Kumi Katayama: A math teacher at Kokatsu Academy plus the homeroom Instructor of course 2-C. Staying setup by Kei Akashi for working with violence at school, she's suspended from her function and has a psychological breakdown. Atsushi Takayama: Goal from Yumi Shiina's Synergy tales. A person who once held https://www.youtube.com/watch?v=ILKyE5vBc8A