Elden Ring: The moon lord

Before the elden beast came from the stars, before the great tree dominated, there were three cities; the eternal cities, the people of that city; The Nox had a prophecy ignored: "One day, The lunar will, the outer god of the moon, the heir of the outer god, will walk these lands, conquer and dominate, aaaaa... may the age of the stars come... make nox eternal." This novel will be inspired by other works. anything different from the original, consider an AU as the story of Elden ring is big and there may or may not be differences left open for the community to "choose" the best.