Archive of Our Own

Hizashi couldn't stop bouncing his leg even as the other passengers on the train shot annoyed looks at him. He couldn't help it, ok? How could he not be excited over sharing his Omega's heat for the first time?

Heroes wear scent blockers that while dramatically reducing what people can smell of their scent doesn't hide their scents completely like some scent blockers do. This is because seeing someone but not smelling their scent freaks people out on an instinctual level and while people can normally push down that response, in a high stress situation it makes civilians a lot more likely to freak out. So to keep civilians calm in emergency situations they let out the slightest bit of their scent, just enough to be smelled but not enough to be easily identified or tracked.

A few days ago he had noticed something different about his Omegas scent when he encountered him on his patrol, a difference that could only be noticed by someone who knew his scent like the back of their hand with the way his scent blockers concealed it. He had to give his Omega credit, having his scent be released just enough for him to tell while not letting anyone else know was a good way to ask him to spend his heat together without having to say the potentially embarrassing words to his face.

He had known his Omega for years but this was the first time he had gone into heat since they met. Alphas and Omegas needed to stop taking their suppressants and have a heat or rut once every couple of years for the sake of their health and while a lot of people on suppressants went off them once a year of course his work obsessed Omega would push it as far off as he could even when his Alpha was more than willing to make it pleasurable and fun for him instead of the painful and annoying experience he knew solo heats were for Omegas.

Ever since he had smelled the preheat on his Omega he had been waiting for it to start, and sure enough his Omega had missed his patrol today. He had cut his usual activities short to go back to his house and start cooking. He knew once he got there he'd be too distracted by his Omegas heat to do more then put something in the microwave and as his Alpha he refused to feed his Omega some instant crap, he needed something nutritious and healthy.

He then loaded all the food into a backpack along with some other supplies and had set off for his Omega's apartment. When the train arrives at the station near where his Omega lives he practically bounces out, unable to hold back the giddy grin spreading across his face.

The people around him shot him odd looks, probably assuming he's on drugs considering his behavior and how late at night it is but he can't find it in himself to care and immediately heads for his Omega's apartment, the route familiar to him with how often he takes it.

The door is locked when he gets there so he wastes no time pulling out the spare key he had made, his poor Omega was all alone in there suffering through his heat without the relief his Alpha will bring. He's just unlocked the door when he hears one of the neighbors open their door. He turns around to see the man he bribed into reporting on his Omega to him smirking at him.

"Finally gonna have some fun with him?" The Alpha sends him a perverted grin and he has no doubt that he knows about his Omega being in heat. He's abruptly glad that his Omega locked the door. If he didn't then any creep like that could have walked in off the street to take advantage of him in his vulnerable state.

He hums noncommittally in reply before entering his Omegas apartment. He makes a point of locking the door after him. Once he's inside he can't help but just stand there for a moment as he takes a deep breath, his Omega's scent covering everything so deeply relaxes his shoulders from their previously tense position, his grin returning as bliss fills his heart. It smells like home, like happiness, like his Omega. Walking over to the kitchen he opens the fridge and lets out a disapproving sound at the lack of fresh, healthy food in there. His Omega truly needs him to take care of him no matter how independent he likes to act.

He puts the food he made in there for later and turns around towards the bedroom. As he does so he can't help but smile a little wider when he sees the bathroom door. That Alpha, while disgusting, had given him very important information about his Omegas daily schedule. With it he had no problem slipping into his Omegas apartment while he was gone one day and putting his birth control in the microwave.

He can understand why his Omega would be hesitant to have pups, it's not uncommon for hero's children to be threatened due to their connection with their parent, but his Omega doesn't need to worry about that stuff, he'll protect both him and all their future pups.

The bedroom door was designed to not let scents out into other rooms just like every other door in this building so he can't smell his Omega but he can imagine just how good he must smell right now, the sweet scent of heat pouring out of him and his normal scent being so much stronger in his bodies attempts to attract an Alpha to get bred by.

