Problems with Elemental systems
I had an idea about making a power system have elemental affinities as in elements you're better with but I'm that case would there be like many users of the same affinity? also there are innates basically like a personal shikai or bankai or cursed technique yk something only you can do, could be teleportation or anything
EDIT: Look at Black Clover, many people can have the same element so I don't know if that's bad or good
EDIT 2: What if the test only determines whether your attribute is related with said reaction so like the paper catching paper means fire so what if that just meant his ability deals with some?