[Madeverette] Lu's Bladder Torture (Ongoing) [Pixiv / Twitter]

A sweetly sadistic mistress keeps her collared tomboy kneeling at her feet, refilling him with water while a plug seals his aching, swollen bladder shut. When he finally whimpers that he needs to pee, she offers him a cruel game—ten minutes without a single drop escaping while she flicks and toys with his plugged, leaking tip. Sweat-soaked begging, tearful gasps, and her drool-slick cleavage looming overhead turn every second of denial into exquisite torment.