Kumi Katayama: A math Trainer at Kokatsu Academy plus the homeroom teacher of class two-C. Being create by Kei Akashi for applying violence at school, she is suspended from her get the job done and it has a psychological breakdown. Atsushi Takayama: Target from Yumi Shiina's Synergy stories. A https://www.youtube.com/watch?v=ILKyE5vBc8A