Lilim Kiss is about a guy who is easily misunderstood, one day he finds a flask containing the succubus Lilim. She is very attractive but, she also has the tendency to drain the life force out of people. The girl, Lilim, turns out to be a succubus who gains energy by kissing guys. Lilim then flies off for more "food," but returns later, saying that Takaya's life-energy was the "tastiest." From then, Lilim is accepted by Takaya's parents as a live-in girlfriend of sorts, and Takaya's heart seems to start wavering towards this voluptuous devil.