Takumi Kizu

Tetsu Himokura is a parasitologist. He enjoys researching the lives of parasites at his home laboratory and he barely leaves his home. He also has assistant Haruma Takaie to help him. Tetsu Himokura's right hand is a robotic prosthetic hand. He is very smart, but blunt to others.

Toki-Kun is a yankee who gets into fights. But despite his appearance he is actually a gentle guy. He gains favor with Mr. Sahara, who is not only a physical education teacher but his homeroom teacher. The loud gong of a straight-gay unrequited love echoes out!!