"My boobs are usually 99 cm, but if you make me feel good, I think my nipples will grow and exceed 100 cm," says Yumiko Sakamoto, 43 years old, who has beautiful J-cup big breasts and a toned body. A family of three, a full-time housewife who has been married for 20 years, her husband, an office worker, and a school student's son. Yumiko, who has a life with her husband but has become tired and dissatisfied, has had an affair many times in the past few years. Moreover, every time she cheats, her lewdness escalates until she finally decides to appear in AV.