In "Youma Shoukan e Youkoso!," a mysterious traveler stumbles upon a brothel that exists outside of normal space and time. This is no ordinary establishment; it is a nexus point where all dimensions meet, staffed by a rotating cast of supernatural beings known as Youma. Each courtesan possesses unique abilities and comes from a different realm, offering experiences no human could. From twins who can share sensations to a fox spirit said to absorb misfortune, every visit promises a new and unforgettable encounter. The series follows the anonymous protagonist as he is guided through the brothel, sampling the pleasures offered by its diverse inhabitants. Each episode is a self-contained story focusing on a different demon girl, exploring themes of fantasy, desire, and supernatural intimacy as the protagonist learns that within these walls, every wish can be granted.

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