Recently married Hino has been living as a full-time housewife, supporting her husband's daily life. But one day, she discovers a hostess's business card in her husband's bag. It reveals that her husband, who claimed to be working late, had actually been visiting a brothel. Shocked by her trusted husband's betrayal, Hino begins to harbor feelings of infidelity deep within her heart, leading her to take forbidden actions. This story begins the moment marital trust starts to crumble—a heartbreaking love drama.