Miyu Inoue

Les Hanabishi et les Hidaka sont voisins. Les parents s'entendent à merveille, à tel point qu'on pourrait les considérer comme une seule et même famille. À vrai dire, c'est le fils unique des Hidaka, l'espiègle Kouki, qui s'avère jalousement convoité par les quatre sœurs Hanabishi. Pour elles, c'est leur petit frère. Les tuteurs des deux ménages étant partis en voyage d'affaires, les enfants ont carte blanche pour tourmenter l'homme de maison...

During the feudal era war develops on several kingdoms and territories, and Ryuuto leads one of the sides until one day his political enemies decide to set up a trap and send him to hunt a demon – which turns out to be a succubus known for killing several men already. The succubus falls in love with him – or at least with his lower part and energy – and decides to help him succeed in his military quest.

A mansion with a young owner, turns to be just the face of an occult practice on this world. Young ladies are trained to serve well the desires of the man who can pay for it. Brutality and torture are just normal things to this family. Also debts from womans can be paid with just a single word of acceptance to render their bodies to the most barbaric practices. But in the end the excess can have a high cost.