A young man has a vivid dream in which he encounters a beautiful woman wearing a choker engraved with the name Purimu. She calls him her master, and the encounter feels intensely real. When he wakes, he is shocked to find that the woman is actually present in his room. Fearing she might be a prostitute trying to trap or harm him, he flees. After a series of tense moments, he ends up having sex with her on a rooftop, where he discovers that Purimu is not human at all—she is a succubus, a pleasure demon. The story follows his gradual acceptance of this supernatural relationship as Purimu continues to appear in his life, often bringing him into contact with other otherworldly beings. Set in a modern everyday world, the narrative blends fantasy and romance with explicit adult content. Purimu’s true nature, her mysterious origin, and the harem of demonic and human women who later become involved form the core of the plot. Over the course of seventeen chapters, the protagonist navigates desire, fear, and a growing bond with Purimu, while also learning more about the mythological underpinnings of her world and the consequences of their connection. The manga is driven by episodic sexual encounters, but it also develops a light harem dynamic and a gradual, if unconventional, romantic arc that culminates in a completed conclusion.