An au where Fu lost the Ladybug and Cat Miraculous instead
Gabriel has the Black Cat Miraculous and calls himself "Le Nuit" (he wanted to at least sound dangerous as a grown-up man in the leather cat costume. It didn't work out)
Emilie's death was a result of wrongly used Cataclysm
Nathalie has Ladybug earrings and calls herself Ruby Bug
Even though as Nathalie she has a clear slate, she uses her Miraculous mainly for the sake of robbing rich people, sometimes to get some cash, sometimes to relieve her stress from handling the Agrestes. She kinda went Megalomaniac tho, and when she found out about other Miraculouses, she made it her goal to get at least some of them.
They never told each other that they have a Miraculous
As Ruby Bug gets more dangerous, master Fu recruits Malachite (Butterfly!Adrien) and Lady Paon (Peacock!Marinette)
Le Nuit joins Ruby Bug's side, intending to betray her, steal her earrings and revieve Emilie
But he finds himself slowly falling for her instead, while Nathalie falls for his civillian self
