Earth?
Earth, but a little different. There's more magic but other than that it's pretty much the same.
Formerly residents of a universe serperate from Earth, but they lost all of their powers and fell to Earth.
6 Humans who were cursed by various magics to be colourful. It was prophecised that they would save the world... But from what..?
This code doesn't look great on mobile. I'm not apologizing, I just can't find another one. Oh well.