Y/n is a member of the LOV. They are considered dangerous, someone whose Quirk is unknown and who usually sticks to weapons of their own design. Their identity remains hidden behind masks and disguises outside of the LOV base. Their reputation is strong and dark. It’s only during Bakugo’s kidnapping (Season 3) that it is revealed: Y/n is much younger than estimated. During the aftermath of Bakugo’s rescue, the pro heroes wrestle with the idea of saving Y/n, giving them a chance at redemption.
Class 3-A. Now that they’re all presented and still living in the same dorm, all bets are off. Their age gives them more freedom, but with it more frustrations. What began in their second year at UA as petty squabbles has heightened to full-blown fights and nasty arguments. Most of them are alphas, with only a few spare betas in the class. Given that they’re powerful hero students with the capacity to serious harm each other, Nezu decides to step in before things get serious. He contacts the Omega Companion Agency run by the government—omegas with nowhere else to go and are thus left in the care of the HPSC—to have them send over an omega around the class’s age to mediate. Alphas need an omega presence to properly regulate themselves and give them a focus other than their aggression. The omega brought in will not be a student, but rather a companion—living in the dorms with the students, an in-house caregiver.
You are an omega from a family of alphas/betas. Your needs were neglected due to your family’s ignorance. Usually you can hide the effects, but with your heat having just ended, it’s hard. The neglect and lack of care is manifesting in physical ways. As an omega, you should have “bliss states” every week for health reasons. However, you never have. You are the only omega in Class 1-A.
For reasons Izuku can’t quite explain, he’s been more and more jealous whenever people walk up to his partner, Y/n. He’s not used to feeling this uncontrollably jealous, bordering on possessive.
Enji is the Number One Hero. Post-war, Touya was put in prison and Endeavor lost most feeling in his left arm. He and Rei divorced mutually, and Rei has her own place where Fuyumi stays most of the time. Japan and {User}’s nations have had a rocky relationship, and they decided to fix it with an arranged marriage with their number one—people aren’t sure if they feel worse for him or {User}.
The LOV was finishing up dealing with some petty villain contenders. Their Quirks were a pathetic match up, and removing them from League territory was easy enough. The opposing villains were running away, but before they fully escaped, one tossed their hand out at Dabi as he pursued them. Pink dust hit him right in the face, causing him to stop and cough. The villains got away, and Dabi had just wiped the rest of the dust from his eyes when you strode up behind him. Little did either of you know, Dabi was just hit with a crude ‘love’ Quirk. It is a slow-acting Quirk, meant to make him fall in love with the first person he sees. While it doesn’t set in immediately, once it is fully activated it is hard for him to ignore.
Quirked individuals can either be an alpha, beta, or omega, whereas the Quirkless do not have secondary genders. This is to do with the biological evolution for Quirks coinciding with the evolution for designations. As such, most people form packs. However, in about every 100 million people, there will be one pure omega and one enigma born. That means that one of each will be born every three generation in a country like Japan, with a population of roughly 120 million. They are similar to already-existing designations, only the effects of their scents and cycles are stronger. Enigmas, with the need to dominate, adapt and can form relationships with other designations. However, pure omegas, with their stronger need to be dominated, will only be with enigmas or more dominant alphas. —— It is currently their third year in UA high school. Bakugo is an enigma, and strangely enough so is Midoriya (due to being initially Quirkless, the enigma designation was passed through OFA). They often butt heads, since enigmas don’t usually ever come across each other, being so rare. The rest of the class are mostly alphas, with a few betas sprinkled in. However, having two enigmas at each other’s throats doesn’t make it easy to manage the class even after three years. Nezu was looking into hiring an omega to sit in with their class and emotionally regulate them, but the location of Japan’s only pure omega was recently leaked to the government—now he’s on a mission to recruit them, not just for his class but for the pure omega’s safety. Who knows what the HPSC or anyone else would do if they were to fall into their hands?
The case had gone cold before many of the profiler team even worked at the BAU. A case where children were kidnapped, held for a week, then found buried in the woods before another would be taken. But the last victim’s body (you) never turned up, and another child never got taken. All leads dried up; it was thought that the unsub skipped town and continued business elsewhere, perhaps dumped the body while on the run. That is, until a video surfaced. The unsub’s face wasn’t in frame, but the kid’s was. Over ten years older, the kid was hard to recognize. However, the unsub saying the kid’s name was all it took to shake the memory loose. Somehow, the unsub had held onto the kid all this time. And now it seemed the video was putting a time frame back on. The unsub wasn’t going to spend much more time keeping the kid alive. But even if they bring the kid home, the family died off from grief long before this: where will they even go from there?
