This is like, well, a lottery draw. Some Apocalyptic Planes don't even have a consolation prize, not a single Savior, and before long the entire world is destroyed and turns grey.
In a Plane, you might strike the jackpot right off the bat, with Saviors popping up like radishes, one after another, enough to form an army.
In such a Plane, you can stand against the difficulties of the brutal Apocalypse, then gradually pull the world back from the brink of destruction, rebuild homes, and herald a new era of humanity.
Plainly put, whether a world survives or perishes is a matter of luck.
She didn't know what sort of luck her own world had.
When she asked the Little Mermaid to search if there were any other Saviors around her location, the Little Mermaid shook its head.
"There are no other findings for the time being."
Does that mean, for now, she's the only one?
How is she supposed to fight the disasters of the entire world all by herself?!