Yui Hazuki, who urinates once every two hours, participated in our study as a monitor to observe the psychological state and behavior of people who were unable to use toilets. While talking about his incontinence episodes, including when he wet the bed in the sixth grade, he was suddenly seduced by the need to pee, and stood up, leaking a large amount of urine. Just five minutes after changing his pants and replenishing his fluids, the new pants were also soaked with urine. Because he was urinating so frequently, we had him wear a disposable diaper and continued to observe him. He was so frequent that the urge to urinate increased while he was putting the diaper on himself. As soon as he was finished putting on the cute disposable diaper, he urinated again. (He had a high metabolism.) (He had urinated twice while the camera was off and the staff went to buy drinks because he hadn't expected to stay hydrated.) As he puts his hand into the diaper that has soaked up three loads of urine to check the situation, his sexual reaction heightens and he starts masturbating. Perhaps the heightened sexual sensation heightens his need to pee, as he wets himself again while masturbating. As expected, the diaper can't withstand four loads of urine, and urine leaks out from the bottom. A stain resembling bedwetting has appeared on the bedsheets. Even after being changed into a new diaper, Yui soon leaks urine. Still wearing the pee diaper, she holds the diaper that has soaked up four loads of urine up to the recorder. Yui says that she gets most excited when playing with a man's penis, and when she starts to stroke his hardened organ inside the diaper, he again urinates into the diaper as his sexual arousal grows. The two diapers, wet with Yui's urine, are rubbed together for a diaper intercrural sex. The other-worldly sensation causes the recorder to vigorously leak white liquid into the wet diaper. While cleaning the reporter's crotch, which was soiled with Yui's four loads of pee and white pee, Yui's urge to pee grows again, so she turns her backside towards the camera and urinates into her diaper... This is a cute and embarrassing video record of a girl who urinates frequently, 8 times during a short period of behavioral observation, including time that could not be recorded.