An incubus named Forni is terrible at sexual matters, which is a serious problem because his kind needs sex to survive. Starving and collapsed on the street, he is taken in by Harumi, a popular host club worker. That night, Forni sneaks into Harumi’s dream to feed, but he has no idea what he is doing. Harumi, confused but amused by the situation, ends up guiding Forni through the experience, teaching him how to enjoy and express pleasure. As the arrangement continues, Forni moves in with Harumi, and their relationship deepens beyond mere survival. The story unfolds in a contemporary urban setting with a supernatural twist: Forni’s feeding occurs inside Harumi’s dreams, where reality and fantasy blur. The narrative follows the two as they navigate Forni’s learning curve, Harumi’s growing affection, and the humorous, awkward, and tender moments that arise from a succubus who needs a hands-on teacher.