Sweet, Loving Sex Between A Fem-slut Demon and His Master, in Full-Color!
Itsuka is a demon, and Saohiro is a human of the Nikubou family, a family that carries the blood of exorcists.

A pact made between them stipulates that the two would have a master-servant relationship. Itsuka, who thought fondly of the kind-hearted Saohiro for a long time, was looking forward to the day he would finally become his servant.

Time has passed, and Itsuka reunites with Saohiro.
With a somber expression, Saohiro tells Itsuka something he isn't expecting...