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