Makoto has long been ostracized because of his odd hobbies and a sexual kink others would see as disgusting. One day he finds a book on summoning demons and manages to summon the intimidatingly beautiful and rather chatty Archduke J. The demon offers to grant Makoto's deepest twisted desire in exchange for his life. Once Makoto has sated his demented appetites, he fulfills his end of the bargain, only to find he's been reborn as a monster…in hell! 歪んだ性癖のせいで異常者”と言われ、一人ずっと苦しんできたマコトは、 ある日、半信半疑で手にした「悪魔を呼び出す本」を使い、召喚の儀を行った。 すると、そこに出てきたのは威厳ある美しい容姿に、ペラペラとよく喋る魔界の大公爵・Ｊ。 命と引き換えにマコトの秘めた願望を叶えてくれるというＪと命の契約を交わし、 マコトは悪魔として生まれ変わるが――!?