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

Jealousy?

A new teacher, who will stay in school for two months, is flirting with Osomatsu since a whole week now. He of course isn't interested in her (not just that she's a beta), but this woman isn't noticing it.

The bell rings to tell the teachers and students they have finally a break. "We'll talk about the answers tomorrow!" Osomatsu said to his students. "Haaai~!"

You walk over to the desk from Osomatsu since he wrote down on the copy he gave you to see him after class. "Is something, Mr. Osomatsu?" You ask confused. Osomatsu comes a bit near so the other students can't hear him. "I need to ask you something so ... wanna come to my office?"

Before you can answer the woman walks inside the classroom. "Mr. Osomatsu~! I need to talk about the next lesson with you. It has to do with the students." The whole school notice that she has interest in Osomatsu, but the principle is ignoring it as long nothing bad happens.

"But Mr. Choromatsu has the next lesson you need for Ms. Nigawa." Osomatsu said a bit bored, but she just push Osomatsu softy forward to the door. "But I need your help, Mr. Osomatsu."

Osomatsu looks unwell a bit over his shoulder. His eyes widen when he can see the sad look in your (e/c) eyes. You look like these since a whole week. Since this woman stared to talk with Osomatsu.

Ayaka walks over to you and hold a thumb up to Osomatsu. Taking a bit worry from his shoulders. Because you told Osomatsu that your friends know about you and him. Still, Osomatsu is worried about you.

~And then...~
Three hours later, but Osomatsu didn't saw you anymore. Even his brothers told him that they didn't saw you in class. Osomatsu, the protective alpha he is, looks now desperately for you in the whole school building.

'(Y/n)-chan where are you?! I swear if I find out someone kidnapped you I'll kill this bastard!' "?!" "Kyah!" Osomatsu bumped into someone when he walked around a corner. Osomatsu stumbles back while the person fell down to the ground. "Ah... I'm sorry."

"Oh! It's okay Mr. Osomatsu~!" Ms. Nigawa stands up from the ground and Osomatsu starts to walk again quickly. "?!" But his one arm gets grabbed from behind. Causing Osomatsu to stop. "Why do you want to run away so soon~? Do you have a free lesson after lunch Mr. Osomatsu~? We both can maybe go to your private office~?"

'My office...!' Osomatsu rips his arm away and runs quickly away. Ms. Nigawa sighs sadly and walks back to the teacher office.

...

"(Y/n)-chan?!" Osomatsu quickly rips the door from his office open. You lay on the couch and sleep soundless. Osomatsu sighs in relieve that he found you. He shuts the door, lock it and walks over to you.

You whine a little and small tears collecting in the corner of your eyes. "Oso..." Osomatsu's eyes widen when he sees that you're about to cry. Osomatsu lift your head gently up and sit down in the couch. He lays your head down on his lap and starts to stroke your hair softly.

" ... Why do you sleep here (y/n)-chan? Did you waited since breakfast here?" But Osomatsu only hears from you soft breathes. " ... Hehe, you're really ... cute."