When your attraction includes consuming a demon's intestines, what else can you do but summon a delightful demon for some fun? Makoto summons a demon to satisfy every odd desire of his, and in exchange for eating the demon's intestines, he will give his life! Makoto has been isolated for a long time due to his strange hobbies and a sexual preference that others find repulsive. One day, he summons Archduke J, a mischievous demon from hell, and sells his soul to him, only to end up unwittingly reborn in hell...as J's demon servant! As he learns and evolves in his new role, his obsession with J turns into a fixation, a fixation to surpass the very demon that birthed him.