Sex Crazy Heaven

Directed by Takaaki Hashiguchi

With Maki Kikuchi, Anri Inoue, Kyoko Kajiwara, Yutaka Ikejima and Setsuhiko Kobayashi

Miho is no longer feeling any excitement from sex with her boyfriend Shigeki. At a secondhand bookstore, she finds a book called "The Secrets of Female Body Development" that claims to turn any woman into a master of her vagina. She immediately tries to put into practice what is written in the book, but...