When he opens the door the scent that greets him is so much better than he could have ever imagined, his cock becoming rock hard instantly. The only thing that's better than that delicious smell is the sight that greets him on the bed. His Omega is too lost in his pleasure to notice the sound of the door opening over the slick sound of the toy being pushed in and out of his soaking wet cunt at a brutal pace. He's facing the door and on his back, his legs spread wide to reveal everything and his eyes scrunched closed as he pants. The towel under him is soaked with his slick which is also coating his ass and inner thighs, making them shine in the light.

Hizashi drops his backpack to the floor at the same time as he releases his scent, the smell of an Omega in heat and an interested Alpha complimenting each other perfectly. His Omega startles at the scent and sound as his eyes shoot open to see him standing in the doorway. He can see his Omegas eyes dilate even from across the room, the scent of an Alpha pushing him deeper into heat.

An Omega in heat didn't immediately lose all reason, if they were kept away from Alphas or whatever dynamic the Omega was attracted to for their entire heat then they would be able to think and reason like normal. The only difference is that they'd be super horny and would feel miserable both physically and mentally for a week as their body called out for a mate. After all, it would be dangerous for an Omega without an Alpha to protect them to go so deep into their heats that they'd be unable to protect themselves or even do the basics of caring for themselves.

But when they did encounter an Alpha they'd go down hard. If an Alpha claimed them then their heats would hit them hard immediately as their inner Omega would assume that their Alpha would be available to care for them.

His Omega lets go of the toy and sits up but Hizashi can see the way his pupils have dilated as wide as they can go and the visible wave of slick that gushes out of him at the scent of an Alpha. Before he knows it he's on top of the other, pushing him back and holding him down even as he struggles and tries to push him away.

If his Omega likes to be held down and taken despite his struggles, to be so utterly dominated and helpless, then who is he to say no? Of course with the others heat this kind of play doesn't last long, his heat burning away every desire and thought besides getting fucked and bred and soon enough he's unable to pretend that he doesn't desperately want his cock inside him.

The hands that were digging nails deep into his skin slowly loosened their death grip before moving to wrap around him and bring him closer. He goes eagerly, happily sucking at his bonding gland. His Omega keens loudly, rubbing against his thigh as one of his hands goes to his crotch to try to free his cock.

He chuckles as he pulls back, ignoring his Omegas pitiful whines as he starts stripping. Once he's fully naked he looks down at his Omega, taking in just how wet he is for him and the way his glazed eyes are laser focused on him. His legs open wider for him and he pounces. He captures the other in a heated kiss, reaching down to pull the toy out of his Omega. The knot on the bottom catches on his entrance and he can't help but break the kiss and lean back so he can watch the way his Omegas cunt slowly stretches wider until all of a sudden the knot pops out of his body, the rest of the toy following quickly.

His Omega whines at the loss and he absentmindedly rubs at the thigh at his hip as he takes a moment to look at the toy. It's smaller than his cock and knot, something he can't help but grin about. Unlike this toy his knot would be big enough to truly lock him and his Omega together.

He looks back at his Omega and groans at the sight of his Omegas entrance gaping open obscenely from the toy, stretched enough to take him immediately. Diving down to kiss his Omega again, he rubs the head of his cock against the others entrance. His Omega whines into his mouth, trying to push his hips forwards to take him in.

He pins his hips down, keeping the head of his cock teasingly rubbing against the others entrance. Teasing an Omega in heat like this went past mean and straight into cruel with how bad their heats could get, but he couldn't help it. He wanted to be inside him so badly, but he had never seen his usually deadpan Omega look so bullied or desperate before. It was an addicting sight, the usually strong man brought so low underneath him.

His Omega whines and tries to buck his hips again. When that doesn't work he changes tactics and Hizashi yelps as strong legs wrap around his waist and force him forwards. He collapses on top of his Omega and they both moan in unison as his cock is pushed inside him, the wet warmth of his cunt squeezing around him.

His Omega feels so good around him that he can't help but thrust into him once before he could still his hips. The thrust punches a loud moan out of his Omega, which turns into a frustrated growl when the cock inside him stills.

He fucks into him slowly and softly, wanting to see more of his Omegas desperation for him. What he gets instead is a sudden burst of movement he's too surprised by to resist, his Omega throwing him onto his back before straddling him and holding both his wrists above his head with a single hand.

