Wanting to know how humans can use magic, Duncan Ishar `16` goes to the library every day for months to get his answers. But one day, a strange book appeared and sucked his soul. In the book he meets IRAWRATH, who is the embodiment of wrath and one of the seven deadly sins of the devil's realm. In the book, as he discovers more about himself and some truth about the magic of the humanity, now he must embark on a journey to summon all sins to protect this world against a formidable foe.