Twelve Kindgoms AU where Satsuki is a kirin and chooses Ryuko, who’s a taika (and the red streak appears in her hair when she crosses over). Of course they get separated and have to find each other amidst some sort of power-vaccum conflict in the kingdom Ryuko is set to rule over. Mako helps her get around without getting killed, etc. (and is kind of like her dumb, spastic Rakushun). Eventually they find each other and lead a coup to put Ryuko on the throne. Her first decree has something to do with public nudity.
I’m just hoping at least one of you gets this lol