"Enough to not look like an idiot" There was no way he could use magic the way he did without any knowledge of mana. His parents had made sure he had enough basic knowledge of the stuff to cast spells. Xi on the other hand was another story; before he had entered the academy, he had never even heard of the place. In fact, he found all of his academic classes to be a real hand full. Luckily, he had enough combat experience that he could devote all of his time to studying and didn't need to train to keep up in the more physical classes. "And I don't mind listening to a story" he welcomed it in fact, he needed something to occupy his mind