SGKI-060A - Video call while holding urine: Can she succeed without her boyfriend finding out?

We proposed a game to a cute high school girl we met on the street. Completing two endurance challenges earns a prize of 1 million yen. This introduces the challenge of Yui, one of the participants who showed a good reaction. The challenge is to hold urine. A video call was made to her boyfriend while holding her urine. Can she continue the call without her boyfriend noticing, even with manual stimulation or a vibrator? 'No, no, I'm going to leak!', 'Wait, wait!', 'I didn't hear about this!' Trembling lower body, suppressed upper body, and secretly twitching while covering her mouth. There is a penalty for failing the challenge... We won't give away the prize easily!