The story takes place in a fantasy world where a powerful and wealthy noble, Jinpaku, holds significant influence over the kingdom. Sophia, a kind-hearted and beautiful noble lady, becomes entangled in Jinpaku's web of desires and erotic games. As the series progresses, Sophia finds herself becoming increasingly obsessed with Jinpaku, leading to a downward spiral of morally ambiguous choices.
: Set in the land of Eostia, it follows the betrayal of the "Black Dog" mercenaries (Kuroinu) who turn against their human employers to establish a "Sex Empire".
