Maki Takeuchi, a 32-year-old housewife, is currently devoted to raising her children. Unbelievably, she remained a virgin until two years ago. Graduating from an all-girls school and working in an environment dominated by older men left her with few opportunities to meet partners. At age 30, she finally had her first boyfriend and began to experience sexual pleasure—though that satisfaction was short-lived. Pregnancy led to marriage, and her life with her husband began. Yet, she still feels unfulfilled. With only one prior partner and fewer than 30 sexual encounters in total, she remains inexperienced. Shyness prevents her from making any sound in front of her husband, leaving her sexuality largely undeveloped. Witness with your own eyes as she accepts her second man in life. Her late-blooming yet intense desire and curiosity drive her toward infidelity, awakening a deep longing for new experiences. Follow her journey as she boldly steps into this new challenge.