Ono Yasuomi is a math teacher at a private institute. He doesn’t have a girlfriend and he is engrossed in math. Ono Yasuomi doesn’t complain about his life, but he feels unease about being single for the rest of his life. His dates with women do not go smoothly. Ono Yasuomi doesn’t now what to do to fix that. His student Akimoto Kasumi tells him that he is not normal. Ono Yasuomi asks Akimoto Kasumi to teach him to become normal.