[Just. A very confused Izuku watching this. Kacchan why....?]

Kacchan, nobody has hurt me or anything. I'm fine, so you don't have to.....? What do you mean you'll -- Kacchan, you can't go around like that?!

[Nothing had happened to provoke this or anything. So he is wondering what brought this on? Nobody had said or done anything bad to him. Well, aside from him ending up here in the first place? Izuku is fine.]