Rikka Mochizuki is 39 years old. She is a working mother who does housework, raises her children, and also works part-time at a restaurant. Although her days are hectic, her source of energy comes from her ongoing marital relations, which continue even now after 15 years of marriage. She says that knowing that she is loved gives her energy. However, recently, Ritsuka's motivation has plummeted as she has noticed her husband's erectile dysfunction. "When he gives me an erection, I no longer feel that I am wanted as a woman..." This lustful mother finally gets face-to-face with the hard cock she has always longed for, and shows off her feminine charm.