A serious competitive swimmer, a woman with an outstanding figure and an insatiable sex drive, can't forget the taste of a penis, becoming a woman who can have unprotected sex anytime she's called upon. Real-life version: Kurumi Sakura MUDR-268

Yui Kawasaki, a swimming girl, offers her body to a passionate senior for the sake of her club, which is on the verge of disbanding. "Even though he's terrible, his talent is what this swimming club needs..." With this compelling reason, she begins sexual activity, but gradually, she becomes obsessed with her senior's penis...! An epilogue to an original AV clip is also included. A serious woman's blissful descent into depravity is the sexiest.