, being an optimist in cases like these, hopes silently that it won't come for another two weeks. he knows he could ask, but he worries about coming across as something of a creep. nanami is a little orthodox in the sense that he believes alphas and omegas should be separate for this reason exactly. suppressants exist but they don't always work and though nanami has sense about him, he's always had an insecurity about the kind of monster his second gender could make him. it sets him at ease a little that your pheromones appear as weak as they are.

you round the corner into the living room, standing just on the far end of the room. you're wearing pajamas, but you seem to feel no need to cover yourself or hide any perceived indecency. nanami glances at you, making a point to avoid looking at the shape of your body. it's inviting and you look at him for a moment with a small smile before raising one single eyebrow and letting out a low huff of air. nanami decides that you'd heard his conversation and he watches you shake your head as you move to the kitchen to peruse what he has. your hips, swaying slightly with each step, draw his attention to the curve of your ass and he feels ashamed for even having looked.

you're beautiful, that's certain. even the way you move is beautiful. nanami has eyes enough to see that. something stirs inside of you when he speaks, wordless recognition, maybe amusement or irritation, and vice versa. regardless, it's beautiful and nanami finds that the longer you're here the more he has to swallow it down.

you seem to get a little uncomfortable if nanami has people over, even for a moment. not that you've ever said anything about it, but you appear set on edge when he does so in the following weeks, it leads him to not bring anyone over at all. he can't bear the idea of making you uncomfortable. for as little as you've spoken to him since you've been here, nanami finds that he's grown rather fond of you. if things continue this way, he should hate it when you leave. admittedly though, he's looking forward to it a little. nanami feels that you're... a temptation. one he can't really seem to overcome.

one evening, you sit down in the living room with him. it draws his attention to look at you.

"i'm not mean, you know," you say flatly.

nanami is astounded to hear the cadence of your voice so clearly and without prompt. he can only offer a nod in return.

"i'm just picky," you continue, shifting in your seat as if you're made uncomfortable by the way you're sitting. "i have to be, being the way i am and all."

"i understand. i'm not offended," nanami says. "but some people would probably call that rude."

you smile at him, coy and delicate. "would you?"

"maybe," he offers. "if the circumstances were different."

nanami clears his throat, furrowing his eyebrows at your body language. something's off and he wonders if maybe your cycle has begun. he shifts on the couch and turns his full attention to you.

you move over to him and sit just adjacent to his leg. something in him stirs, primal and unrecognizable. you've never been this close and he only now notices that you smell nice, like something light and fresh.

nanami feels his chest stir. "this is the most you've ever said to me, i think."

"sorry," you say.

"don't be," he responds.

this conversation is awkward. it's loaded. it's like a conversation between two people who can't exchange more than a few words without experiencing intense sexual tension. he clears his throat.

"i need your help," you mumble, shifting closer. he knows what you're implying.

"i can't help you," nanami responds through gritted teeth.

"please," you say, standing slowly. you linger in front of him for a moment before reaching out and slowly straddling his legs. nanami flinches as you settle on him, pausing for a moment to breathe. "touch me."

you place your head against his shoulder, fingers grabbing his shirt as if you're agitated. the skin of your cheek is warm against his collarbone and he can feel your hair against his jaw. you twitch lightly when you touch him. carefully, he places a large hand on your head. your whole body flinches, unbelievable warmth soaking into his skin.

you feel like you have a fever and the next time you raise your head, your eyes have gone glassy, face darker. your lips are wet and lightly parted and a layer of sweat covers your forehead.

"not like that," you say, something needy creeping into your voice.

nanami, against his better judgement, rests his hands on your waist. you shudder under his touch and he slowly strokes the exposed skin of your sides with his fingers. trailing the pads of them against raised goosebumps on your skin. between your legs, he can feel heat. he knows you're wet and he knows what you want. nanami isn't sure he can give it to you, he's unsure that he should. it's not illegal, but he feels that it's wrong. something about it is fundamentally wrong and the situation goes against all of his morals. his mind still wanders.

you rest your forehead against his chest, and he feels your pheromones as they hit his nose and soak in through his skin. his body responds, tensing. your breath picks up, little heaves and pants, and you squirm down against him almost involuntarily. nanami feels himself grow hard. it surprises him and shames him. he feels heat rise to his cheeks at the realization that he's pressing up against the inside of your leg, something that makes you stir and settle directly over him. every exhale from you is a borderline whine and the syrupy smell of you grows more intense by the moment. nanami still runs his fingers along your sides, venturing over your tummy and back occasionally.

"just a little bit," you command, rubbing your cheek against him and then placing your mouth on the side of his neck and biting. "i'm sorry. just a little bit."

nanami winces and you drag your hips over him. his hands fly to yours, gripping hard enough as you make you whine.

"i can't," he grits out, speaking directly against the way his cock throbs against your core. he can feel it's dampness, a humidity that soaks through his pants.

"it hurts," you mutter and nanami feels an unpleasant stirring in his stomach. he hates the thought of you being uncomfortable.

