Despite becoming a physical education teacher, Yuka is actually poor at sports. She receives training from a senior teacher on how to jump over a vaulting box, desperately trying her best, drawing attention from everyone. The senior teacher, seemingly passionate about coaching, begins carefully checking Yuka's body. Soon, he continues the instruction while groping and squeezing her ass. Yuka pleads, "Stop it!"—but her voice sounds strangely sweet. Before long, her pussy becomes soaked, clearly showing her mix of tension and embarrassment.