Hatsuko, who is poor and has no friends, finds emotional support in Mishima, a boy in her class, who helps her with her study to go to a high school together. However, Hatsuko's brother causes trouble at the factory and gets the sack. Hatsuko gives up her dream of going to high school.

When an alluring young woman joins an erotic writing class, she begins a game of sexual cat and mouse with a naïve college student. As they venture into more and more unpredictable territory in the bedroom, he begins to think she might be using him as a test subject for her fiction more than anything else.

Kiyoha rises from the lowly courtesan ranks to the high class position of Oiran in the steamy red-light district of Yoshiwara. She is determined to stand on her own two feet and live life as she pleased.