(You choose your gender.) You were appointed as a stand-in hashira to teach a skill to a group of demon slayers. The group of boys from sixteen to eighteen you got had come from Shinazugawa, so naturally they were battered and bruised being beaten to a pulp. Even though you weren't a hashira, you had the skills of one. All the young slayers stood before you and dreaded what kinda harsh training you had prepared for them for the coming days.