My future omega wifu (Alpha!Osomatsu x Omega!Reader)

School days

The bell rings to tell the teachers and students they can take their break finally. Osomatsu walks down the hallway over to the teachers room. But on the way he sees how you walk in his direction. 'I bet (y/n)-chan will share her obento with me if I tell her I forget mine~.'

Osomatsu smiles happy. "(Y/n)? Do you have a second?" "Ah, yeah. What is it, Mr. Osomatsu?" You ask with a smile. Since no one in school, besides Osomatsu's brothers, knows about your engagement it's pissing Osomatsu a bit off that you don't call him by his nickname. But the most that an alpha in school thinks he can have you. Luckily all omegas hidding their second gender.

Osomatsu leans down to your ear and whispers: "I forget my obento~. Wanna go to the gym where the office from me is~?" Osomatsu gets quickly back to not make it weird. "Oh..." You hum and look around. When not a single student looks at you two you push the bento box into his hands.

"Eh?" "Now you don't have to starve, Oso." You whisper to him with a cute smile. You walk away while Osomatsu can't believe you really did this. Normally you would say yes and spend the whole break with him alone.

Osomatsu sighs depressed and starts to walk again.

~And then...~
The sextuplets sitting by Ichimatsu in the nurse office. Since Osomatsu wanted to talk with them it's safer. "And you're sad, because...?" Todomatsu ask confused. He didn't really get what Osomatsu tries to explain.

"(Y/n)-chan just gave me her obento!" Osomatsu cries out and eat the egg roll. "Must be horrible to get food from your fiancée." Ichimatsu said bored and drink his coffee. "That's not what I mean! (Y/n)-chan never refused to be alone with me!" "Maybe she just spend time with her friends?" Jyushimatsu said smiling.

"But I'm her fiance! She should spend time with me!" "But buraza, wouldn't it be suspicious if a high school girl spends more time with a teacher than her friends?" Karamatsu ask humming. "If the school would known about her second gender it wouldn't be." Osomatsu pouts.

A romantic relationship between teacher and students isn't allowed of course. But since everyone has a second gender and the teacher and the student are mates they only can yell at the teacher to not do it in school. Or else the student has to stay a few days home.

~Meanwhile~
After you gave Osomatsu your obento you stole at the same time his wallet. So you texted your friends that you will bring the snacks to the club room.

Now you four sitting together by the table and eating snacks instead of normal breakfast. "You really stole your finances wallet (y/n)? Wow. Not bad for an omega." The boy with the black hair said surprised. You just smile proudly and say: "I'm a pro when it comes to steal the wallet from Oso. He never notice it and if he does I only need to "cry" and he's butter in my fingers."

"Our vice president is really cool." The girl with light brown hair chuckles. "But our president is much cooler~." The other boy with the blond dyed hair said dreamy. "Agree~!" You two girls saying dreamy too.

Your three friends are with you the club "everything club". You have a small room with bookshelves full of manga, games, movies, normal books and magazines. A small tv with three different consoles and a DVD player. You often just hang around in your club, play a few games and eat together. The teacher who's responsibility for the club's didn't really cared if you're a real club or not. As long as you are four people and don't do shit he's fine.

The president from this club is Kajiyama Kuro. He's a guy who only smiles if he wants to, only lies if it's something important and is pretty clam. In other words he's a ideal alpha.

You are the vize president. All the club members know about you and Osomatsu since you told them about it. They hold this secret since first year of high school and the one that you are an omega.

The treasurer is the girl named Hasegawa Ayaka. She's a very nice girl, isn't ashamed to talk about hentai's and loves to tease you with your none sexual relationship with Osomatsu. Her second gender is beta.

And the club speaker is the boy with the blond hair, named Shirohara Shin. He's often smiling, doesn't care if anyone insults him for being himself and is a masochist. If any of you three yell at him or punch him he's in pure heaven. A typical omega who shows his lust side.