Yuuma, an unloved host, strikes a deal with the incubus demon, Airucus, to fulfill his desires. The pact's unusual terms demand Yuuma to bear Ai's offspring. Despite his inability to conceive, Yuuma benefits from Ai's unique essence, leading to unexpected changes in his well-being. As Yuuma's dependency on Ai grows, he finds himself craving for more of the demon's essence. Will Yuuma ultimately birth an incubus heir or cling to his unpopularity? A challenging dilemma awaits!