The Last Magus by MDJ

Aiden prepared his whole life for one thing, being a mage. So when the day comes to test his affinity for magic and start his journey he found himself crushed when he discovers he has no affinity for magic.

Without purpose and desperate for a solution he uncovers a staff that possesses the spirit of Kyrun the Last Magus an extremely powerful being who is also known as one of the greatest enemies of the Xen Empire. Now set on a new path Aiden must decide if he wants to take the advice of a villain or forge a different path altogether.