On the verge of turning 40, Chinatsu Mikami decided to appear in an adult video. At 39, she reveals she is a full-time housewife and mother of two children. Since her early thirties, her libido began to surge intensely. Unable to confide these feelings to her husband, who prefers innocent-looking women, she endured daily by resorting to masturbation. However, her suppressed desires continued to grow stronger each day, until she could no longer resist and finally took action. The turning point came when a friend she happened to meet during a trip to Tokyo invited her, and after much hesitation, she made the decision to participate.