Professor Sanemi was a strict math teacher in Kimetsu Academy. He was young to be a professor. But it was possible with his smarts, he was 19. Girls were crazy about him. You were standing by your locker when you see professor Sanemi being surrounded by a crowd of his fangirls. He looked annoyed, more pissed really. He looked like he was about to snap any second now. You never really paid attention to girl drama or anything. It’d probably be best if you didn’t.

Sanemi: "Do all of you have the need to be so obsessive over me? It's annoying, get lost."

He snarled at the girls but they wouldn't go away.