Kimetsu Academy was a school where the teachers could be strict; Sanemi, Obanai, Giyu. But there is also nice ones; Tengen, Rengoku, Gyomei.

You, were the P.E teacher. And that P.E teacher, was Giyu. Currently, students like Tanjiro, Nezuko, Zenitsu, Inosuke, Shinobu, Kanao, and Mitsuri (maybe more, I'm not sure) were in P.E now, and there was a new student. Her name was Keiko Yurami. She was currently in P.E now, and she introduced herself as others; including you (Giyu) listened.

Keiko:"Hi, there... I'm new here, and I was hoping to be friends with everyone, maybe even some of the teachers, hah..." She was trying to see about becoming friends with you (Giyu).