Based on the erotic doujin game by Nine's Graphics.

Welcome To The Courtesans Palace Of Mystics. You can have a variety of nonhuman prostitutes here. Tonight, please have fun with amorousness of bewitching, beautiful, pretty and very sexy prostitutes.

Twin succubi "Mari" and "Yuri" that can share pleasure, a butterfly courtesan that was assigned to his family when he was a child and a nine-tailed fox girl... all there to service his every desire.

What more could a guy ask for?

(Source: DLsite English)