i want an omegaverse assasin au where omega izuku has to conceal...
han 🐇@yordeku
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Sep 04, 2026
~4 min read
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1
i want an omegaverse assasin au where omega izuku has to conceal his secondary gender as he works for an important mission with the top assassin of their agency, bakugou katsuki (an alpha, specifically: izuku’s fated mate)
2
his secondary gender wasn’t revealed to katsuki but he’s sure fated mates can feel each other’s presence, right? because as soon as izuku laid his eyes on katsuki, he already knows that katsuki is his alpha. but why’s katsuki acting cold towards him?
3
izuku is heartbroken, but he cant give in to his pain. even if katsuki only talks or acknowledges him when they need to discuss something about the mission.
izuku yearns, sighing with relief when katsuki has to act like they are mates infront of the public eye. for the mission.
izuku yearns, sighing with relief when katsuki has to act like they are mates infront of the public eye. for the mission.
4
izuku clings to these hopeful moments, no matter how fake they are. because he must complete this mission no matter what happens — but imagine if his suppressants start to fail him in the middle of the mission, izuku going into an unplanned heat with his fated alpha in the room.
5
that night, katsuki doesnt touch izuku. he goes out quickly with a clenched fist and a hand covering his nose. leaving izuku to relieve his heat alone with only katsuki’s coat covering his body, all alone in the room that is covered by the (his) alpha’s scent.
6
next morning, izuku apologizes and katsuki doesn’t say a thing. they never acknowledge it ever again throughout the entire mission. but katsuki seemed to pay more attention to izuku now: holding his waist even if no one’s around, making sure that izuku eats and sleeps on time.
7
neither of them knows when it started but somewhere along the mission, dynamight-san becomes kacchan and deku becomes izuku.
8
the mission ends, after months of tension and growing relationship between katsuki and izuku.
izuku should be happy, knowing how successful his first big mission went and he got to work with one of the most amazing agents that they have, too. his kacchan.
izuku should be happy, knowing how successful his first big mission went and he got to work with one of the most amazing agents that they have, too. his kacchan.
9
but izuku cant help but to cry, his eyes welling up with tears as he says goodbye to katsuki. knowing that this is goodbye for the both of them, because izuku is convinced that katsuki has so much more to do. he has so many things to focus on — much more important that izuku.
10
izuku hiccups, flushing with embarassment as he cries infront of katsuki. but he puts on a brave face with a smile that is genuine despite of the tears falling freely on his cheeks. he wishes katsuki all the luck, to not forget him at the very least.
11
katsuki waits for izuku to finish, clicking his tongue as the omega tries to walk away from him.
katsuki frowns deeply. rude, izuku wont even let his alpha reply? he’ll just walk away like that?
katsuki frowns deeply. rude, izuku wont even let his alpha reply? he’ll just walk away like that?
12
katsuki grabs ahold of the omega’s wrist, letting out a sigh of relief from the small contact that he gets from the omega. izuku turns around, his emerald eyes sparkling with more tears threatening to come out of it.
blinking, izuku asks softly. “what is it, kacchan?”
blinking, izuku asks softly. “what is it, kacchan?”
13
katsuki feels himself fall harder.
then he grips izuku’s hand a little tighter, crouching a little bit as he raises izuku’s hands infront of his face. he leaves a tiny kiss on izuku’s knuckles, closing his eyes as he revels from the gasp that comes out of the omega’s lips.
then he grips izuku’s hand a little tighter, crouching a little bit as he raises izuku’s hands infront of his face. he leaves a tiny kiss on izuku’s knuckles, closing his eyes as he revels from the gasp that comes out of the omega’s lips.
14
“what, nerd? you’ll just leave me like that? didn’t know you’re a heartbreaker, izuku.”
izuku stutters through his words, confused and didn’t know what to do. he wants to ask katsuki what he meant, but all that comes out of his mouth is a string of incoherent words and nonsense.
izuku stutters through his words, confused and didn’t know what to do. he wants to ask katsuki what he meant, but all that comes out of his mouth is a string of incoherent words and nonsense.
15
izuku covers his mouth in embarassment, realizing that he was just sputtering nonsense for too long. he flushes under the alpha’s patient stare. looking away, not used to the attention that he’s receiving from katsuki right now.
16
katsuki breaks the silence and apologizes, saying that he didn’t want to start courting izuku in the middle of a goddamned mission. what kind of alpha is he, wooing an omega in an unsafe place? he still feels like absolute shit leaving izuku fend for himself during his heat.
17
“so, kacchan likes me back after all?” izuku asks quietly.
katsuki nods, a pang of regret shoots through his heart at izuku’s hesitance.
“i like you, izuku.” katsuki says with a hint of desperation coating his voice. “let me make up to you. let me court you properly.”
katsuki nods, a pang of regret shoots through his heart at izuku’s hesitance.
“i like you, izuku.” katsuki says with a hint of desperation coating his voice. “let me make up to you. let me court you properly.”
18
izuku stares at him for a few moments like he can’t believe what he was hearing. then he cries, throwing himself into katsuki’s arms. he buries his face on the alpha’s neck and drowns himself in the scent of his fated mate.
19
“was that a yes?” katsuki chuckles, hugging izuku closer to him.
izuku smiles brightly, answering him with a kiss on katsuki’s lips. izuku’s arms are wrapped around the alpha’s shoulder as katsuki’s kisses him back.
and their love story starts from here.
izuku smiles brightly, answering him with a kiss on katsuki’s lips. izuku’s arms are wrapped around the alpha’s shoulder as katsuki’s kisses him back.
and their love story starts from here.
20
im ngl idk where i was going with this exactly and i should’ve stopped at the first tweet tbh ;_____; and then i started yapping again omfg THANK YOU FOR READING THO if u reached up to this part :>
21
i know they should've talked but i love angst so 😽😽😽