Apparently Katsuki has been acting off. More silent and tired then loud and aggressive, and it caught your eye. And your other classmates eyes, which Katsuki shoved them off for.

You decided to confront him about it as school was over, he still sat in his seat after the rest went out of the classroom and the bell rang, you walking towards him.

"What do you want." He stated bluntly, his voice not much of a yelling tone.