In this manga adaptation of the popular light novel series, the world's strongest sage will stop at nothing to get stronger... not even reincarnation! Matthias and his friends head to Boseil to confront the reincarnated chaos demon Zadogilgias. Even in his previous life as the powerful Gaius, Matthias was barely able to defeat Zadogilgias. Facing him now, before his magic power has matured, Matty stands little to no chance against one of his greatest foes. However, unlike in his past life as Gaius, Matthias now has reliable companions, and with a little luck, he may stand a chance against the chaos demon!