As the two largest nations on the Sains Continent, the Malo Empire and the Candel Empire together occupied more than half the continent's landmass.
Across their vast territories, the Two Great Empires shared a border more than ten thousand kilometers long. It ran horizontally through the middle of the Sains Continent, clearly dividing the Malo Empire in the north from the Candel Empire in the south.
Yet a look at the map revealed a conspicuous chunk carved out of this long border, right at the center of the continent.
But once one saw the name marked on that patch of land, its presence seemed perfectly natural.
For that land was called Sky City.
Sky City was undoubtedly the most extraordinary city on the continent, for one simple reason: it was home to the Mages' Guild Headquarters.
The Mages' Guild had been founded on the Sains Continent during the Race War three thousand years ago and had endured ever since.
Throughout those three thousand years, no matter how the continent had been thrown into turmoil or how nations had risen and fallen, no one had ever dared lay a hand on the land surrounding Sky City.
In everyone's eyes, this was the sacred ground of mages, the most mysterious and powerful city in the world.
Not only the Malo Empire and the Candel Empire, but even the Landis Empire, which had united the entire continent fifteen hundred years ago, had never dared march its armies a single step into this place.
Offending the Mages' Guild meant offending every mage on the continent.
Though called a city, Sky City covered an immense area, totaling more than three thousand square kilometers. Only the city at its heart could truly be considered Sky City; the surrounding land was the exclusive domain of the Mages'