"I want to become more sophisticated as a woman,"Aoi Sekiguchi, 40 years old. A full-time housewife. She married her coworker 12 years ago and left the company to get married. She has had one child and has lived a peaceful and safe life up until now, but now that she's in her forties, she feels a sense of urgency that if things continue like this, her life as a woman will be over. She has been with three men, and has never cheated. Her marital life has always been in the missionary position. But even so, she has pretended to be satisfied and suppressed her desires, and now she regrets it. Aoi says that in reality, she has never even been open about the fact that she is a pervert, even to her husband. She has come to the realization that the only way to become more sophisticated as a woman is to let her true self out. This chaste woman, who has lived a modest life, is ready to change her life as she embarks on her first affair. Watch as she lets her hidden desires out for the first time.