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Attending UA—the epitome of hero academia—naturally came along with some incredible advantages that, unfortunately, were not afforded to those who failed to meet the requirements needed to be accepted. Aside from state-of-the-art technology, a brilliant and highly-esteemed staff of teachers and faculty, a sprawling landscape housing numerous forms of training grounds for combat and rescue situational replications, and a long-standing reputation for molding the minds of some of the greatest heroes, UA was the leader in cross-dynamic education.
In a few parts of the nation, and indeed much of the world, schools were often split based on secondary gender. Years of “traditional” thinking by prejudiced and ignorant politicians had them separating alphas, betas, and omegas from as early as middle school. Luckily that had changed when UA was first founded and given their success at raising and educating heroes of all genders, most schools had followed suit.
It was because of this pioneering that the present-day UA had blessed Tokoyami Fumikage with the omega of his dreams, the light of his life, his star-dappled beauty, Midoriya Izuku. Within a matter of weeks, they had fought side-by-side, studied in the same halls, and kissed for the very first time while the sun set behind them.
It wasn’t long before their blossoming mutual love turned into something profoundly soulful that continuously shocked Fumikage to his core. His bond mark didn’t take long to grace that lovely little neck and the mingled scent created by their union was easily the most wondrous thing in the world. Here was Fumikage on the path to becoming a hero with his gorgeous, powerful, omega rushing in front of him boldly but throwing back a scarred hand and an easy grin, wordlessly saying; hurry now, you belong beside me, I am yours, you are mine, we will take on this great big world together.
And it was Fumikage’s pleasure—his honor, his pride, his glory—to acquiesce, to grab that hand and hold it tightly, to let his worries evaporate in the blazing heat of those emerald eyes and let his heart be tethered by the red string of fate that tangled itself in around that delightful, disarming, dauntless young man.
And it was all thanks to UA ’s accommodating and welcoming nature towards all genders that they were allowed to meet and begin such an amazingly supportive and loving relationship. However, there were some drawbacks to housing every dynamic under one roof. Specifically, between alphas and omegas.
UA was strict and diligent about ABO discussions and relations; bullying, sexual harassment, and stereotyping based on gender were topics addressed from a multitude of angles and those deemed incapable of respectful behavior were deemed equally incapable of becoming heroes at UA. Aizawa’s “logical ruse” regarding expulsion from their first lesson became something altogether real and true when he was witnessed forcibly removing would-be heroes from the premises after their uncouth conduct proved them to be overtly prejudiced or perverted.
However, given the sheer amount of students attending UA and the varied nature of their class schedules, some unsavory beings were harder to identify and reprimand. Thus, Fumikage found himself racing through the empty halls of his school towards the scent of distressed omega. And not just any omega, though as a hero he would have sped towards them regardless, but HIS omega. His beloved Izuku, with his mild and soothing scent of mint and sunshine, was producing an acrid fume that had Fumikage gritting his teeth and Dark Shadow’s claws sporadically appearing to tear at the air in front of him.
Fumikage felt foolish; despite having mated and marked Izuku, he hadn’t retouched the bond mark itself in some time, in part out of concern for overwhelming his mate with the renewed sensation and also because their time together had been brief as of late. In between internships, coursework, and commitments to friends and family, the two lovers had only managed handfuls of moments and nights together. Their interactions outside of school had been intimate, of course, but gentle and nurturing.
Re-establishing a claim was anything but, it was a devilishly depraved act that would very likely trigger their respective rut and heat early if not carefully handled. And unplanned cycles meant more coursework and varying levels of judgement from teachers and peers and a greater chance of impregnating Izuku which—while thoroughly appealing in several ways to both of them—would make school and hero work a bit difficult. But there were contraceptives and Izuku had been taking his consistently meaning that if it really was necessary…
He shook his head roughly and released a low growl that reverberated in both his mouth and chest, Dark Shadow’s anger merging seamlessly with his own, noting with disdain and relief that the scent was stronger now. Izuku was close, but that also meant that whatever alpha was causing the undercurrent of rust and what Fumikage imagined the taste of seltzer water would smell like if it had a real odor; sharp, bitter, and cloying.
Following the unpleasant scents, Fumikage came upon a sight that made his growl deepen into a bone-chilling echo of deadly threat, snapping the dull gray eyes of a tall brunet alpha away from Izuku’s own fearful ones right before the offender was snatched up by Dark Shadow and thrown forcefully against the opposite wall.
