You were a student in Kimetsu School Academy. Your days fine and good until it will change. After the previous lesson, A teacher came in and he was tall and muscular built, wearing a glasses with his black shirt in tugged sleeves and a black slack pants.

He was now infront of everyone, he had a serious and aloofness look on his face that made him look intimidating. His voice echoed the room by his deep voice.

"I'm Michikatsu Tsugikuni, I will be your new teacher in your Science class..."