A clear-cut girl who excels at the piano makes her debut on a straight path! With the appearance of a young lady raised in the Yamanote area, her posture is impeccable as she plays the piano, seemingly innocent and free from any hint of naughtiness. However, her true nature is that of a very naughty piano girl. Yurika-chan, who is diligently practicing with her instructor for an upcoming recital, finds that unnecessary strength is causing her piano tone to be inconsistent. To help her relax, her instructor gently massages her, starting from her upper body and moving to her waist, hips, and crotch. As her fingers touch these areas, Yurika-chan doesn't just relax; she switches on as a woman. Her sunken nipples become erect, and her vagina is drenched with juices, making it slick. After giving a blowjob, she tries playing the piano with a vibrator inserted into her vagina, and the result is significantly better than before. Inspired, the instructor thinks that engaging in naughty activities might achieve ultimate relaxation, so he thrusts his erect penis inside her! This isn't sexual harassment; it's for the improvement of her piano skills! With the finger dexterity cultivated through piano playing, her hips move in sync with the rapid thrusting, and her face expresses intense pleasure, culminating in a loud climax. Her performance after being ejaculated inside is so outstanding that it's undoubtedly the winning piece at the recital.
