Under the influence of alcohol, Yuuto, a corporate underling, summoned the demon Morax and made a deal with him. Morax agreed to grant him a single wish in exchange for his soul. Yuuto used his wish to attain happiness, leading to a comfortable life where he could order around a demon to his liking. However, Morax is the type of demon that feeds on human bodily fluids and charisma, resulting in an unexpected turn of events where Yuuto ends up having sexual relations with him. What follows is a bizarre cohabitation with a demon...
