The peculiarity of Arena's moons was that while they once were uninhabitable rocks that orbited Arena, thanks to many centuries of work, they had been terraformed into inhabitable miniature planets.
The fifth moon was known as such because it was the fifth in size, and on it, were built a dozen cities inhabited by the main branch, side branches, and servant families of the warrior who had defeated the patriarch of the former owning family.
But now, the fifth moon was completely empty.