Resilience Of Two Mad Forest Brothers

Large-scale beast waves didn't occur suddenly; instead, they took years to grow in intensity. Initially, there would be several smaller waves. Over time, these would escalate to mid-scale waves, and only after a few more years would they reach the magnitude of a large-scale beast wave.

This pattern had been well-documented, occurring consistently for tens of thousands of years.

The overlords of the region were aware of this cycle. After the last mid-scale beast wave, they anticipated that the time for a large-scale wave was approaching. These waves often lasted over a year and involved countless beasts wandering out of their native regions.

The weakest beasts were the first to leave their habitats, driven out by stronger beasts deeper within the forests. Ordinary soldiers could usually handle these initial threats, as they were Spirit Beasts rather than Immortal Beasts.