Contrary to a lot of children’s television today, there are a few permanent deaths in Miraculous. Season 4 also features Ladybug losing all the Miraculouses she had except for hers and Cat Noir’s.

Throughout Miraculous: Tales of Ladybug & Cat Noir, the titular heroes continuously take down villains who are trying to take their Miraculouses. Although they usually win the day, Cat Noir and ...

The Miraculous Ladybug doesn't erase her memory of it, so Cat Noir upgrades his power into a "Miraculous Cat Noir" that can destroy memories.