The Imperial Nether Clan was one of the Four Paramount Devil Clans. All the devils in the Devil Domain had once waged war against the various surface races. As one of the strongest devil clans, the Imperial Nether Clan had naturally led a charge into the surface world during those wars as well.

That was how part of the Imperial Nether Clan came to settle on the surface world during the ancient times. At the same time, they still maintained their power and authority at the deepest layers of the Devil Domain.

Generally, the imperial clans were loath to even leave the deepest layers. The only exception would be if a war was to erupt with the surface world again. Over the years, few wars had erupted between the Devil Domain and the surface...