Under the rule that women can urinate only when time is up in front of a hidden camera, this work captures the intense struggle of female participants holding in their urine. As the urge grows stronger, they endure desperately—pressing with their fingers, shifting their legs and hips, showing their agony in vivid detail. When the timer goes off, a new 16-minute countdown begins, but they remain unaware, and opening the box reveals their shock and confusion. Those who endure are measured for urine volume, with their bladder distension also recorded. In this installment, three girls end up wetting themselves. Minimalist girl Tsuyu holds back modestly, her stiffening expressions hinting at her limits before finally succumbing to the time extension trap. Natural girl Kana complains but reluctantly holds on, her face darkening further upon learning of the time extension. Nami clutches her crotch in agony, lifting her skirt to press directly on her urethra—a highly erotic sight—before being crushed by the trap. Juri's jeans become soaked, with traces of failure left on her buttocks. Though she starts to say "I didn't have an accident..." she ultimately can't finish with "it didn't happen." Mizuki exudes sensuality while showing clear signs of anxiety, left speechless upon opening the trap, enduring with a bitter smile. Finally, she exposes her plump lower body and releases a full 800cc of urine. (Haietaya) ※ Facial exposure in main video