Shimatani Airi lost a tennis match and was required to receive special instruction from her coach. This instruction turned out to be gripping the teacher's penis as if it were a racket handle. Initially hesitant and flustered, Airi gradually finds the training taking an increasingly erotic turn. She is taught adult skills like how to handle a penis and perform blowjobs, then made to change into a gym uniform as the lesson escalates into full-on sex training. Unable to endure the pleasure, she moans passionately in front of everyone, visibly overwhelmed by both ecstasy and genuine delight.