A documentary-style production featuring sisters in casual clothing enduring intense urges to pee, captured by four unmanned cameras. From the very start, the girls already feel a strong need to urinate, and they are forced to hold it until a timer goes off. During this time, their restless, anxious expressions and desperate struggle to resist are vividly recorded. As they share personal stories about urination, they press their hands against their crotches, twist their waists, and squirm their legs—visibly demonstrating the agony of holding it in. When the timer finally sounds, they begin to relieve themselves with great relief. Afterward, the volume of urine expelled is measured and displayed on screen, along with the swelling of their lower abdomens (excluding certain areas). A new twist is introduced: participants must open a box after the timer ends to receive the next instruction. The pissing scenes are edited from two angles for enhanced viewing. In this session, two participants accidentally leaked before the timer. Born from email exchanges with fan A, this documentary captures uniquely expressive bladder endurance performances, delivering a powerful fetish experience.