His Omega gives him an intense look as his free hand grabs at his cock. As he lines his cock up with his cunt and glares down at him Hizashi is suddenly sure that while he might not be the one getting penetrated, he's certainly the one that's about to get fucked.

He drops down, taking the entirety of his cock in at once. For a second he just sits there, purring lightly as the sensation of being so full chases away the pain of his heat. Then he starts bouncing on his cock, riding him at a frantic pace.

He can't help but lay back and allow his Omega to fuck himself on his cock, the sight of him using him to mindlessly chase after his own pleasure was beyond enchanting. They both let out moans and groans as he rides him, neither of them bothering to keep their sounds quiet.

Wriggling his wrists, he manages to free his hands but quickly grabs hold of his Omega's hand before he can try to move it away, lacing their fingers together. His other hand finds the others free hand which had been placed on his chest for balance and holds it in a similar grip.

After a couple more bounces his Omega cums on his stomach, clenching around him. He can't stop himself from thrusting up into him and his moan is entirely drowned out by his Omega's borderline scream as his orgasm rips through his body with all the intensity of his heat behind it.

They both pant, hips having stilled despite how Hizashi was still achingly hard inside him. His Omega collapses forwards nuzzling his face right against his scent gland, taking in his scent with every breath. He releases the others hands to hold the man on top of him, one hand going to cradle the back of his head while the other rubs gentle circles on his lower back.

The hand on his back slowly creeps lower until he has a handful of his Omega's ass, squeezing playfully. He's always had such an amazing ass, not that you'd be able to tell with the clothes he normally chooses to wear. He hums softly and regrets that he didn't bring over some of his own clothes to dress his Omega in. He'd look adorable in his Alpha's clothes, but on top of that with the difference in how muscular they were it would show off his body nicely. If it was tight on him it'd leave nothing to the imagination on his Omega.

A warm puff of air against his neck causes him to shiver as his Omega sighs. He sits up, the intensity of his lust dulled for the moment but nowhere near gone yet. The hand that was cradling his head had fallen to his hip when he sat up and is grabbed and guided to lay over his flat, muscular stomach.

"Allphaaa." He manages to slur out.

He's a bit shocked, he had thought the other was long since deep enough in his heat to not be able to talk.

"P-puuups!" It quickly clicks in his head and he can't help but freeze in shock, his Omega is asking him to breed him.

Before he can even register what he's doing he's flipped their positions once again, pinning his Omega down and slamming into his body again and again. Even while squirming in overstimulation he's moaning in delight, encouraging his Alpha deeper. Such a good Omega, so sweet and open for him and only him. Doesn't he deserve a reward?

"Yeah baby, you wanna have my pups?" This question is followed by loud mewling from his Omega as he clenches tight around him as if trying to get him to cum inside him on the spot.

He fucks his Omega harder as his inner Alpha gets louder and louder, determined to impregnate his mate. Even when his inner Alpha starts to take over he can't help but babble at the Omega pinned underneath him.

"Gonna breed you Shou, again and again until we have an entire pack of pups. Gonna make sure you're always full of my pups."

His Omega moans loudly as he keeps talking, a gush of slick dripping from him. He can't help but think about keeping the promises he just made to his Omega, taking him back to his territory where he'd always be safe and getting him pregnant again and again and again. Of course his Omega would have to stop his hero work, they can't risk their pups while he's pregnant and the time between pregnancies would be spent healing and caring for their pups. But that's ok because he'll protect and provide for them and their pups, his Omega won't need to be anything besides a mate and a mommy.

That fantasy and the thought of getting to keep his Omega all for himself has him throbbing deep inside the other and with one final thrust he cums inside his Omega, his knot fully inflating to bind them together, just like it was always meant to be.

Hizashi collapses forwards, crushing his Omega under him. He nuzzles his face against his Omega's neck and frowns as his face brushes smooth unmarked skin. Suddenly his inner Alpha isn't satisfied with just breeding the other.

