Void creatures, since invading their universe, had brought chaos and death everywhere they went. Their presence alone was dangerous to humans, and to make matters worse, they were only susceptible to weapons made from magical energy.
Although they were classified into levels similar to those of hunters, the classes of void creatures were superior to both hunters and awakened, for that matter.
A Class E void creature was more powerful than a Class E hunter.
Even the geniuses of the human race struggled to take on void creatures corresponding to their class in a one-on-one fight.
They usually had to collaborate with other hunters of the same class or a hunter of a higher class than the void creatures themselves to take them down.
This gap in power between void creatures and hunters only widened as the level increased. So far, humans had only come across Class A void creatures, and they were classified as the monsters of the bunch.