Apparently, the quirk of the other boy was something involving paralysis because Izuku hadn’t even twitched despite the terror in his eyes as they flicked to his boyfriend when he first appeared but became a flurry of motion when the brute was wrenched away.
Izuku had collapsed to his knees and began rubbing furiously at his collarbone and cheek with his own wrists’ scent glands. Teary and murmuring about feeling dirty, the omega was trying to cleanse himself as quickly and efficiently as possible. His blazer and tie lay on the ground beside him, rumpled. His shirt was open to the third highest button, revealing far too much skin to that bastard.
Fumikage angled himself to cover the image of Izuku’s crouched form completely as he glared at the disgusting abomination who not only dared to get close to an obviously taken omega but had been touching his Izuku as well. Dark Shadow wasn’t just pressing the other alpha’s torso against the wall now but was pressing him into it with the force of his and Fumikage’s combined rage.
Stepping forward and drowning the hall with his own oppressive pheromones, Fumikage managed to soothe Izuku’s own frantic mind as much as he was terrifying the omega’s harasser. Said brunet swallowed roughly, wheezing out an accusation masquerading as an apology, “sorry…but…le-leavin’ your omega to wander ‘round like that…end of the day…mark not fresh…face all open and…innocent…hell what was I supposed to do…look at ‘im—”
His words were cut off as Fumikage raised his own hand to latch onto the neck before him and tighten minutely, part of Dark Shadow’s form slipping off of the brunet to wind around Fumikage’s arm and strengthen the force behind the action.
Izuku crawled forward, pleading, “Fu-fumi, you sh-shouldn’t hurt him. You mi-might get in trouble. He’ll be expelled for his a-actions and—”
“I am an alpha. I am your alpha. It is well within my right to rend his limbs from his body. Those hands touched you, Izuku, and I would like to see them torn off for showing such deliberate disrespect towards you and our bond.”
The omega shivered from the sound of that voice, darker and more possessive that he had ever heard it. Izuku tightened his thighs, preemptively trying to staunch the slick that his inner omega—despite his own rational desire to stop his boyfriend before this escalated even further—was proud and eager to show it’s appreciation for such an open display of power and domination.
The bird hybrid had never, not once, used his proper alpha voice to direct. It was not only prohibited in the school by everyone except teachers during an emergency but Fumikage genuinely never had the desire or need to use it in the past. If there was something that could not be executed through his own will, it wasn’t warranted. And Izuku followed whatever commands he gave, regardless.
Fumikage had long claimed Izuku as his own and was full of infinite trust and devotion to the other, which he knew was mirrored perfectly. Izuku would never betray him, of that he was sure, but this unshakeable faith was not extended to anyone else.
However, Izuku was a beautiful and strong omega, unwittingly drawing the attention of nearly everyone he came across. Even other mated students expressed a particular fond appreciation for him, not a genuine interest in being with him, but a desire to be his friend and bask a little in his illustrious glow. Fumikage had let himself remain content with bonding his partner but clearly, that wasn’t enough for certain determined scum.
His growls were constant now, loud and abrasive and all-encompassing. The eerily hollow quality of it filled the air and the pinned alpha was now visibly quivering in honest fear. A shaky hand found it’s way onto Fumikage’s shoulder and he tilted his head to see his flushed and wide-eyed love.
“Alpha, please. My alpha. I just—I don’t want to be here anymore. Let’s just go, okay? Please. We can inform the teachers and he’ll be properly punished.” A tendril of mint and sunshine wound around Fumikage’s head and loosened the tense lines of his back and arms. The growls died down gradually and the brunet against the wall released a whimper, which prompted Fumikage to pull his hand back and watch the gasping male sink down to the floor.
Without stepping away from Izuku, he leaned down slightly and had one of Dark Shadow’s talons lift up the man’s face as Fumikage instilled commands using his alpha voice, “You will report your actions directly to your own class teacher, Aizawa, and Nedzu. You will have them corroborate your statements with the cameras. You will inform them that had it not been for the generous, caring nature of my beloved omega, I—as his alpha—would have caused permanent and irreparable damage to you, of which I reserve the right to do should I ever find you approaching him in such a manner ever again. Have I made myself clear?”
