Land of Steel

Land of Steel (鋼の大地) [over count 1999] is the name of the world in the time of Notes. It is not the official name, but a nickname passed down by those who live on the dead planet.

As the name indicates, the continents are mostly cracked wasteland, and the sky is covered with gray and sepia clouds. Food can't be grown, and the atmosphere is no longer suited for animals. But even after the mother planet died, the humans were able to live on with their developed civic technology.