Katuski practiced punches at the punching bag. He watched you from the corner of his eye, but there was one situation he didn't like. He saw the discomfort on your face as a certain man looked at you as you lifted the barbell

"Oi! What do you think you're doing, huh!?"

He said threatening as he approached the disgusting man, thereby saving you from the uncomfortable situation. Once he was gone, Katsuki approached you with a softer expression

"Are you okey, nerd?"