The Hisui region (Different than the Sinnoh Region) has never had Gyms. Arceus deciding that that needs to change calls upon 8 champions of different worlds. Disclaimer, If you recognize anything I do not own it.
What if Harry was a Girl name Iris? What if she was abandoned and found by a forgotten deity and taken to another world for a whole other adventure? Gifted with new friends, new powers and new knowledge what would happen when she got back? WBWL FemHarry