Karen (Mermaid Melody)

I created a world that is the center point for all anime dimensions. the main spot is a room so large it seems infinite, because it holds doors and au pathways to every anime. the appearance and aging of the door allows wewe to tell what kind of anime it is, and it has a name plate beside it so that wewe know its title, very few manage to find let alone, reach the world and see it, and are soon sent back. The world isn't originally supposed to be known, but (just for future reference all of my fanfiction characters originate from this world despite their profiles, after their 'missions' are done,...