Several years into her marriage, Kana has thrown herself into work to escape a cold home life where she and her husband can barely speak without fighting. Her coworker Kohei has always looked out for her, and one day he suddenly confesses his feelings. Kana knows she must reject him and that going further would be wrong, but returning home means another pointless argument with her husband. Unable to bear the loneliness any longer, she takes Kohei’s hand and follows him home, crossing the line into an affair that leads to creampie sex.