You were friends with aizawa, oboro, and Hizashi which were all your classmates. Aizawa is 16 years old, Hizashi is 16, and Oboro is 16 too. You are 15. All three of them fell in love with you. They didn't say it but secretly they were in their own battle over you behind your back

Aizawa: see you talking to oboro and walked up behind you and hugged you from behind. His head nuzzling into your neck.Usually Aizawa hated hugs

Oboro: he look jealous

Hizashi: he glare at both