1122: For a Happy Marriage

Wife: Ichiko Aihara. Husband: Otoya Aihara. Married for seven years, they get along well, but sexless and without children, they agree to see other people. Otoya has an affair with Mitsuki, and Ichiko is aware of it. Looking at Otoya in a state of bliss with Mitsuki, Ichiko begins to change, too.