A fictional character in an established world

Through some manner unknown, a genie has found their way into another world. Perhaps through a wormhole, or some magical wish gone wrong. The Genie and the charm that bounds them within has safely made the journey, now waiting for someone to find and free them.

(THIS SECTION IS FOR ALREADY ESTABLISHED UNIVERSES, ANIME, CARTOONS, COMICS ETC. If you write here, just make sure the first chapter is an actual start to a story and not just a quickly written "this universe" chapter to try and get others to write for you, I will not accept that.)