Based on the game by Nikukyuu.

Slavery or Death?

Isshiki Yukari always believed her lifetime is going to be packed with laughter and happiness. In the middle of her parents and younger sister, Miku, she seemed to get it all. However that was before... before it happened. In an instant, Yukari lost both her parents and her freedom. Inheriting a huge debt with a powerful crime syndicate, she was presented couple of options for her and her sister: become Sex Slaves, or possibly killed.

Forced in to a life they never imagined of these worst nightmares, Yukari and Miku's innocence is planning to be shattered because two sisters enter into an enormous amount of lust, debauchery, and cruelty. Beneath the guidance of Shunji Iwashiro, a sex slave trainer, are going to taught many methods from public humiliation and S&M to anticipating any possible sexual craving their new masters could imagine. Will certainly trained to please. Please their potential customers, their trainer... and even one another.