Character change: The Akame Princess to...Akame.(Ready)

[Minato Namikaze]

Lastly, other people cannot hold Murasame without having an affinity. It will reject their use of it, and the blade will get shorter and duller the more it used by another person.

This isn't a thing, if someone takes the sword from her, it's classed as an incidental weapon and wont work as well as it would if it was a purchased move anyway. If someone mimics the sword, then it works on their own stats.

Armor does not need to be purchased as a move. It is usually used as a physical representation of a character's defense stat, that is, unless you want the armor to act as a power up, then you'll need to purchase it as such.

As for your Super move, How long is the limb rendered ineffective for? you also need Debuff for this. A move (super moves included) cannot be more or less effective against any other type of move or Character, so this would work against robotic and mechanical enemies (By stopping power to the limb she strikes?), You could still have the stipulation that it has to actually make a cut But it's a super move, so it's most likely going to cut if it hits.