642 Legendary Key’s Location (2)

Hidden in the dense fog, the colossal silhouette that Jacob saw that day was actually a floating island, the origin of the fog surrounding the plain below and in the air. 

This floating island was probably the only one in the entire Unique Plains and a wonder of nature, but no one had ever been able to see it, and those who did were never able to live to tell the tale. 

Because this No Return Zone was one of the most dangerous zones in the entire Unique Plains, known as the Vicious Calamity Fog Zone, not even Inspection Legend Rank experts dared venture into its depth. 

As for why was this name given? Rumor has it that there is a strange Fog somewhere in this zone that can devour anything and everything. No one knows the origin of that fog.