Asgard rose first. Asgard fell hardest. The gods built an empire that would outlive them all.
After the universe was forged, before human mythology was written, before the gods descended to Earth — there was Asgard.
The first civilisation. The original empire of the cosmos. Rising in the aftermath of creation, Asgard was the first great order to emerge from the young universe — the mightiest rulers existence had yet produced, governing from a realm that predated Earth, predated humanity, predated every mythology that would later carry their memory. Human mythology did not invent Asgard; it remembered it.
Realm Eternal is the chronicle of that empire's full arc: its founding in the wake of creation, the golden age of its dominion over a young universe, the slow fractures that power on that scale inevitably produces, and the fall that ended the first and greatest age of cosmic order. It is also the story of what Asgard left behind — the echoes, the descendants, the old allegiances and older wounds that are still working themselves out in every Era that follows.
Although published third in the Aethereal Chronicles series, Realm Eternal covers the period immediately following The First War — the age when the newly-formed universe produced its first great civilisation. The publication order begins with creation itself, moves through the descent of primordial beings to Earth in Battle for Earth, and then returns to the age between creation and the descent — the era of Asgard's rise and fall — to complete the picture of the Primordial Era.
Realm Eternal sits between the cosmic genesis of The First War and the descent of primordial beings in Battle for Earth. Asgard rose from the universe that the First War made possible, dominated it at its height, and its fall sent ripples forward into every Era that followed. The beings who descended to Earth carried Asgard's legacy — its power structures, its conflicts, its unfinished business. Every story in every Library connects, in some fashion, to what Asgard was and what its fall released.