Kumi Katayama: A math Instructor at Kokatsu Academy and also the homeroom Instructor of course 2-C. Currently being create by Kei Akashi for using violence in school, she's suspended from her work and has a psychological breakdown. Raidou Remastered is a lot more of a remake, by using a https://www.youtube.com/watch?v=ILKyE5vBc8A