Sosha has Nikko tied up, wearing nothing but a diaper, and refuses to let her go until she wets herself.
In this video Sosha wants to make Nikko pee in her diaper. So, she ties Nikko up, only wearing a think adult diaper, and refuses to let her go until she pees. Nikko badly wants to go, and is willing to pee in her diaper for Sosha, but doesn’t have to pee immediately.
Sosha leaves Nikko tied up, coming back to check on her until finally she pees. After Nikko has peed, Sosha helps her out of the soaked diaper and lets her go.