[Making up for that is part of it. But it's more than just that, Izuku did just want to make a pledge to be by Katsuki's side. Protect him, be there for him. Be on even grounds with him. He knows it sounds silly. Of course, he wants to protect everyone.
no subject
But also being his knight sounds so cool...]
It's not just that...!
[He drops his shoulders.]
Alright, then forget it. I... Maybe it is stupid.