Andachi Atsushi (played by Kawanami Kosuke) is a high school senior who excels in his studies and has a handsome appearance, but due to his introverted personality, he has few friends. Atsushi harbors a secret love for his homeroom teacher, Horita Noriko (played by Ohtake Kazuhisa). Overwhelmed by his feelings, he often makes anonymous calls to express his love to her. However, Noriko finds this harassment intolerable, as she is already deeply in love with the school's physical education teacher, Morimoto (played by Okita Hiroyuki). After witnessing Noriko and Morimoto on a date and in intimate moments, Atsushi feels immense pain. On the other hand, his classmate Yasaki Yumi (played by Sawaki Mami), who secretly has a crush on him, bets with her friends to seduce Morimoto. This action creates a rift in Morimoto and Noriko's relationship, allowing Atsushi to step into the heart of his beloved teacher. Thus begins a tragic and taboo romance filled with sorrow...
