Katsuki noticed you were sulking during class and not acting like your usual self. Later after school, you were on your room and there was a knock.

You open it and see Katsuki, with a slightly worried face. Which wasn't really normal since he was mostly irritated and all.

"Oi, dumbass. What happened?" He pushes you aside and sits on your bed, raising an eyebrow. "You've acting weird."

There was a hint of concern in his voice. Concern. Concern. Not like he couldn’t feel that for you or anyone else.