"maybe we can find help-" you twitch over him, making him wince, "for you."

you shake your head, "you."

nanami exhales and tips his head back, his fingers still on your waist. he weighs the outcomes of this in his mind. he could push you off and fix you a blanket and a safe space, give you some tools to help yourself and then plug his ears and pretend he doesn't want to do it himself. he imagines the buzzing sound, the way you'd whimper from the other room over, still unfulfilled despite the aid. he thinks about your fingers between your legs, unsatisfying and only serving to worsen the itch. it makes him strangely jealous, nauseous almost, that you should be so uncomfortable in his presence.

you exhales against him and it's a near defeated sound. nanami's fingers buzz with adrenaline, his cock swelling and throbbing every time you so much as shift over him. there's a lack of control in this situation and his fingers move to comfort you almost against his will.

something natural and easy takes over as he slides a big hand down to the front of you and cups your cunt. it feels almost like an out of body experience, but both yours and nanami's humanity drips away slowly to make room for these primal actions. you shudder and nanami's chest swells with relief as he sees your expression. there's a need within him to care for you. it's protective, the same way he'd feel if you were in physical danger.

nanami moves his four fingers over you slowly, his breathing hitching as you push your body against him. he can feel your dampness soaking through your thin shorts and it isn't long before your relief gives way to more need.

"just this once, nanami," you breath against his neck. "please."

nanami's head is filled with something syrupy. probably you. it's probably a chemical reaction caused by you and he knows that any pheromones you're releasing are probably being released in equal amounts by him. they take up space in the room, crowding him so that all he can focus on is you, is the need between your legs that calls to him like song.

"okay," he gives in, pulling your panties to the side and dipping his fingers into you.

you shudder and let out a short cry, thighs trembling. he knows he won't be able to satisfy you like this, but he wants to try. nanami knows though that there is no such thing as nipping it in the bud with these sorts of things and as he begins to move his fingers inside of you with a beckoning motion, he feels himself slip farther away.

you're so wet, dripping down his fingers. your pussy clenches around them, begging for a knot, sucking the two digits up into you and then threatening to push them out. nanami has been with omegas before, but he's never felt himself slip away like this. his humanity leaves him in favor of something animal.

nanami shushes you quietly as he pulls his fingers from your body. you whine and squirm against him, pressing down and grinding against the bulge in his pants. he sucks in a sharp breath and quickly discard your bottoms, leaving you bare and exposed in his lap.

your cunt is sticky and shining, glistening with your wetness. he can smell it, the way you're probably fertile, and the perverse thought crosses his mind that maybe you deliberately avoided your suppressants so that he could do this to you. how out of character for him to think that.

for someone so proper, he makes quick work of pressing the head of his cock against your entrance. you push your body forward to try to take him in and nanami very quickly slides into you. you're tight and with the way your cunt makes him feel, he knows that the stretch must hurt you, but he can't seem to stop. he's so focused on quelling the ache within you, buried deep in that spot where his knot will inevitably catch.

you are barely capable of forming words now, dumb and deaf with your heat. any words of comfort nanami offers to you seem to go in one ear and out the other, but he offers them anyway. they're automatic and they come without his even needing to think about them. things about taking care of you, about knotting you the way you're begging him to, about making sure you're never alone when you have to do this. if he were in a better state of mind, he'd be mortified.

instead, he fucks his hips up into you, holding you by the waist against his throbbing cock. then, when that isn't enough, he lays you on your back on the couch and presses your knees to your chest so that he can go deeper. he needs to get deep enough to where his knot will catch, to be able to stay there to ensure it catches properly. he feels the way air leaves you with every fuck of his hips.

you raise your hand to touch his face, eyes glassed over and watering as gentle tears slip down your cheeks. a silent encouragement that pulls him from his thoughts back to you. nanami turns his head instinctively and kisses the palm of your hand. then, he takes your thumb into his mouth and bites down on the fleshly part at the base of it. he could draw blood if he wanted, but he doesn't. instead he takes your hand as it falls from his lips and kisses you plainly again on the palm before pinning it above your head.

"i'll take care of you," he grunts out and you nod deliriously.

nanami makes quick work of knotting you. he bullies his cock as far in as it will go, swelling and swelling until he sticks. you squirm as he does, gasps growing higher in pitch until you're silenced by the pressure deep in your abdomen. you cum around him, he thinks, pussy fluttering as it throbs around his knot. then, you exhale as the heat recedes into the background with this momentary relief.

nanami winces as he holds himself up over you, slowly returning to his head as the swell of pheromones recedes and leaves only the feeling of the space he takes up in your cunt.

you search his face for something, benevolence maybe, and nanami places a wide palm to your cheek.

"i'm sorry," he breathes as words find him again. "i didn't intend to-"

you shake your head, returning to yourself as well. "don't be, i wanted to."

nanami isn't really sure what to say and you wince under him as he settles his weight a little further, throbbing lightly at the mention.

"hold me," you ask and nanami obliges. he settles fully over you before lifting you so that you're straddling his lap again. you wince and nanami soothes you by gently stroking your face. it's automatic again, the urge to comfort you is well beyond his control.

something in you triggers something in him and it is two full days before either of you are lucid and well enough to separate. satoru calls him multiple times, but nanami ignores him, too preoccupied with his unexpected rut and keeping you comfortable. at present, he's well past the initial guilt and frankly, entirely hellbent on deciding that you should stay. so much for his practicality, nature won out in the end.

nanami doesn't really think he'll ever hear the end of this, especially not from satoru who, when he inevitably gets a hold of them, will tease so relentlessly that it might shock nanami and you back into your senses. he decides to hide out here with you for a little longer, filling the room with the scent of you both until it crowds out everything else. he likes the way you feel nestled up beside him, messy and breathing deeply as you sleep.

a tag for my friends @antizenin and @kentocidal bc they asked!!!

#nanami x reader #nanami kento x reader #jjk x reader #nanami smut #nanami kento smut #tw: a/b/o #tw: breeding #tw: dubcon #i can't find my writing tag #also there are prob spelling mistakes in here i apologize #i apologize if this isnt very good

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