Sachiko Hayashibara is 47 years old and a full-time housewife who has been married for 23 years. Sachiko says that she never really liked sex. Even after getting married, there was always a gap between her and her husband's libido, and they had never had sex more than once a month. But it was only a year ago that she discovered the pleasure of sex! One day, she tried using a secret medicine that her husband had bought from a dodgy mail order company, and was hit with a wave of pleasure she had never felt before... For the first time, Sachiko understood what it meant to "come" and that there is such a thing as compatibility in sex.