When the earth is being attacked or being ravaged by some force, the wisest thing for some people is to flee for a while and then return later whether to fight or to rebuild.
And then there is the coastline of Pandemonium which is suffering its own disaster.
The coastline of Pandemonium is one of the most active coastlines in the world
There are many port cities and there are also many kingdoms around the coastline and hills near the coastline.
Some even built a castle on top of a cape near the coastline.
There are cities up and below the water.
Some created their own underwater kingdoms.
But because of the nature of the Turbulent Sea, most of the underwater kingdom built by Disk Formation realm beings usually is still near the coastline.
And even though there are cities built underwater near the coastline, not all cities are allowed to be built near the coastline.
