It lives in the neighbor, Sanjo Maki of super-lewd constitution of excessive sexual desire. And the younger sister Yuki Misono. Accidental Sakonji Seiichi, it became such two beautiful woman lewd sisters the lover relations.

A certain day Yuki wholehearted wants to be with Seiichi, it moves formally from parents family in the distance. After that, cohabitation absorbed in very erotic lewdness covered with the lust of three people began.