Yongeul Samkin Mabeopsa

A low-ranking mage from a once-noble family, Russel Raymond is cursed and exiled from his academy. Struggling to survive as a hired swordsman, he discovers a keepsake from his mother that allows him to travel back in time to his academy years. There, he gains a new ability and begins working to restore his reputation and alter his future. He now has one opportunity to rise to his true potential.