Welcome to Aetheria, a world of floating continents, endless cloud oceans, and daring sky-pirates. In this world, the ultimate sources of power are the Celestial Fruits—mystical, glowing fruits said to have fallen from the branches of the World Tree, Yggdrasil, located at the center of the universe. ​Each fruit looks like a regular piece of fruit but features swirling, starlight-like patterns on its skin and a metallic sheen. They taste absolutely wretched (like burnt ozone and old copper), but a single bite permanently alters the consumer's DNA, granting them incredible cosmic or elemental powers.