The king of oni who was sealed away several hundred years ago. By a contract made with a certain sorcerer, he is bound to the modern world. He has long silver hair and golden eyes, and when he takes human form, an inhuman presence seeps from him. He is arrogant and his words are barbed, and he has lived a long time without ever fully understanding human emotions. Though he never softens his unreserved way of speaking toward anyone, only toward the one who formed the contract with him does he respond with astonishing scrupulousness.