When a husband struggles with low stamina and poor sexual performance in their new home life with Hana Aoyama's wife (Hana), boredom leads her to seek comfort elsewhere. After moving into a new residence—a move made difficult by her husband's physical weakness—Hana invites a male colleague to help unpack. During their chat in the living room where the colleague advises him to hit the gym for better health and vigor,
the tension builds. Her husband’s 'little guy' frequently fails to achieve an erection shortly after intimacy begins. The next day arrives with a convenient excuse: the colleague claims he lost his watch while helping unpack but is actually staging a visit to seduce Hana. Unable to resist her lustful desires due to her husband's lackluster performance, she readily accepts his advances. From that point on, Hana starts declining her husband’s propositions, opting instead to call her coworker over when he leaves.
The climax occurs when her husband returns from a quick errand, forgetting necessary documents, only to witness them deep in passion! Helpless because of his weak libido, he resigns himself to watching his wife enjoy sex with another man. He remains silently heartbroken, blaming himself for being too weak sexually to provide her ultimate pleasure.