The boy nodded, not believing himself capable of speech. Whether this was due to his lack of air or his fear wasn’t easily determined, but it seemed to satisfy Fumikage regardless. His glare was concentrated on the harasser, though he stepped back and Dark Shadow gently guided Izuku to rest under his mate’s arm. The hand Fumikage placed on Izuku’s waist felt as possessive as his voice had been earlier and Izuku found himself relaxing in the tight hold.
As they turned and Fumikage led him away, he let out another parting remark, “It would be wise to notify Aizawa that Izuku and I will be not be attending classes for an indeterminate amount of time, though he will likely assume such himself.” Without further ado, the alpha whisked away his bonded mate.
********
Waiting until they reached either of their homes was not an option. Fumikage’s home was too far to walk to and if he was forced into an enclosed space with Izuku with this much rage, this much desire to covet and express his control over his omega, he’d end up destroying the subway station and mounting Izuku in the wreckage for everyone to witness. A pleasant enough thought, but one he could not act upon in good conscience.
So instead, Fumikage directed them towards Ground Beta. Izuku was confused but didn’t protest, especially when Fumikage growled at their pace and simply used his quirk to lift Izuku and start jogging towards the area. In fact, that move had actually made the omega’s scent spike a bit. Good, he was enjoying this. He’d enjoy what came next too.
Though some areas of Ground Beta had not been remade from the most recent lessons conducted among the tightly condensed urban setting, most of the streets and buildings were in tact. Selecting one based on it’s proximity to them and the vaguely residential vibe it gave off, Fumikage was rewarded with a studio apartment-like interior complete with a couch, bed, small dining table, kitchenette, and a few doors that may have been bathrooms or closets or exits.
None of that particularly mattered to him save for the bed, which he tossed Izuku down on. The shorter boy gasped at the sudden motion and he moved to rise off the bed when Fumikage made a low, deep croon that had the omega flattening himself back on the cheap sheets and widening his hips slightly.
Approving the motion, Fumikage began divesting himself of his clothes, red eyes never leaving green. Izuku’s mouth parted and he released a slow, shaky breath before asking softly, “Fumikage? Are you, um, that is are we going to…?”
Chest now on display as he dropped his shirt someone behind him, Fumikage spoke for the first time since they left the main building, “Omega. I have been too lax in my duties as your alpha. I will devote this time to remedying my behavior.” Izuku shivered on the bed and though his lover’s words had not be oriented as a question, he nodded to himself nonetheless.
Just when Izuku went to remove his own top, however, Fumikage was suddenly above him, pining his wrists up behind his head, slightly cold beak pressed against the scent gland on his neck as both a threat and a promise. “Mine,” the alpha rumbled, “I get to undress you. I get to unravel you. It is my right. You. Are. Mine.”
The words were emphasized by a tighter grip around Izuku’s trapped wrists and the feel of the tip of that slightly curved beak tracing around his scent gland, following the motion of the swallow Izuku couldn’t hold back, clipping small amounts of skin just enough to leave marks, some which stuck out more than others, tiny beads of blood forming to be wiped away instantly by a long warm tongue.
Izuku moaned and twitched his hips upwards, already feeling himself start to slide into that haze of pleasure that being with Fumikage like this always brought. But this…this was something different, something new and unexplored. Fumikage had expressed jealousy before, they both had, but this was more bold and burning, a strange fire that lingered in the alpha’s eyes, his touch, his voice. It felt dangerous and thrilling to Izuku, who spared a thought about his somewhat masochistic tendencies before he heard and felt his shirt being torn. He keened, unreasonably pleased to note that Fumikage hadn’t even used his quirk, simply slid his hand down to grab the shirt and wrenched at it, buttons disappearing as quickly as Izuku’s breath was leaving his lungs.
The poor boy was panting already, desperate even after only a hint of Fumikage’s plan for him. His pants were next, the alpha’s deft hands leaving his wrists to rest on Izuku’s waistband for just a moment. Without hesitation, Izuku obeyed the wordless command and lifted his hips high, allowing Fumikage to pull down his pants and boxers in one smooth motion.
Exposed to the air, Izuku’s small cock, already slightly hard and a little flushed, jerked and he whined. Instead of his usual soothing hushes, Fumikage simply began stroking his mate steadily, enjoying the way he opened his legs further and blinked up at him, face blatantly needy.
