This story is based in the current city of the movie Astro boy (2009) where now boy fights are illegal and you must have a permit to own a highly dangerous robot to have it Rome around the city not causing trouble or it’ll be destroyed.
The character isn’t based of the movie battle Alita. She’s an oc I created a week ago as the name suited her but she will be renamed in the story so don’t worry.
This story is a mix of both Astro boy and battle Alita bits but like I said before it’s mainly in Astro’s city and you will be underground where people secretly make highly dangerous robots for battle and use them in battle races to get a ball destroying their opponents for it and win the game. But there are different tiers and to win you would need to go through months of battles to get to the champion tier and win victorious becoming the champion and the most dangerous robot down there.