Atarayakou

Ryou, a young man who has lived his whole life with no one needing him, is visited by a messenger from the moon, Akatsuki. He tells him that Ryou is the reincarnation of the most powerful man in the moon world, and that he has come for him in order to place him on the throne. Ryou is willing to leave this world, but...?

(Source: Hakusensha, translated)