The older brother can't help but interrupt his sister's practice. For some reason, he's completely fixated on her. He feels the urge to tease her, provoking her sensitive spots and telling her to stop playing. His eyes are drawn to her nipples, faintly swaying as she performs. Indulging in the thrill of bothering her, he watches as her tight waist and massive breasts grow completely soaked. Pressing the water release button, saliva drips down, smeared over her nipples and rolled with his tongue, stimulating her intensely. What began as music practice gradually transforms into a secret, intimate moment. This work captures that forbidden desire.