Deadly Contemplation Contaminator

Can the owners of miraculous ladybug and cat noir make it so that there is a way for master fu to remember his memory but only once ladybug masters being a guardian then she can bring back master for his memory and instead of making it where they forget the memory they remember it but it any place and time they can make themselves forget everything and the only one who can make them remember is the current guardian and later on in the series can ladybug and cat noir reveal their identities to each other