World Key

My name is Melody Cosmos. I know that because I have a mark on my arm that is a music note intertwining with a cosmos flower. I'm not a normal girl, I mean waking up to find that you're not in the same world you belong to, it's part of my life now. I can't tell you how inconvenient it is. Especially when you are one year away from high school! I have to say, I don't know why I have to go to so many worlds and achieve the world key, but for some reason I have to do it. I guess time will tell with each world, maybe I will even learn a few things.