There's this famous all-girls school, and one of the girls who goes there is Takigawa Hina. I've known her secret for half a year now. I can't tell anyone, and nobody knows but me. She doesn't even know that I know about it. But even I don't know all of her secrets…

Takigawa Hina goes to a locally famous all-girls school, and she's my girlfriend. We're both perverts, and our hearts are as one. ...at least that's what I think, but there's one thing she just won't show me. In front of my very eyes, for me and for me alone, I want her to pee! In order to take our relationship to the next level, I'm going to rise to the challenge!