Under the rule that they can only urinate when time runs out in front of a hidden camera, women are forced to endure extreme bladder pressure. Starting with intense urges, nearly at the breaking point, the tension is palpable from the beginning. Each woman displays unique ways of coping, showcasing individual personalities and reactions that captivate viewers. When the timer goes off, another timer is secretly added (+16 minutes), catching them off guard with shocked, surprised reactions as they realize the ordeal isn't over. As they continue struggling, they share personal stories about holding it in, writhing their legs and hips, desperately flailing to hold back. Relief sets in when time seems up—only for them to open a box and discover another timer, leaving them stunned and cursing as they brace themselves to endure once more. Those who manage to hold it undergo urine volume measurement, and bladder distension is also recorded. In this installment, three women end up accidentally wetting themselves. (Haiyetsuya) ※ Faces fully visible in main feature.