Mitsuko Kajitani, a 44-year-old housewife from Chiba. Her 16-year marriage appears harmonious on the surface, but she struggles with a hidden frustration—her husband consistently reaches climax before she can orgasm, cutting their intimacy short every time. This ongoing dissatisfaction has gradually driven her to seek relief through masturbation. Yet deep down, Mitsuko longs to reach ecstasy with a real cock, a desire she's kept to herself—until today, when that wish will finally be fulfilled.