Aion made the monster fly as fast as possible in direction of the dark clouds, and much to his surprise, the monsters around didn't chase him. It seemed that they were trying to avoid that area… the reason for that was unknown, but he was thankful for.
Aion used that chance to approach faster and recover mana, but then the monster and he collided against an invisible barrier around the mountain. That was a type of magic that he had never heard of… The monster suffered a lot of damage since it flew too fast. In the end, Aion jumped from the creature and then flew around the area, trying to sense and feel the limits of the barrier.
Some lightning bolts fell at the top of the barrier, but that didn't work to weaken it… Aion would have to think of a different way to open it aside from using brute strength. That might complicate things since Aion couldn't calm down after coming this far.