[Ding! You killed tier 4 monster]
[Ding! You gained ten coins]
[Ding! You killed tier 5 monster]
[Ding! You gained ten coins]
With time, the level of the monsters appearing around the academy kept rising up. However Aroon didn't see any challenge from them against the forces of the academy.
The academy kept sending their netvors to control the situation. Aroon even saw many flying netvors watching over those fighting on the ground.
"Fighting netvors... I believe they are grade A or higher," he thought while moving his eyes towards Christy. "What grade is she in?"
The higher the grade the stronger the netvor that was given. But grade A or higher was a milestone for obtaining a very unique ability; flying.
Of course humans tried to add gears to help other lower grades netvors to fly. Just like what Christy and others had flying rockets when they arrived at the city.