Mio and her husband have been married for two years. Mio was unsatisfied with her gentle and sincere but somewhat unmanly husband. At that time, she is a colleague of her husband's company who often comes to visit Mio's house. Colleagues love Mio and press her relationship to Mio while her husband is away. Mio resists at first, but she is attracted to the masculinity that her colleague's husband does not have.
