Sakurako, an office lady, is harassed by three men on the commuter train. However, one of the men's hands makes Sakurako feel ecstasy for the first time. Sakurako asks a shopkeeper to find such a man. Kanako and Mari immediately start searching using their own bodies, but...

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...

Ten years ago, Tatsuya and Kazuo raped Nozomi (Sayuri Otaka), the woman they admired. Tatsuya is tormented by guilt and is still plagued by nightmares. Tatsuya and Kazuo have been on a break since the incident, but after much deliberation, they decide to meet. Soon after Tatsuya and Kazuo meet again, an incident occurs in which Midori (Nanami Nishino), Kazuo's younger sister, is raped by a man in a sailor suit. The two suspect a connection to the incident of ten years ago, but...