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

Making him jealous

After you wear the ring now as a necklace in school and at home on your finger Osomatsu's ego risen too much up. So whenever he wants to kiss you or touch he's does it but only when you two are alone of course. And this weak couch potato omega you are you can't overpower Osomatsu.

So you made a perfect plan with your omega friend Shin together. Osomatsu don't know that Shin is a omega as well, so good luck.

"Why are we waiting here (y/n)?" Shin ask confused. "Well, Oso is always passing by this spot here to get faster to the teacher office. So when we two want to eat in his office he don't lose toomuch time. Or whatever he tried to explain to me."

"Sooo ... we two talking like a love sick couple when he walks down the hallway?" Shin ask curious. You hum and nod your head. "You're so weird (y/n)~." Shin laughs dreamy. "Pssst! There he comes!"

Osomatsu sighs lightly. 'Why is (y/n)-chan holding such a distance to me? Doesn't she want to spend time with her fiance?' Osomatsu pouts, but smirks a bit when he remember you will come home anyways. Means he can have you for the rest of the day all to himself.

You walk over to Osomatsu, what he of course notice. But before he can even smirk more Shin runs from behind over to you. "(Y/n)~!" "Uah!" Shin hugs you from behind around your neck happy. Osomatsu stops walking and stares at you two.

You laugh softly and say: "Don't scare me like that Shin~." "But it's so cute when you get scared~." You blush while thinking of someone else and laugh a bit flustered. "Wah~! You're even blushing~!" Shin hugs you more and you two pass by Osomatsu.

But Shin stick his tongue out to Osomatsu before you two walking away. Osomatsu looks at you two with half closed eyes and doesn't really look happy right now. Even the other students getting scared right now.

~And then...~
You have PE class, but Osomatsu wasn't really feeling well. So now he sits by Ichimatsu in the nurse office. "Ichimacchan! What should I do?! (Y/n)-chan is getting to close with a boy from her club! He'll think she's single and take her away from me!" Osomatsu cries out.

Ichimatsu sighs slightly and hand him a cup with coffee. So Osomatsu stops whining around. "And why do you think I can help you?" Ichimatsu ask bored and drinks from his coffee.

"Because you're an omega too." Ichimatsu chokes on his coffee and glares at Osomatsu now. "So I thought maybe you know what's with her?" Ichimatsu sighs and wipes the coffee with a tissue away. "You know that (y/n)-chan is coming from time to time to me in her breaks, right?"

Osomatsu stares at Ichimatsu now with a blanked expression. Ichimatsu tries to hold back his laugh. "Whatever. She told me that your ego rised too much and that you ... let's say it like this. Since she has the ring you turned into a desperate dog in heat who only wants to fuck."

"Oi! Don't say such mean things to your Onii-chan!" Ichimatsu drinks something from his coffee again and said: "If you really want (y/n) just marking her isn't helping you. You want her to be yours? Mate with her. On medical view it's the only way for you to make sure she really loves you."

Osomatsu hums and think about what Ichimatsu said. 'Maybe he's not wrong? (Y/n)-chan loves me, right? So it wouldn't be a prob-' But the door from the nurse office gets slide open.

"Oso? Are you okay?"