Rias Mizu Tani, a married woman with a voluptuous figure, spent much of her life abroad. Although she grew up in Japan until her student years, she later attended school overseas and settled into life there. As an adult, she married a Japanese man she met abroad. Last year, she returned to Japan due to her husband's work, finding daily life back in Japan refreshing and enjoyable. However, she noticed a lack of social connections and fewer opportunities for sex. She observed that Japanese men tend to be reserved and avoid pursuing married women, making her sex life less liberated compared to her more open experiences overseas. Seeking intimacy, she joined an affair website and met a male AV actor. Through this encounter, she became curious about performing in adult videos and decided to explore new experiences.