“Good boy, my darling omega. This is how it always should be; you underneath me, taking whatever pleasure I offer. Smelling so deliciously of desperation and me. Because you belong with me. You belong to me, just as I belong to you.”
Izuku licked his lips and whimpered, “Yes, alpha. You’re mine. I’m yours.” The hand that was stroking him swiped at the precum gathering at his tip, then brought it up to smear over one of the teen’s nipples before pinching it. Izuku squirmed in place and arched into the sensation, starting to plead. Fumikage just let him go, then pinched him again, voice low, “Repeat yourself.”
“Ah! Y-yes alpha! You’re m-m-mine and I’m y-yours. All yours!”
“Excellent, love. You listen to me so well, don’t you? Such a good boy. Even without me using that voice. But we both know it’s something you desire greatly, now that you’ve gotten yourself a taste for it.”
Fumikage enjoyed the flush that spread across freckled cheeks and dipped down that luscious neck and chest. When Izuku remained silent, however, the taller of the two dug his fingers into a sturdy yet soft thigh. Moaning at the pleasurable roughness, Izuku spoke up, “I r-really do like it, Fumi. I love it. Your voice, nnngh, I…I didn’t want to, but when I first heard it back there I nearly got…I almost…”
“Finish your thought, omega. I want to hear you.”
Another keen and now Izuku was actively leaking precum and another telling fluid began to slip out onto the sheets below him. Embarrassed and aroused beyond belief, Izuku lifted his hips up again, showing off the little stain he was making on the bed, “I nearly got slick. I’m wet now. I’m so wet, Fumi and it’s just getting worse the more you talk and do this, please alpha, please, just please.”
Green eyes were leaking tears at their corners and with a pleased rumble, Fumikage pulled away and tossed off his pants and underwear before hovering predatorily over her omega once again, this time bracketing the smaller boy in with his legs and arms, thick cock proudly hard just inches above Izuku’s own. It made the omega whine again and lick at his lips, imagining that that healthy knot would soon be inside of him.
Even though he released even more slick at that thought, he wanted to suck at the knot in front of him until it swelled up and he could play with it using his hands until his alpha drenched him in his essence. He’d smell like Fumi, could lick at his own lips and taste nothing but his alpha, and it would satisfy him to no end. He hadn’t realized he’d been mumbling all of that out loud until Fumikage was lifting his legs straight up by his calves and rubbing himself against soaked thighs, “Not yet, my decadent siren. First I’m going to take you, take what is rightfully mine, and reinforce your bond mark. Everyone will know exactly how thoroughly I take care of you. No one will doubt our union ever again.”
Izuku shuddered and he clutched the sheets in his fists, feeling his hole twitch and release more slick. It was as if he was in heat and honestly, given the dizzying array of hormones and emotions he had been subjected to today, it wouldn’t surprise him. Perhaps that was why Fumi had made that remark earlier about them being gone for a while. Fumikage squeezed at Izuku’s legs and tugged him closer, angling his lover’s ankles to rest on his shoulders so that Fumikage could continue staring down at him.
The slide of his cock against hot, wet thighs was interrupted in a way that had Izuku begging wildly, as Fumikage grasped himself and pressed the blunt head of his hardness against his mate’s hole. “You won’t even need stretching, will you? Not while you’re this slick. This desperate for me. Listen to your frantic pleas, the fluttering of your entrance so ready and eager to accept me inside.”
He pressed harder and Izuku choked around a half-formed cry of his name as the tip breached him. “Gods, ohhhhhhh Fumi, alpha, alpha, alpha. Mmmore, more!” Fumikage’s hands slid down to grasp strongly at Izuku’s thighs and tilt the omega up just slightly before he slid himself inside completely, a fluid hard motion that made them both cry out loudly.
Immediately, Fumikage set a rough pace, driving in deep and firm. Izuku was damn near weeping now, rocking forward on each thrust and keening whenever his prostate was hit. It was sporadic, and the omega couldn’t tell if that was done on purpose to make him moan and beg and cry even harder or if Fumikage was truly so focused on simply taking Izuku that he couldn’t control when or how harshly he drove into that spot.
