The rules to survive are simple. One: don’t touch the black water, or you’ll die. Two: only crazy people leave the islands, because the entire world is covered in that water. Three: the Sundered Ones aren’t people. Don’t see them as people. Don’t get attached. They’re tools, and like any tool, you use them until they’re worn out, then throw them away.
The rules are wrong. The world is ending. In this broken, flooded world, even hope has a price.