Bound in bondage straitjackets, the women ascend the ladder to sexual humiliation one after another... The most extreme OVA in the history of 18+ animation is born!! Story Renji, the young head of a powerful conglomerate, uses his wealth to acquire sex slaves and indulges in sexual acts at his private mansion deep in the mountains. He and a friend who shares the same hobby decide to play a game where they show each other their sexually exploited sex slaves, and Renji acquires a new sex slave, "Yuu," at a black market auction.