Kanna is so sensitive that she orgasms quickly. When Kanna orgasms, they reach their limit and stop having sex. Her husband is not satisfied with their married life, and one day, he bumps into a man from his former part-time job and they go out drinking. However, Oda is excited by Kanna's defenseless, drunken sexuality and ends up violating her. Despite being violated, an indescribable feeling begins to grow in Kanna. Oda continues their relationship on another day. Kanna is getting bogged down. Takeo comes home from work and witnesses Oda and Kanna's relationship, but is too timid to say anything. Kanna's sexual desire with Oda gradually changes her. While she remains unable to tell him about her relationship with Oda, her husband is frustrated by Kanna's drastic changes, but he becomes addicted to her sexual acts.