Seiichi works at his father's company, preparing to take over the business in the future. He harbors deep resentment toward his father, who constantly parades different women around. One day, Seiichi discovers a note in his father's planner detailing an appointment with a woman—and decides to go to the location himself. There, he encounters Akari, a woman who works at the same company. In an atmosphere completely different from the workplace, Seiichi attempts to convince Akari to end her relationship with his father, but instead finds himself receiving a lesson from her about the complicated nature of men and women. This encounter becomes the catalyst for a profound transformation in Seiichi's life.