In the deep sea located in the northwest direction of the Desert Empire, it is quiet and dark, no longer bustling with the prosperity of the time when the Ten Great Undersea Kingdoms stood together.
On the vast seabed, those large cities once ruled by Merfolk, Fishman, Sea Dragon People, Jellyfish People, Electric Eel People, Turtle-man... and other sub-human species, have mostly become ruins under the series of attacks from the Blood Beast Nest.
On the vast seafloor, not a single normal creature that fits human aesthetics can be found.
Instead, there are countless degenerate sea monsters, Fishman transformed by cnidarian infections, and various Kin under the Mother of Monsters' command.
One after another, flesh nests surrounded by orange-red Soup of Life have risen, extending from the calm and quiet sea basin to the wave-tossed sea surface, forming a three-dimensional colossal city.
