Do you believe in reincarnation?
Did you know that we can live forever if you're touched by magic or a god?
In which Marinette finds out that she is immortal, thanks to the Miraculous. She also learns that she has to deal with other changes to her body.
She slowly meets the past Ladybugs and slowly learns that even though one day she will be left behind by her Kwami, she will always have a roll in this world in protecting it.
Once you have been touched by a god, or been blessed with magic, you become part of that god and magic. You can become a god.