Xenaths

The Red Moon is one of the moons surrounding Disboard. Its unknown whether or not it has an alternate name. While its true size is unknown, the outwards perspective we are able to see in Episode 12 allows us to conclude its roughly 1/9 the size of Disboard. Currently Lunamana is the only race inhabiting it, and lay on the other "dark" side of the moon. Little else is known about them, but due to their lack of presence in Light Novel Volume 6 and No Game No Life: Zero, its plausible they played little role in the The Great War, at least towards its end.

The great Phantasma Avant Heim rises with the moon to gain extra magical ability, but also weeps whenever the Red Moon is at its peak.