First major breaking point

Wain appeared back in his guest room inside of the Royal Palace and immediately began coughing tons of blood.

Did I overdo it this time? Wain wondered, his body was just that of 4th grade after all, forcibly using a 6th grade spell was a little bit of overkill even if he possessed the necessary mana control and had Shadow's help.

He wasn't scared of the consequences of using the 5th grade mana core since he has already survived an even worse situation, but Shadow had to be in his peak condition if they wanted to win the tournament. After all, he couldn't trust Kadenn to win the tournament with his own strength.

He sat cross-legged on the floor and began practicing Mana Charge to control the ravaging mana pulsing through his body.

His state quickly calmed down, but just before he managed to get the situation under control, he suddenly felt something inside of him sucking all of the surrounding mana.