With an overstimulated hiss he starts rocking his hips into his Omega as best he can while knotted inside him and is rewarded with renewed whimpers. He wraps a hand around his Omega's cock and starts pumping it as he rests his teeth on his Omegas neck. He can only hope that the pleasure he's bringing him can help distract him from the pain that's about to come.

Not wanting to draw it out he bites down hard, teeth immediately tearing through skin to pierce his bonding gland. His Omega convulses under him with a scream, trying to lean away even while pinned in place by both his knot and hand.

Interestingly, despite how he tries to get away from the pain it also causes the cock in his hand to twitch as he cums all over his own stomach, body squeezing down on him hard enough to coax another orgasm out of him, a second wave of his cum flooding his Omega's fertile body.

The sudden flood of hormones from tasting the liquid from his Omega's bonding gland, the deep instinctive delight his inner Alpha feels and his sudden orgasm all work together to stun him. When he starts to come back to himself a couple of minutes later to the sound of his Omega's no longer aroused whimpers he realizes his jaw is still locked in place, teeth buried deep.

He pulls back slowly, gently lapping at the wound a couple of times before leaning back to look his Omega in the eyes. The pain had brought tears to his eyes and a frown to his face but his pupils are blown wide and he looks just as capable of breaking his gaze away from him as he is as his features slowly soften, which is to say neither can look away, a softly intimate moment between a newly mated pair.

What eventually breaks this stare off is the feeling of something wet running down Hizashi's wrists. He glances down in surprise to see the scent glands in his wrists visibly swollen, pumping out enough of his scent that it's dripping down his wrists.

Oh yeah, he had forgotten about that part in all the excitement. He leans forwards to capture his Omega in a sweet kiss before gently pressing one of his leaking wrists against the wound. His Omega whines again but he just shushes him, holding him as close to himself as he possibly could. He knows it hurts but this is necessary.

The liquid in an Omegas bonding gland is initially scentless but takes on the scent of anything it comes into contact with. When an Alpha pierces the bonding gland they can put some of their scent in it and the rest of the fluid will take on their scent, making the bonding gland permanently give off their scent to show the world that an Omega isn't just claimed, but claimed by a certain Alpha. Unlike with their scent glands, an Omega can't control the scents coming from their bonding glands.

Once an Alphas scent has been put into the bonding gland it's near impossible to get it back out. There are surgeries to flush out the bonding gland but on top of being highly invasive and dangerous they rarely ever work, usually only dulling the scent for a short while.

When he pulls his wrist back he leans forwards and takes a deep breath, purring in pleasure at how strong his scent is coming from his Omega already. It doesn't cover up his own scent, but it's strong enough that everyone will be able to tell exactly who his Omega belongs to.

He carefully maneuvers the both of them so that his Omega is on top before wrapping his arms around him and pressing him into his chest as he snuggles him. Soon his knot will go down and they'll get back to getting his Omega pregnant but right now he just wants to show his Omega how much he loves him.

------

After seven days he wakes up to find the scent of heat is gone, his Omega's scent having gone back to normal. He groans quietly as he sits up, smiling as he looks at his Omega's sleeping face. Despite the movements and noises he just made his Omega is still deeply asleep, no doubt worn out from all of their love making.

He takes a moment to just stare at his Omega. His hair was even messier than usual, being the tangled rats nest you'd expect someone who had just spent an entire week having sex near constantly. He can't help but wince guiltily as he turns his eyes to the bandages all over his Omega's body. While drunk on his Omega's heat pheromones he'd taken a look at their mating mark and decided that one mark just wasn't enough.

He'd bit down all over his body, his shoulders, his hips and his thighs, leaving dozens upon dozens of teeth marks deep enough to scar all over his body. Humans were meant to be bit near their mating glands so mating marks usually didn't bleed all that much despite being on a neck, he couldn't say the same for the other marks he'd left on him. Besides the one he'd left on his Omega's neck on the opposite side of their original bonding mark, they'd all bleed a lot.

Though he feels guilty for hurting him like that in the heat of the moment he can't deny that seeing his claim all over his Omega's body was hot as hell. He's apologetically rubbing at his thigh near one of the marks when he hears the front door open and freezes.

