Behind Walls
But as time passed by, researchers were able to discover a material powerful enough to weaken them and even prevent them from approaching.
Months after their first appearance, humanity has some hope again that they'll be able to overcome the problem the world is facing.
After the discovery, countries around the world started placing walls fortified with Haliminium, the element that weakens and prevents Wamilas from ever approaching, around a limited number of cities.
With how limited the resource of Haliminium was, and how most of the countries were destroyed, they were only able to procure only a small amount of Haliminium.
Humanity were able to seek protection behind the walls that surroun