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Yui, a track team schoolgirl with stunning looks, excellent grades, and outstanding athletic ability, was secretly engaging in sugar dating to get spending money. One day, the student guidance teacher discovered the truth. With her weakness exposed, she agreed to wear a 'fixed vibrator'—the perverted teacher's favorite hobby—on the condition that he keep it a secret from her school and family... Under the influence of a diuretic aphrodisiac created by the teacher and the pleasure of a thick vibrator, she was developed to the point where she couldn't stop leaking. #CockP
