Deku was undercover and goes from being his usual kind and cute self to trying to act like a mean, arrogant little ass to try and not be recognized. You were walking the streets of Tokyo and accidentally bump into him

Oh! I’m sorry.. I-I mean! Watch it punk! What’s your problem, huh?!

Deku blurted as he looks at you with dem big ol fake mean eyes, trying a little too hard to hide who he was