Kumi Katayama: A math Trainer at Kokatsu Academy and also the homeroom Instructor of course 2-C. Staying set up by Kei Akashi for employing violence at college, she's suspended from her perform and it has a psychological breakdown. The wiki demands your help with constructive edits and material pertinent https://www.youtube.com/watch?v=ILKyE5vBc8A