Chapter Text
As an omega, going out at night might not have been the safest for you when you were feeling some type of way but the cool night air always eased your aching nerves. It was your equivalent to taking a cold shower though not as scathing and honestly, standing on top of your apartment building always seemed to help clear your mind.
You haven’t entered your frenzied heat, not yet, but you know it’s coming. Soon you’ll be stuck inside your apartment with the doors locked to the nines, left alone with various toys in a too hot and stuffy room. You had friends you could call to ease the pain for you and though that may be better than suffering on your own, you were always left feeling lethargic and guilty. You haven’t yet bonded with anybody, a decision you’ve made on your own accords but that didn’t mean you never felt… lonely.
You sigh and rest your head on the cool roof door, trying to clear your mind before your big day. Meditation sometimes helped your cycle go by more smoothly but not every time. It didn’t hurt to try though. You hum to yourself a rub your sides that have been cramping for hours.
A loud thump! catches your attention. “Is that you L/N?”
Oh you’ve got to be kidding me . Of all people to bother you on your much needed meditation night. You don’t even have to turn your head to know that Eraserhead had done his job landing on top of your building on his nightly patrol.
The both of you patrolled during nights but you of course had to take the week off because of your heat so he had more ground to cover than usual. You pray that he doesn’t know why you have to take these long period breaks but it’s not hard to figure it out seeing that you’re an out and employed omega.
“Mhm, I’m just enjoying the night air…”
“It’s pretty late.”
“Yeah, no shit.” You already feel yourself growing irritated. You weren’t positive why you didn’t favor Shouta Aizawa. You knew him in high school and though he was buddies with one of your personal friends, you always wanted to avoid his gaze. You were like that with a lot of alphas though. You just thought he had a superiority complex or something.
He steps out in front of you and eyes you sitting on the floor as if you’re some kind of criminal he’s about to interrogate. His lips stay in a flat line while he works a brow at you and you let your eyes wander down his muscular form that’s evident even while he sports his loose fitting hero suit. You can’t help but wonder what it would be like to have him take you, to satiate your building need. Fucking Aizawa .
“Are you feeling alright, L/N? It’s cold out and you’re wearing…” he gestures at you and instantly you cover your breasts. Sitting in your pajama shorts, you’ve never been more uncomfortable with alpha’s state. Okay, that wasn’t true but Aizawa just made you mad and it didn’t help that alphas thought they had to throw their authority all over the damn place.
“I’m perfectly comfortable,” you shoot at him. You were too hot to play the pleasant conversation game.
“Hmm.” He crosses his arms. Can’t he see that I want to be left alone?!
A breeze picks up a drifts the side of the building. The chill feels good against your scorching skin and you hold your arms closer to your body as your nipples pucker. The wind blows harder and you pick up a deliciously… strong… scent. You feel yourself pooling in your pajama shorts. Fucking Aizawa.
Primal intent overwhelms you and it takes almost everything for you not to immediately call out a scandalous request. Instead, you hop up and fumble with the building keys, muttering a “goodnight Eraserhead,” but before you can even get the key through its hole, you feel a shift in temperature behind you.
“ Wait ,” his whispered command stops you dead in your tracks. You clutch your stomach. Being around an alpha with such a powerful scent can be absolutely unbearable and you can feel the intensity of your heat starting to hit you.
Your legs start to shake as you turn yourself towards back towards him. Instinctively, you bite your lip and look to the ground; a humble omega. Not good. You’re suffering through your most natural urges and for Aizawa . You hate him!!
“Oh…” he sticks his nose up and you watch as his eyes dilate, no doubt his blood pressure elevating and his natural dominating instincts coming over. “Oh fuck. That’s you ?”
You gulp in response, too afraid to answer. You feel yourself pulsating, your body responding to the scent of the alpha in front of you. Fucking hell, why did it have to be him?
There’s a tense moment where Aizawa places a hand against the wall and stares ahead of him. He chuckles to himself and his eyes slide over you while in takes a long inhale. Finally he says, “it’s easy to forget that you’re an omega with that mouth of yours but damn it if you don’t smell… fucking delectable.”
He moves his hand down to grab your the side of your head, he tugs you to the side and presses his nose against your neck. The force of his pulling feels good, almost natural , for you and you hate that you like it.
“God,” he hisses and before you know it, his tongue runs across your neck, under your scent glands. His scruff tickles and you feel his need like it’s your own. Aroused and sensitive, you squirm underneath the towering alpha, ruing the sensation of warm slick building up between your thighs.
“It’s pretty careless of you to be out alone while you’re… like this. You’re lucky it was me who landed on your rooftop and not anyone more dangerous.”
