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