GVH-839 Big-assed girl with a huge ass spasms, squirting and massive incontinence, played to develop a vibrator-induced urination technique - Yui Tenma, a cocky track and field girl. - Sora Kamikawa

Yui, a beautiful, academically gifted, and athletically gifted high school girl on the track and field team, secretly engages in "sugar dating" to earn money for fun. One day, her secret is discovered by her student guidance teacher. With her weakness exposed, she is forced to wear a 'fixed vibrator,' a perverted teacher's fetish, in exchange for keeping quiet about it to the school and her family... The teacher, with his abnormal fetish, has also created a diuretic aphrodisiac and an extremely thick...