Berlatar di dunia fantasi yang bergantung dengan kekuatan sihir, Shikkakumon no Saikyo Kenja menceritakan petualangan Matthias Hildesheimer melawan para Iblis. Sebenarnya, Matthias adalah reinkarnasi petapa sihir bernama Gaius yang tidak puas dengan lambang ( crest) di tangannya. Shikkakumon no Saikyou Kenja. At birth, mages randomly acquire one of the four "crests" that represents the extent of their magical capability. Equipped with a crest specializing in creation, a man named Gaius reached the ceiling of his potential, becoming known as the world's strongest sage. Despite his overwhelming power, he is unsatisfied DbGOQ.