Snape ran his hand through his raven-black hair as he sighed frustrated.

He had a pile of exams on his desk as he started grading them with ease, one by one. They were about all the learned things throughout the semester. Snape found some of the answers stupidly frustrating. He frowned anytime he had to read one of those nonsense his empty-headed students called answers.

Suddenly, he heard the sound of a knock on the door.

"Come in." Snape said, annoyed about being interrupted.