Nanae, an athlete who placed third in the national high school championships. Her body is a perfect, athletic physique honed for competition, yet she's unable to unleash 100% of her strength. The reason lies in the intense hip joint massages she receives from her coach—bordering on sexual harassment—stemming from their close bond. Unable to endure the stimulation, Nanae involuntarily wets her pussy slit, experiencing both embarrassment and pleasure at the same time.