The girls' toilet at school is banned!? Just when it seems that way, a female student can't hold her pee in any longer! After some hesitation, she holds it in until she's about to pee, but it's no use! She rushes into the boys' toilet, only to find that all the stalls are full! She can't hold it in any more! Her bladder is at its limit! "It's better than leaking!" she thinks, and takes the surprising step of urinating 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...