I have a job and real life shit that takes up my free thinking time now but when I was a kid it was wild. First of all it was Pokemon, that was the universe I first started with. Built up my adventures there with my team of six bashed on the plushies I had. (Squirtle, Azural, Munchlax, Torkal, Alakazam, Charizard.)
The premise was that as a young child I somehow catapulted to the Pokemon world from ours. Misty found me and kind of was my adoptive mom/sister. I lived in the Cerulean city gym. I really developed the different techniques and personalities of the pokemon, thought I forgot what exactly the plot was. I would pretend I taught Azural to wrap her tail around peoples necks and choke them out though. There are a bunch of other misc details I remember, like how the gym was renovated so that everything was contacted through tubes of water that jet you to another room, so you had to hold your breath often. It was super comfy.
Anyways, I had these fantasies til around age 10, and then I started to move on to new things. See, in my multiverse lore, the pokemon universe was an anomaly in that it was completely separated from the other universes. Once you left you couldn't return. And one day, disaster struck, and I was catapulted to Hyrule field...
It's crazy how many details are coming back to me now that I sit and write it down. I was a nutty kid