Kumi Katayama: A math Instructor at Kokatsu Academy and the homeroom teacher of course two-C. Becoming build by Kei Akashi for using violence in school, she's suspended from her work and has a mental breakdown. Atsushi Takayama: Concentrate on from Yumi Shiina's Synergy stories. A person who once retained https://www.youtube.com/watch?v=ILKyE5vBc8A