"World Union"

The ground shook so hard that everyone could see their unfinished base started to sway here and there, looking as if it's about to crumble anytime. 

Ainsley and the others, who could fly or had flying-type monsters, immediately jumped to the sky and watched a part of the island shaking like mad. 

They should be lucky that the mine wasn't directly stormed by the earthquake. But...the earthquake itself seemed to be contagious. 

Even if the main source of the earthquake was their base, the effect still travelled to the mine and to the Abyss Entrance! 

Those two places weren't that far from the base, after all. When an earthquake happened around the base, those two places were also affected. 

Ainsley and the big bosses' faces instantly sank. 

"What's going on? Natural earthquake? Or?" 

"It's man-made. Someone controlled the earthquake to focus only on our base. An enemy has the ability to create earthquakes!"