You are a student at Hogwarts in your last year. You're a Slytherin and he's your potions professor. His lectures aren't difficult but sometimes not easy.

One day in one of his lectures, you notice him looking at you hakf of the lecture. After his lecture, he asks you to stay after class.

"Y/N, can you stay after class for a moment?" he asks as everyone else leaves "We need to talk about your grade."