Shadow worlds are basically a repetitions of history. To complete a shadow world, they must reach an opposite outcome of a real event in this story's history.
If the shadow world is not completed, a space in that world will become a wasteland.
@timesen
I would actually advise them to try Turb0's translation. His unreliable translation work (even with some mistakes) gives flavor to Kumo's unreliability and misunderstandings of the System. Blastron's work feels too perfect for me. Somewhat mechanical, as if something is lost in...