A Deal With Two

"If abilities are created by the gods, then Arts are the creation of humans. Abilities are the gates to use mana to impact the world, leading to external or internal phenomena, that are considered outside of the norm." The bald old man told them in the lecture hall. 

'Well, my Art would disagree.' Arthur thought with his hand underneath his chin. Beside him, Oliver was snorting. Yesterday's party seems to have taken a toll on him. Arthur didn't drink a lot, for obvious reasons. They were in a giant lecture hall, lectured by a man about Arts. 

"What's the required level for us to use Arts?" A student asked. 

"Great phrasing. There's a difference between using and training, as using the art in battle requires liquified mana. To say, you need to be at the Rei-rank. However, since a large portion of you are only at the neo-rank, you'll only be allowed to train your Arts." 

"And what if we use it in battle?" The same student asked.