Kumi Katayama: A math teacher at Kokatsu Academy and also the homeroom Instructor of class 2-C. Currently being create by Kei Akashi for applying violence at college, she's suspended from her do the job and it has a psychological breakdown. Atsushi Takayama: Concentrate on from Yumi Shiina's Synergy stories. https://www.youtube.com/watch?v=ILKyE5vBc8A