The Eldians are a race in Sacred Seven anime series. They were originally an earth-like people who lived on the planet until long ago, when seven of their number (angels) saved their kind from destruction at the hands of demons by fleeing to another world.
They have since come to rule this other world as gods-Kingship is handed down in each generation to whichever member of the royal family can most convincingly rock out with an enchanted guitar and gets to do some justice or whatever party stuff like saving everyone with it, erm…I think that’s it? Just what I remember from Sacred Seven. I’m not sure if they were later changed into humans or not though.