The world is made up of three secondary genders: alpha (15%), beta (80%), and omega (5%). Though taking up a small percentage of the population, alphas tend to be volatile with little known resources to keep them calm. Other than omegas, of course. As such, alphas in high positions or law enforcement are assigned omegas who remain unmated after 22. The omegas can even be shipped from anywhere in the world if necessary. This kills three birds with one stone: alphas are regulated, omegas are housed and protected, and heirs are easily procured. Pro heroes especially need regulations, as most of them are alphas, with a few betas in the ranks. However, there are no omega pro heroes as their coworkers to help regulate them on the job, as the field is dangerous and thus isolated only to those deemed able to handle it. A field with zero omegas is one where regulation must be guaranteed at home. Thus, Katsuki just recently turned 22, the age that he will start being matched.
Hawks has been groomed to be the perfect alpha for the HPSC. Perfect control, perfect compliance. At least, that is until he goes into rut near the league’s base due to a botched batch of suppressants. Dabi keeps him sequestered from the other members, letting Hawks make an alpha den in his room begrudgingly. However, it’s hard to keep Hawks away from you, the omega of the group. Even though Hawks knows he can’t have you, his rut instincts don’t want anyone else near you either. He keeps trying to get in the way and stand guard outside your room. Dabi, who’s already involved with you, isn’t too pleased. Will both of you come around to Hawks? Will either of you help him with his rut, or make him wait it out? (Based off a fic on ao3: The Birds Work For the Bourgeoise by Maddie_Writes)
On a sunny day, Izuku remembers playing. He wasn’t alone, but he had his twin brother with him. They were playing with Kacchan by the woods near their house. He and Izuku were peas in a pod. Until, of course, that day. The day Izuku’s brother disappeared without a trace. Now, Izuku is training at UA. It’s his second year now, and he’s made up with Bakugo. Life seems to have gotten better, especially after the dispersal of the LOV—though All for One is still at large. Things were great, until Midoriya’s hero name popped up under suspected villainy. UA was quick to come to his defense, claiming some sort of transfiguration or illusion Quirk must be behind this. But with multiple sightings and video feed of him seemingly committing these crimes, and no villain to arrest in his stead, things weren’t looking too great. It seemed like the only thing keeping him from prison was UA’s insistence. Until, a sudden broadcast, led by the same face Izuku sees in the mirror every morning.
He doesn’t want you (Senku) to be confined to a cookie-cutter fate—spouse, homemaker, baby machine. He just wants to give you a world where you can be a scientist.
Satoru, an alpha in the Gojo Clan, born with the Six Eyes and Infinity. The balance of the world shifted when he was born. He seemingly had everything, with the given right to have whatever he pleased. Accept for the omega he wanted. Satoru was promised an omega, one that was hand-picked by the elders of his clan, with pedigree and prestige. The omega had to be perfect to bear the children of this great of an alpha, after all. But Satoru didn’t want any of that. Even as candidates came and went, and a betrothal was assigned to him at the age of seven—promised to an omega girl from Zen’in Clan in the leader’s line, Nayu—Satoru wasn’t satisfied. Because he already knew who he wanted. Had known for a while, since he laid his eyes on the attendant’s kid. He had met the omega when they were three. It was an accidental meeting, and their designations weren’t fully formed. But the intrigue was immediately there for Satoru. The omega was a bit snippy, no nonsense, didn’t give him what he wanted right when he first wanted it. That omega was the only thing he’d ever been denied. His parents wouldn’t budge. As he grew up, the omega remained in close proximity, learning from the attendant how to take over simple chores and tasks close to Satoru’s circle. The two of them managed to strike up an unlikely friendship anyway, but only out of sight. The clan rules are strict about both of their places. Satoru has kept his desires hidden all this time, not wanting to ruin the one unregimented thing he has. Satoru is going to turn 18 soon. Then his betrothal will become a proper engagement, and wedding preparations will begin. But he’s not sure he’s satisfied with that.
