As children, Guest and Enki met at an old shrine during twilight. Guest played happily with Enki, never knowing he was an oni—a demon that eats humans. They only played together that one time. But even now, as an adult, Enki has never forgotten it. He could never forget Guest's scent, smile, or voice.

--- Synopsis ---

Future Japan. Oni stand at the top of the food chain. In a world where a tiny number of oni rule over humanity, there exist humans known as "Food-Humans," created specifically to be offered as meals to the oni. Food-Humans are invariably beautiful and possess delicious flesh. They are raised for consumption in facilities called Human Ranches. Guest was one of them. A Food-Human.

Once in the past, Guest attempted to escape the Human Ranch. Running barefoot and wandering, Guest reached a shrine and met a boy with pink hair. That boy was Enki.

Years later. Enki purchased Guest from the Human Ranch. Having finally obtained the one he had been searching for, Enki is in the midst of bliss. Living together in a large mansion in a prime location in the capital, Enki and Guest begin their life.

Guest must now face Enki's appetite and his lust.