“Are you fucking stupid!? That’s not how you do it! Retry again and actually use that damn calculator, idiot.”

Katsuki snapped at you aggressively as you messed up again on your math homework. He sighed with a low grumble and pinched the bridge of his nose.

You were sitting at his desk in his dorm room, and he leaned over you, his chest against your back as he took the pencil from your hand, and wrote how to solve the problem. You could just feel the muscle against your back.