Either way, it was turning the omega and the bed under them into a mess of salty tears and slick. The sheer aggression in Fumikage’s motions, coupled with the sight of his intense red eyes and gnashing mouth as he grunted and showered Izuku with praise and promises of fulfilling his duty as an alpha, was making the omega lose his mind. When he felt the pressure of a swollen knot slap against him, he couldn’t stop himself from begging.
“ALPHA! PLEASE, I’m so desperate, ah-ah-FU-ha, ah-Fumi. Let me come, let me come. T-take, mmnnnn, take your knot. I c-can, I can do it, I oh gods, let me do it. I’ll take the whole thing, just fuck int-into me with your knot.”
“Fuck, Izuku! My omega, all mine. You want this knot? Want to have it fill you and pump you with my seed? Plug up this tight, pretty hole of yours until your body accepts my essence, that’s exactly what you want. No, it’s what you need, isn’t it? Tell me, omega, tell your alpha how much you need it.”
Izuku strained his neck, displaying his scent glands and bringing more tears to his own eyes as the motion yanked his hair in Fumikage’s tight grip. But he loved it, loved his Fumi, loved, loved, loved loved—“So bad, alpha. Love you so bad, so much! W-want your knot, your cum, your pups, your everything! ALPHA, yes! GIVE IT TO ME! I need it, I NEED it! My alpha!”
Fumikage threw his head back and made this impossibly depraved combination of a roar and moan and then shoved himself roughly forward, his knot pressing and then sliding fully into Izuku with a wet, sultry sound. The alpha’s grip on Izuku’s thighs slacked and with a grunt, he pushed both legs to fall on either side of him and crouched low, elbows by Izuku’s shoulders and hands fisting the curls right above his neck.
If Izuku thought his mate was wild before, he was absolutely feral now, hammering forward directly into the omega’s prostate again and again until his vision whitened. He convulsed rapidly around the knot and cock inside of him as he came abruptly, the increased tightness and movement trigger Fumikage’s own release. Pushing as deeply as he could and piercing over the original bond mark with his teeth, lapping at the resultant blood, he let his hips twitch repeatedly as wave after wave pulsed into his omega.
Izuku rolled with the motions, hiccuping and gasping each time he felt more pressure against his prostate and walls. Fumikage was filling him to the brim, locking them together, trying to ensure that the omega would accept him completely, would get pregnant. Izuku moaned low and soft, throat too raw to put his pleasure into actual words, but when Fumikage calmed down enough to angle them into a more comfortable position, Izuku let his head loll to face him and smiled wobbly.
Fumikage’s hand pushed away sweat-drenched curls before he wrapped his arms tightly around his mate, “You did wonderful, love. My resplendent omega, obediently and enthusiastically taking my mark again, taking my knot…you’re the single most magnificent being, did you know that?” His hands drifted to rest low on Izuku’s belly, the thin and tattered fabric of the torn shirt doing nothing to hide the gentle heat of his palms.
Voice appreciative and a little awed, “You’ll look so lovely swelled up with pups. Carrying them around with the sort of vibrant strength and proud grace that only you seem to be capable of. And they’ll be equally beautiful, I know without the hint of a doubt. Our little loves, our darlings.”
Izuku swallowed and though he had thought all his tears had ended, he felt the tell-tale burning behind his closed eyelids before he opened them and pressed a kiss against the feathers just before Fumikage’s beak. His own hands covered his alpha’s and he nestled further into the welcoming embrace of his protective, possessive mate.
After a few moments of silence where the two simply enjoyed their closeness, Fumikage’s beak found it’s way to the bond mark again and he licked a long, slow line against it. Izuku moaned again and glanced back at him slightly bewildered. Though Fumikage could not smile, the dark amusement in his tone implied that he would have if he could, “Oh, beloved. We haven’t even begun.”
The omega flushed, getting even pinker when he felt Fumikage start rocking slowly into his already full channel. He, there was no way, Izuku couldn’t possibly take any more inside of him, he’d start leaking, they’d be a mess, there was just no way.
And yet his hips were pressing back against his alpha and his mouth was dropping open, saliva already beginning to gather in his mouth as he pictured exactly that—being filled to the point to bursting, his own slick mixed with his alpha’s seed sliding out of him, wetting Fumikage’s cock further, soaking the already messy bed. He whined, a long sound from the back of his throat that Fumikage reached up to feel the vibrations of with a hand. “Good boy, let’s see how much more you can take, hmm?”