The Kokuryuteshi's Realm is home to one of the largest antagonist
organization in the known worlds. In truth, it is an ever-expanding
piece of rock that is roughly the size of our entire solar system.
Four hundred years ago, it used to be merely the size of an a small
island under the control of the Former Demon Lord, Ender. But, through
Kin's cunning, it has turned into a massive metropolis that has
never-ending resources, an immense population of warriors and many
different zones.