Sawa's mother-in-law suspects her of being unfaithful. While Sawa unexpectedly runs into Kitano, Rikako secretly visits Kato at his art studio.

A frustrated Sawa confides in Rikako, expressing relief that Kitano rejected her before their relationship escalated into a full-blown affair. She also states her intention to avoid seeing him again.

Rikako offends Kato by proposing a transactional relationship. Meanwhile, Sawa becomes increasingly concerned for Rikako after discovering her online dating profile.

Sawa and Kitano share an intimate moment in a hotel room. Later, upon receiving a call from Takigawa, Sawa realizes that Rikako is in danger and rushes to her aid.

Sawa finds out that Yuichi's wife is actually Noriko. Meanwhile, Rikako's husband confronts her about her affairs.