Regarding the Mouse of Abundance, what are the rules regarding unification in conjunction with this one? It's my understanding the Mouse can't duplicate living things besides its own holder, so I've imagined a scenario where the Mouse splits and each unifies afterwards with a different secondary. But I just read your Calamity Dusk story and I'm confused how Chimera's copies were utilizing multiple powers when the jewels are the bodies of the kwamis (and therefore living things?). Please explain.
In regard to a unified!Mouse using Multitude: They will make multiple copies of themselves all bearing the same costume of the first unification. However Miraculouses themselves cannot be multiplied via Multitude or Plenitude. Instead what happens is each Miraculous will be on a certain copy depending on how the older wants it divided up, and only said copy can use the power of that Miraculous.
This kinda goes for the Mouse Miraculous as well, you have to find the right copy in order to find the Mouse Miraculous. The "original" copy will always have the Mouse Miraculous, and the will always be the one the Multitude returns to when they use Solitude.
AKA I think the Mouse dividing and then unifying separately with different Miraculouses like we saw in canon without taking a lot of strain is too OP so they have unified first but even then the powers are still divided out.
