The glamorous Kurata Mao appears in MAX-A's popular erotic novel series! Mao, a former gravure idol, married her husband, a former photographer, and lived as a full-time housewife. However, her brother-in-law is captivated by her sister-in-law, whose proportions have not changed since then. Mao is also unhappy with her sex life with her husband, and is frustrated every day. Meanwhile, Mao notices her brother-in-law's gaze and finally takes action. The brother-in-law falls into a trap set by his former gravure idol sister-in-law...