Tomoru Hende is a young man who has begun working at a mansion owned by the wealthy Tenma family as a servant. While working there he makes friends with the two daughters of the family, Cecile and Yuria. One night he’s visited by a succubus who declares she’ll take his soul but will grant him any wish as a last request; a succubus who bears an unmistakable resemblance to Cecile.

[From a review by Bookwormotaku]