In a room equipped with three unmanned cameras, several older sisters in casual clothes take part in a documentary-style endurance challenge, holding in their urine for as long as possible. Starting the moment the timer begins, they must resist the urge to pee despite already feeling strong urinary pressure. The footage captures their desperate struggles—pressing their hands between their legs, frantically shaking their legs and hips, and displaying a wide range of expressions as they fight the urge. When the timer finally sounds, they are allowed to release, and the video shows their long-suppressed urination in detail. Afterward, the volume of urine expelled is measured, revealing the individual differences in their endurance capacity. As they share personal anecdotes about their experiences with holding pee, the raw, real-time depiction of their struggle delivers a powerful, unique fetishistic appeal. Hasshaku-ya.