The girls' restroom at school is banned!? Just when it seems like that, a female student can't hold her pee anymore! After some hesitation, she holds it in until she's about to pee, but it's no use! She rushes into the boys' restroom, only to find that all the stalls are full! She can't hold it in any longer! Her bladder is at its limit! "It's better than wetting myself!" she thinks, and takes a surprising action... peeing into the urinal! The boy gets an erection when he sees a girl peeing standing up, which is unexpected! Then, the girl sees her crotch...