They walked around aimlessly in the Realm of Boundless Frost, at least that's what Sera called it. Qinrir never heard of this abandoned Realm, which wasn't too surprising.
There were millions or billions of Realms. The exact count was unknown, and most were either destroyed or never managed to support intelligent life. The Realm of Boundless Frost seemed to be the latter, since nothing existed here other than ruins transported through Gates.
These Realms were often referred to as Barren Realms. While they didn't develop their own form of life, they still held valuable resources. Many races also loved conquering Realms, since it gave them space to expand upon.
Strangely, even though most Realms were near infinite, many still struggled with overpopulation. Since food and wars weren't actual problems for most civilians, they could reproduce freely... The largest races had populations counting in quintillions or more...