Takigawa Hina visits a locally famous all-girls school, and she's my girlfriend. We're both perverts, and our hearts are as one. ...no less than it is precisely what I believe, however, there is one thing she just won't show me. Facing my very eyes, to me and then for me alone, I'd like her to pee!!! In order to take our relationship to the next level, I will rise for the challenge...!!

There's this famous all-girls school, and among the girls who goes there's Takigawa Hina. I've known her secret for few months now. I can't tell anyone, and nobody knows but me. She doesn't have any idea which i know about it.