Rin is 32 years old and has been married for eight years, with no children. After graduating from university, she got a job at a bedding manufacturer, where she met her future husband—a representative from a medical equipment company. He is three years her senior. Their relationship developed through work, and they married a year later. Though their marriage is harmonious, her husband is emotionally distant when it comes to sex, and they haven't had intercourse in about three years. When a man once told her, "You're a masochist, right?" memories of being teased and teased during her student days resurfaced. Wanting to confront her true nature, Rin decided to appear in an adult video. Her long-dormant masochistic side awakened, overwhelmed by the intense stimulation and unprecedented pleasure, driving her to multiple powerful orgasms.