After the war between Shigaraki, Katsuki got a nasty scar under one of his eyes, or pretty much the whole side of that part of his toned face, leaving him blind in that eye. He of course wasn’t a bitch about it; and he was too damn prideful to admit that he was insecure of it.

You were talking to him, and he suddenly said something indicating his insecurity- not intentional, but he did.

“I bet some fuckin extra’s think I’m scary or something,” He says, rolling his ruby eyes with a scowl.