Chisato Takagi, who married her office lover and left the company, lived a peaceful life with her husband. However, unlike Chisato who desired pregnancy, her husband showed little interest and their sex life grew cold. One day, he brought his junior colleague, Sasaki—Chisato’s former junior—at home. As the three reminisced over drinks, the husband passed out from alcohol. Seizing the moment, Sasaki suddenly embraced Chisato and forced herself on her. Though initially resisting, Chisato succumbed to Sasaki’s allure. Gradually, forgetting her husband’s presence, overwhelming passion and desire took control of Chisato’s heart…