Sinhwa Song Daemabeopsaui Jaerim

Hayool was supposed to be a genius mage and the next head of his clan, but when he turns out to be incompatible with magical AI, his friends and family expect him to give up on his dreams. Too determined to abandon his ambitions, he discovers a book written by the founder of magic itself, and it teaches him to do magic without AI. Suddenly much more powerful than his classmates and school bullies, it seems he might have a bright future after all—if he can survive the secret plots against him. (Source: Tapas)