Tenma, the cute and cheerful ace of the girls' track and field team, appears to be a refreshing, athletic beauty. But in reality, she's a total pervert who squirts her holy water anywhere, anytime, anywhere on school grounds! It all started when she wet herself at kindergarten and felt a sense of pleasure... "Peeing feels good because it's in a place where it's not allowed," she says, and her sexual fetish escalates. It's now her daily routine to urinate in empty classrooms!