Diary of a Female Teacher: Forbidden Sex

Mitsuru Adachi (played by Kosuke Kawana) is a senior student in high school. He is excellent in studies and has a handsome appearance, but he has few friends due to his introverted personality. There is an unknown secret hidden in Mitsuru's heart. He is deeply in love with his senior teacher Hota Noriko (played by Otake Kazushige). This feeling was so overwhelming that he often made anonymous phone calls to express his love to his teacher. However, Noriko is very annoyed by such harassment. In addition, she has already fallen in love with Morimoto (played by Hiroyuki Okita), a physical education teacher at the same school, and they are deeply in love. Witnessing the scene of Noriko and Morimoto dating and falling in love, Mitsuru felt extremely painful. On the other hand, Yazaki Yumi (Asami Sawaki), a classmate who has a crush on Mitsuru, makes a bet with her friends and designs to seduce Morimoto. This move caused a rift in the relationship between Morimoto and Noriko, and Mitsuru used this to get into the heart of his dream lover. A forbidden love full of sadness begins...