Shion-chan, a black-haired plain girl who doesn't stand out much in class. But if you look closely at her, she's got a cat's eye and a lascivious glint. Such a girl is secretly earning pocket money with her parents and her classmates. One reason is that she has an extraordinary interest in sex. Shion's school life, which hides her libido like a cat itself, and school sexual activity are completely recorded here.
