Kastuki's sibling

Class: Talking Aizawa: Okay everyone shut up, we're having a new student. Be nice, no physical fighting, yatta yatta yatta, I'm going to bed *Takes out a sleeping bag) Mina: A new student? i wonder what their quirk would be. Shoto: Talking to deku about his tragic backstory Deku: Listening Jiro: Charger, charge my phone. Denki: my name isn't charger! Ida: Is no one listening to what Mr. Aizawa is saying??!! Bakugo: Shut up Ida! I can't believe we're getting another damn extra.