You scoff at that. Now, you know that Aizawa has a good morale and despite you absolutely detesting him, he’s not a bad guy. It’s only natural for him to sound like a complete douchebag when he has to smell you in such a state and it’s only natural that you find it completely riveting.
“Is something funny, sweet little… helpless omega?” His teeth rake across your skin and your arousal flares up!
“S-stop!” You try to push him off but the unattached alpha stood still, lips turning up into a smirk that boiled your blood and shit even barely touching him was too much for you to handle. You don’t want him to stop though. It was instinctual for you to want him. It was the most natural feeling in the world.
He levels his head with you, his hot breath brushing across your skin. Everything about him pulls you to him. Drunk on your hormones, you grip his shirt and push your pelvis against his undeniable erection, shamefully rubbing yourself on him, trying to alleviate some of the aching in your loins. He pushes his knees in between your legs and you begin grinding on his thigh and close your eyes and he chuckles.
“You don’t really want me to stop, do you? I can smell you, kitten. You’re slick with need and just waiting to be filled up with my alpha seed. You want me, don’t you little omega?”
Aizawa growls when you grab onto his thighs, nails digging into the thick fabric of his pants. His eyes are dark, watching you move and to even think of you trying to keep up this pathetic facade was too damn cute. If his hardened cock wasn’t aching to push into you, aching to claim the poor omega, aching to saturate your needs, he’d enjoy teasing you for the rest of the night. He’d always had similar desires in high school but for whatever reason, you never gave him the light of day. He intended to take full advantage of this situation, though, he’d do it consensually of course but at this point it didn’t seem like either of you had a real choice.
“I… can take care of this myself…” You’re barely able to utter. His intoxicating scent seems to build a wall between your brain and your body though because soon your arms run along his muscular frame, desperate to feel more of the strong alpha before you.
“Ohh, sweetheart. Do you really enjoy torturing yourself? If you like pain so much I’d offer to take you somewhere I’d be able to tend to your every whim but,” his breath hitches and a lowly growl escapes the back of his throat, sending you into a bit of a frenzy. No, no, you don’t enjoy torturing yourself, you’d rather have the alpha bend you over and dominate you right then and there but you could never admit that to him .
“ Eraser,” you mewl and at this point, you’re sure that your slick coats his thigh as you ride him. His eyes hungrily rove over your body, breath growing heavy as his large hands wrap around your waist and push up and under your tank top. His fingers sends spasms throughout your body
“You’re making quite the mess, aren’t you, kitten?Why are you denying yourself, hm? You think you can satisfy your urges by rubbing your need off on me? Come on, angel, I could smell you from blocks away. You can’t resist me nor I, you. Just admit that you need something from me and I will take care of everything.”
“Go fuck yourself” Of course, he’d smell you before coming on top of your roof of all places. You want to hit him but instead your hands shoot to your shorts and you squeeze your eyes shot as your fingers fumble past your elastic waistband.
“Now that’s out of the question when I have a wanton little omega practically writhing underneath me.”
You gasp when his capture weapon wraps around your wrist and pulls your hands away from your throbbing sex that gave an involuntary squeeze. You shoot Aizawa a death glare which he returns with pushing his mouth up to your ear and even with his rough, gritty voice, you can almost hear him purr when he says, “submit to me, omega. Tell me you want this hard alpha cock and I will give it to you. I’ll give you everything. Come on, Y/N, I know you need to be fucked. You can’t deny nature.”
“Fuck,” you try rolling your hips to the best of ability, trying to ease the source of your aching with the friction of Aizawa’s thighs but it’s not enough and you’re in pain . “Please touch me Aizawa. I can’t stand this.”
His hot hand travel up your stomach and stop at your swollen, tender breasts, kneading into them while pinching your nipples between his fingers. His other hand travels south, stopping at your pubic bone, he messages you through your shorts which are, at this point, more like a second skin, soaked and dirtied with your essence. “Tell me you want it, omega. You want me to rut you, to fill you up, and claim you. I wanna hear those words fall from your pretty lips.”
Of course, an alpha can’t properly knot an omega without explicit consent. It burns you to do so but the excruciating desire you felt clamping down on your burned even worse. “Alpha,” you moan, dogging your nails into the palm on your hands. “Please give me your knot.
He growls at you, twisting your body around. He pushes himself flush against your back and you can feel his cock throbbing on your ass. He tugs your hair up and plants a kiss on the back of your neck. “Was that so hard for you, kitten?”
Swiftly he peels your shorts off your body and you grow all the more excited feeling the cool hair on glistening cunt. His scarf pulls your hands to the roof’s door and you arch your back and shudder with anticipation when you hear him undo his belt.
He lines himself against your swollen sex, the head of his cock dripping with precum. Aizawa rubs his length along your slit, coating himself in your need and feels a pang when you once again call him alpha.