"I know you haven't been eating enough so get up and get dressed, we're grabbing breakfast before class." is yelled as he hears movement in the living room. He scowls when he recognizes the voice as Midnight's. He growls silently at the audacity of this Alpha walking into his Omega's space right after his heat. He knows that the two don't see each other that way but his inner Alpha doesn't care, this interloping Alpha needs to fuck off.

He can hear her doing something in the living room, no doubt to give his Omega time to clean himself up. He bites his lip, unsure of what he should do despite his inner Alpha screaming in his head.

He could go out and fight the other Alpha, but he couldn't fight at full capacity without bringing the building down and that's not an option while his Omega is inside. Her quirk, on the other hand, would only be stronger and work quicker in a confined space like this. He's come a long way since the days he didn't know how to fight with anything except his quirk but he's still not confident he can take down the hero with only hand to hand.

He can't sneak his Omega out, the other would see him if he left through the door which would lead straight into a fight. He also couldn't get down the fire escape quickly enough while holding his Omega. The other Alpha wouldn't wait that long out there.

The only option, even as his inner Alpha screams against it, is to leave his mate here and escape. No matter how much he reassures himself he'll come back to get him soon his heart still breaks at the thought of leaving his mate all alone. The only thing he takes solace in as he looks over his Omega is that even at just a glance it's obvious he's been thoroughly claimed and even more thoroughly fucked, his cum still slowly oozing out of him.

He cups his Omega's face and kisses him deeply for a long moment, only breaking away when the sounds in the other room get louder, no doubt the other Alpha was starting to get impatient and would come over soon.

With one last quick rub of his wrist against his Omega's body he turns and jumps out the window onto the fire escape, glad he'd put on pants to grab the both of them dinner last night. He climbs down as fast as he can and is blending in with the crowd and walking away from the building when a terrifying roar rings out from the window he'd left open. It's the sound of an Alpha furious beyond words, a sound that tells you if whatever made them that angry is still nearby there'd be a murder.

The people around him flinch and scurry off in an instinctual panic and he can't help but stick his tongue out in the other Alpha's general direction before running off. A smug feeling welled up inside him and his Alpha was glad that this other Alpha had clearly gotten the message that his Omega belonged to him.

---------

Despite how hard he tried he didn't actually get the opportunity to get his Omega back until a month after their bonding. Everywhere his Omega had gone multiple heroes had followed, clearly not liking the proof that they were in love despite his being a villain and wanting to keep them apart. As annoying as that was, he knew it couldn't last forever. His Omega hated being crowded and being coddled so it was only a matter of time before he managed to sneak out on his own and they could be reunited.

That opportunity came in the form of his Omega grocery shopping by himself. He was wearing scent blockers so his Omega didn't even notice him as he approached. He took a deep breath of the others scent and had to fight back a coo.

When an Omega's child doesn't like their mother's Alpha partner they'd rub their scent all over them to try to cover up the Alpha's scent as much as possible. His Omega was covered in children's scents and though he couldn't tell for sure when there were so many of them he'd bet that there's twenty of them. It was just so adorable that his students would do that to him.

Then he caught some adult scents in the gordian's knot of scents all over his Omega and it abruptly wasn't cute at all anymore. The adult Alpha scents in particular raised his hackles and before Hizashi knew what he was doing he walked forwards and grabbing his Omega's neck, digging his thumb harshly into the mating gland.

His Omega gasps and melts back into him, becoming putty in his hands as his hormones go crazy. After bonding an Alpha could force their Omega partner to submit and do as they say temporarily by squeezing their mating gland and making their inner Omega take over. He coos and tucks his Omega into his side where he belongs as his eyes roll back and he barely manages to keep himself on his feet.

He looks up to see the aisle they're in empty and is grateful there's no one around to misunderstand what's going on. He slowly leads his Omega to the exit, supporting him as he stumbles. An employee sees them and they have a quick conversation, a You know how Omega's get when they're just starting their heat and Oh, I've got to get my mate home now and no one tries to stop them as they leave, a few of them murmuring about how that Omega is so lucky, to have such a caring mate.

