42-year-old Mio Yamamoto is the featured performer. Neglected by her husband and using masturbation to cope with daily loneliness, she decided to participate in this shoot longing for human warmth. She demonstrates her usual routine of vibrator and electric massager masturbation, becoming so immersed that she loses awareness of the camera and reaches the brink of fainting. Finally experiencing sex with a professional, she remains highly enthusiastic throughout, climaxing repeatedly with every thrust, delivering an intensely memorable performance.