“Look how wet you are for your new alpha. God, you know it’s taken everything for me not to tear you to shreds in the past.”
You can hardly understand what that means, all you know is that you can’t stand not having him inside you another second. “ Shouta, pleeaase .”
A switch flips inside his head. He’s held back his restraint for long enough. He brushed his cheek along you shoulder blade and sharply thrusts into you.
He’s huge, enormous, and it feels good to have something push against your pained walls. Slowly he drags himself out and forcefully shoved back into you, stretching you out. A relieved moan escapes your mouth. “Ohhh fuck me, alpha. God, th-thank you, ohh…”
Aizawa snickers, grabbing your waist to pull you deeper on to his drenched shaft. “I haven’t even done anything yet and you’re thanking me? What a submissive little omega.” He bites down on your shoulder, breaking the skin and you yelp out and clench around his girth in response.
“Fucking hell, kitten,” he chokes, “such tight little pussy..”
He fucks you relentlessly, growling and grabbing, taking his nails across your skin, marking you as his; his omega. You’re so hot for him and Aizawa thanks his lucky stars it was you that drew him to this rooftop; he’s wanted this, to have you bent over him, calling for him, for over a decade.
He grows smug when he watches your hands slide down the door, trying to get the most out of your experience. He wants to see your face, high with euphoria and lucky for the both of you, the base of his cock only just started to swell. Aggressively, he pulls out and spin you around. You cry out, destitute and needy for him to film you back up. Aizawa slams you back against the door and plants and hungrily claims your lips. You wrap your legs around him and slide onto him with ease, gasp into the kiss when he plows you deeper than before.
“You’re such a pretty little omega, aren’t you? So compliant when you know you need to be. I’m gonna fill you up to the brim, you know that?”
“Yes alpha. Mmmph, please do. I want you to deep inside me, I ~ahh~,” you cling on to his back, “I wanna have your pups!”
Aizawa’s eyes widen. He wasn’t expecting you to say that and even if it was just a spur of the moment thing, a carnal instinct, it sends him over the edge. The thought of you swollen with his child is far too delicious of a thought to let go of. He bites down hard in your scent glands and you shriek in pure ecstasy.
“If someone else so much as looks at you, I’ll tear them limb from limb! Do I make myself clear?”
That’s the alpha in him speaking and if you’d heard it any other time, you’d roll your eyes so hard they’d fall out of your head but in that moment you need his possessiveness like the ocean’s tides need the moon.
“Yes, my alpha,” you say through your panting. You feel yourself pool at your own compliance and Aizawa hisses in response.
“Fuck, that’s a good girl. Shit, kitten.”
His knot reaches its peak and he thrusts hard into your gushing cunt, pushing in to his hilt. He feels your pleasure in sheer electrifying waves as he follows your climax by shooting his seed deep inside of you. The both of you shake together, stuck and wrapped around each other’s bliss. You stay like that for fifteen long sensual minutes pulsating within one another.
He nuzzles against the soft sensitivity of your neck, preening and kissing you, whispering to you about how good you were, how proud he is and you’re too lost in your shattered mindset to understand what’s really happened until his swelling goes down and you’re able to slide off of him.
Aizawa wipes your sweaty forehead on the back of his sleeve and regards you knitted eyebrows with a similar expression. “Are you okay, kitten? I wasn’t too rough with you?”
You shudder when another cold front blows across the rooftop and Aizawa is quick to strip himself of his shirt and offer it to you.
“I’m… good. Really good,” you say, pulling your head through his shirt. As protective as alphas could be, nobody’s ever really actually asked if you were okay after a rut. You sigh. “Thank you… I should be okay for a couple hours now.” You avoid his gaze. “I think I should go shower.”
Aizawa presses his mouth into a fine line. Maybe you don’t understand what really just happened. You bonded with him. You’re his. “I’ll order some take out for you then. Or maybe…” he placed his hands under your chin, your eyes shine up at him. You Lee still in heat and you’ve sent him into a rut. If you really didn’t understand that you belonged to each other, you could end up inviting someone else over when your heat flares up again! He couldn’t just leave you, even if you asked him to. “I can take better care of you at my place. Run you a warm bath or… whatever you need. You just tell me what it is and I’ll get it for you.”
“Aizawa-,” you begin.
“ Omega, ” he says, placing a stern hand on your shoulder. “I’m taking care of you and that’s final. Do you understand?”
You part your lips, not completely surprised by his dominate nature after everything that’s happened. Aizawa might’ve not been the most agreeable person in the world but… he was now your person… and you weren’t actually torn up that he wasn’t going to leave your side.
You nod. Fucking Aizawa.