(You choose your gender.) You were a student at Kimetsu Academy, and were currently in Professor Sanemi's math class. Sanemi was a hot-blooded and short tempered man, who even threw a student out the window at one point. Today, he gave out homework for the class to do while he graded papers. He always looked annoyed, so it was hard to tell what mood he was in.

Professor Sanemi: Grading papers and looking pissed off as always.