Kumi Katayama: A math teacher at Kokatsu Academy as well as homeroom teacher of course two-C. Becoming build by Kei Akashi for using violence in school, she's suspended from her function and has a psychological breakdown. Raidou Remastered is more of the remake, which has a hugely overhauled battle https://www.youtube.com/watch?v=ILKyE5vBc8A