He puts his mate into the passenger seat of his car and then hurriedly gets into the drivers seat, anxious to finally have his mate in his territory where he belongs after all this time. Every once and awhile while he's driving back to their home he'll reach out to pinch at his Omega's mating gland again, keeping him sweet and pliant for him.

He loved how feisty his Omega could get but he needed his Omega to be good for him and come along quietly or the heroes would make sure they couldn't meet again any time soon. When they get there, he doesn't hesitate to sweep his Omega up into a bridal carry to carry them into their house and then into their bedroom.

He gently lays his Omega on the bed and starts to undress him as he blinks up at him, still dazed. As he looks over his Omega's naked body he notices that the marks he left are a lot more faded than they should be, with the exception of the two marks on his neck which have stayed stubbornly scarred and clear in the way that mating marks always do. He lets out a quiet growl at the proof that those heroes are trying to erase their relationship, using quirks to try to get rid of the marks.

His Omega lets out a distressed whine as he does so and he wants to hit himself for not remembering that in his current state his Omega wouldn't be able to tell that he wasn't angry with him but rather with those heroes. He knows his Omega isn't thinking properly and won't believe it if he tells him he's not angry at him, so he looks around frantically trying to think of a task to give him to let his Omega feel like a 'good' Omega and 'prove' himself.

He spots something peeking out from his closet the slightest bit and grins, perfect. His Omega looks up sadly at him as he approaches with the restraints but complies instantly when he asks for his arm. As he ties him down and his Omega helps he makes sure to give him lots of praise and by the time all four of his limbs have been secured to the bed he's melted into a faintly purring puddle, happy to be good for his Alpha.

He kisses his Omega gently on the forehead before walking back to his closet to pick up something else that had caught his attention while he was in there. He walks back to the bed with a wicked grin, holding the toy up for his Omega to see. His Omega lets out an entirely different kind of whine at the sight.

He teases his Omega's entrance with the toy, occasionally letting the by now slick soaked thing rub against his steadily hardening cock. When he's as hard as he can get and dripping slick Hizashi slides it into him entirely with one fast thrust, bottoming out as his Omega gasps and arches his back. Pressing a button at the base of the toy he watches as his Omega gasps and squirms, the knot growing in him obviously feeling good.

Once the knot on the toy inflates completely he stands up and walks away as his Omega whines at being left alone. The toy was smaller than him, but it would keep his Omega wet and ready for him when he was done doing some things. The first thing he intends to get done being to get those awful Alpha scents off of his Omega. It takes him a bit to find the special scent removing soap but when he does he immediately goes back to the bedroom where his Omega is writhing in pleasure in their bed.

It takes a long time, a lot of scrubbing and the entire bottle of soap to remove the stench that was so stubbornly clinging to his Omega and when it's finally off he takes a deep breath, taking in their combined scents coming from him.

His face scrunches up in confusion as he smells something ever so slightly off about his Omega's scent. It's so slight that even he's having trouble figuring out what it is. He buries his nose into his Omega's neck to take a long sniff as his mind turns over all the things that could change an Omega's scent. He's already smelled the difference bonding had on his scent and it wasn't this subtle, it didn't smell like sickness, it was hard to tell because it was so faint but it smelled a bit milky to hi-

Oh. Oh.

His Omega is pregnant with their pup.

His eyes dilate as he stares down at his Omega in wonder and awe. He wonders if his Omega has even realized yet, the father of the pup was often times the first one to pick up pregnancy pheromones due to how sensitive they were to their mate's scent.

Suddenly none of the other things he had to do mattered at all, he needed to stay right here by his side, his Omega, his mate, the mother of his children! Underneath the happiness is an arousal stronger than he's ever felt before, even during his ruts. His hard cock brushes against his Omega's thigh as he climbs up his body and Hizashi feels like if he's not able to bury himself in his Omega right that instant than he'd die.

He fumbles with the toy, being gentle despite his impenitence. He'd rather die than hurt his pregnant mate. After he pulls it out he wastes no time lining himself up with his Omega's entrance, forcing moans out of the both of them as he pushes in.

Pausing for a moment to let his mate adjust to him being inside him, he decides on the spot that to celebrate he'll make the heat they shared together seem like a quicky in comparison.