While Hinako's husband Yuusaku is on a business trip, the new neighbor Imai moves in and visits to greet her. He helps Hinako with her shopping and proposes they drink wine together. Hinako declines, but he insistently invites himself over, leaving them alone at her house. Imai takes advantage of Hinako's loneliness, caressing her while she is on the phone with her husband, and they have sex. Hinako regrets her betrayal while in the shower but is once again drawn in by Imai's smooth temptation. Later, when Imai visits again, they start with a passionate kiss and move to the bedroom. Unable to ignore the call from her husband, Hinako answers the phone during the act. She tries to suppress her moans while talking but finds herself drowning in guilt and pleasure.
