Gosei School has a long history. The principal of the school is highly ambitious and he tries to achieve his goals by using supernatural majin powers. Six students go up against the principal. The students are Taisei Manaka (Taisho Iwasaki), Ryuhei Domon (Ryuga Sato), Yusuke Takigawa (Yuto Nasu), Hyuma Oura (Hidaka Ukisho), Naoya Morimura (Naoki Fujii) and Ichika Sakurai (Issei Kanasashi).

A love story that takes place in the present day and in the past. Tamura Takuro is 27 years old and works as an art teacher at a high school. He is popular among the students. Yayoi is one of the students in his homeroom class. She spends her days without a goal in her life. Tamura Takuro recommends that she joins the art club. One day, Yayoi happens to see Tamura Takuro's sketchbook. The sketchbook contains countless sketches of a woman that Yayoi doesn't know. That woman is Yumiko. Yumiko was Tamura Takuro's Japanese language teacher and his homeroom teacher when he was a 17-year-old high school student. He loved his homeroom teacher.