Randy Cunningham and (Y/n) (L/n): 9th Grade Ninja and Miraculous User

[DISCOUNTINUED AND REWRITEN ELSEWHERE]
(A/n: I need help! How can I stop this random creative streak? I randomly came up with this idea after about a week of watching Randy Cunningham. The Miraculous is the bat, just like in another story, but the reader's background is different and I'll change up a few things of her Miraculous too.)
"Who are you?"
"The name's Komori. I'm here to help."
(Y/n) is a Japanese French Tomboy who moved to Norrisville from Paris because her Father had found a job there for a certain industry. She wasn't just an ordinary girl, however. She was the youngest Miraculous User among the trio of Paris' heroes. While Chat Noir and Ladybug were in 10th when they first got their miraculous, she got her Miraculous when she was only in 8th! It had been a year since Hawkmoth was defeated, but they weren't done and protected the city still. How will she react when her first fight in her new school if with a... weird multi-animal, robot, human hybrid? Things are definitely not normal here. She's glad she's not alone at least. Her partner is none other than the new chosen Ninja. However... will she find some more things in this new town.
However, how is the bat Miraculous connected to the history of the Ninja?