With a lean, boyish physique and a subtly delicate expression, she effortlessly masquerades as a young girl. Yet deep inside, <Kohaku> harbors an uncontrollable, deeply masochistic perverted desire. Each time they meet secretly at a hotel near central Tokyo, she's dressed in a tight-fitting competitive swimsuit, and beneath that thin fabric, her nipples and penis stiffen with arousal. Surrendering to the middle-aged man's caresses, she acts coquettishly, craving more. When an electric anal plug is inserted and she's made to perform a devoted blowjob, she experiences erotic ecstasy through her anus even during the act. This captures the fleeting moment her mysterious allure captivates the older man's heart.