Akari is 33 years old, a full-time housewife, and the mother of two children, having been married for eight years. In her youth, she was a manager of the baseball team and was absorbed in working hard with the players aiming for Koshien, but to the players, she must have been like a heroine in a romantic comedy manga. Recently, she has started to reminisce about the past, after she realized that her relationship with her husband had changed from lovers to husband and wife, and then to father and mother. When he said to her with a laugh, "You're totally a mother," the word "cheating" flashed in her mind.