Aizawa was your teacher at primary school, and then he went to UA, just like you. But he didn't know that, when you entered UA, you got bullied.

Today he was going through the UA corridor and saw you and two other boys bullying you...

Boy1: I'm surprised that you even, got to UA with your quirk!

Boy2: You have such a useless quirk...

Aizawa saw this and started walking towards you three