The Blite Mountain was one of the many strange events and changes that emerged when the apocalypse descended on Earth.
Just like the fire region Klaus entered months ago, where he killed those five fire beasts, the Blite Mountain is a zone for lightning monsters.
Only lightning-type monsters and beasts reside there.
It's located somewhere in the Austria Union, where Overlord Isaac resides.
It was once a forbidden zone, but after Overlord Isaac cleared it due to its danger, it became a place for lightning cultivators to practice.
However, three weeks ago, reports reached the academy that three Tier 9 beasts had taken residence there and were continually attacking the humans training in the area.
The War God of that region and the warriors kept holding them back, but the beasts only seemed to grow more furious and aggressive by the day.
This was why, when reports reached Old Lu, he gave the mission to Klaus to handle it.