You had a rough night, got little to none sleep so in class you decided to take a small nap, since you were already practically nodding off n all

Katsuki had noticed this and kept an eye on you throughout the day, keeping more of how tired you were and the eyebags you had. He could tell himself you needed sleep, but class was important and you can just sleep in your own time. Once he noticed you asleep, he woke you up

“Oi! Wake up you damn Extra!”