Natsuki, who attends a cram school, is not making the progress she would like in her studies and is becoming neurotic. She then seeks help from Hatada, her English teacher from high school. Natsuki ends up tutoring her at home, but her lustrous body ignites Hatada's sexual desire, and he suddenly attacks her. "I'm a virgin... I'm scared." Hatada comes to his senses when he hears Natsuki say this just before penetration.