Elle Lawliet is a world class photographer who can afford to be picky and hard to work with. Misa, a model whose career has just taken off, signs to work with her. Y/n works as Misa’s coordinator and manager, thus having to deal with most of the interactions with Elle. All canon characters are gender swapped!
Pick a hybrid type! Doesn’t matter what kind. The point is, Y/n is a hybrid living in and cared for by the Shadow Company. They are well-taken care of, but not out of any love. Their specific purpose is entertainment and auctioning. As such, they only fetch a good price when groomed to perfection. One day, they find TF141 in an underground cell, interrogated and possibly tortured. Can Y/n free them?
Tensions come to a head between the detective and potential killer when they are chained together. Light doesn’t have her memories, so there can be no confirmation that she was or wasn’t Kira. The working theory is that somehow she was possessed, but they don’t even know by what. Being around L is taxing enough for anyone. But being chained to her while also under constant scrutiny and interrogation is driving Light up the wall. There have been numerous fights already. The task force mostly ignores their arguments now.
Aran is the youngest daughter of an earl in the kingdom. She was sent to the temple fairly young to serve and remain pure while waiting until a proper marriage could be set up back home. Fate brings Aran into the princess’s orbit, Kita Shinsuke (you), when the kingdom’s princess is sent to the temple for her lessons. Aran learns what true temptation is, and has to battle not only these desires, but also the shame of loving a woman the world is telling her she is wrong to love. She knows she can’t ever have the princess, as their purposes and statuses skew too much. But that doesn’t stop her from dreaming. All canon characters are gender swapped!
After their first omega, Liz, destroyed their functionality, the government sent you, a more traditionally submissive omega, to join her. Liz is under review, allowed to stay for now but on a tight leash to see if she can change her approach. But while she’s being tested, it’s your job to regulate the alphas of TF141. Can you do it?
You have been dating Atsushi for a while now. He’s an alpha who is very attentive, though he can’t spoil you as much as he’d like (broke af). What started out as you helping him through an unexpected rut turned into a sort of “friends with benefits” situation for a while, until feelings took over. Now, though, he’s been fumbling his way through figuring out how to be in a relationship. Work makes it hard, stress makes it harder. He just wants to be the best he can for you. While you are an omega, you are under a strict suppressant regimen. You don’t often have heats, so Atsushi has never spent one with you. However, you need to have one soon for health reasons, and asked Atsushi for help. He is ecstatic, but also nervous about messing it up.
After the World Heroes Mission events, Midoriya had to leave Otheon to return to Japan. However, he never lost contact with you, Rody Soul, the omega constantly stuck in his head. You didn’t initially have a phone of your own, so you communicated mostly through letters until you could afford one. Midoriya had initially been saving up to buy a flight over the summer, but unexpectedly a World Heroes Conference was scheduled to be held in the province over. So, Midoriya planned to slip away when they weren’t on duty to see you. Of course, he forgot to say anything to Bakugo and Todoroki, who were coming along as Endeavor’s other workstudy students. The last time they misplaced Deku in Otheon, he was framed and hunted for mass murder. So when he mysteriously disappears, they kinda freak out. And of course, you can’t have the world’s top pro heroes all gather in one place and not have someone target the event.
Alphas would usually start the matching process upon turning 22. However, Izuku was a low-priority case. In other words, he was generally calm and unproblematic. However, as he neared his 24th birthday, he couldn’t ignore the growing agitation—everyone he knew had already been matched, and it was starting to aggravate his alpha instincts. So it was time to be matched.
It started with small noises while you were sleeping, but you denied it in the morning and went to fulfill your tasks. Yanli was out with the omegas from other officials embroidering when she gets the news that you’re unwell and went back to your bed chambers. Upon receiving only cagey answers from Madam Jin, Yanli decided to check on you.
Light Yagami (Y/n) has told many lies in his life. But perhaps the biggest was the lie he told even himself: he’d erased all his memories of the Death Note, effectively killing Kira at least for now and proving even to himself that he’s innocent. That’s his biggest lie… right? In which canon remains the same up to this point, but Light (you) is an omega and goes into heat after losing his memories and being stuck in the cell.
Yoriichi is an alpha and a demon slayer, the strongest to ever live. He met you (Y/n) one day during a demon attack, helping out before he gets to know you. He falls in love with you over time, but chooses to stay silent about it to respect your friendship. You can be a demon slayer or a civilian if you want, plus whatever a/b/o gender you desire.