Kumi Katayama: A math Trainer at Kokatsu Academy and also the homeroom Instructor of course 2-C. Becoming build by Kei Akashi for utilizing violence in school, she's suspended from her work and has a psychological breakdown. The wiki needs your assist with constructive edits and content material pertinent to https://www.youtube.com/watch?v=ILKyE5vBc8A