Keiko Hattori, 53, from Ibaraki Prefecture. Married for 28 years to a company employee working at a pharmaceutical firm, she is the mother of two sons and one daughter. Her family life has been quietly happy, but as her children moved out and the house grew still, she began to feel a sense of boredom. Her only excitement became masturbating during her husband's absences. Seeking a change in her routine, she made the decision to have her first affair in life. Watch this virtuous housewife in her fifties experience her first-ever sexual awakening, captured in a before-and-after documentary style.