Ruby and Saccharina as soulmates is fun to me.
Saccharina potentially after having Lazuli taken from her wakes to find a thin red string tied to her finger, and it is a buoy, because there it is there is the proof that there is someone out there who will love her. The idea of a family is good but they could leave like her mom, but a soulmate wouldn't, their souls would be intertwined, how could they leave her.
Ruby meanwhile has a large mint green handprint on her back (where Saccharina grabbed her for that teleport) that she can hardly stand looking at it but can't give a strong reason why, (it's because why wouldn't it be Jet, Jet's soulmate is her, maybe there is a small handprint of Jet maybe, but in what world would this person she hadn't known since she first opened her eyes would matter more then Jet (the one where Jet isn't there to be with her))
Then they meet, they don't realize right away, why would they, this person sucks, but one time Saccharina tries to take solace in that she knows there is someone out there, until she realizes the string is latched right around Ruby's heart, and it's the first time that she feels like actually shouting, and for a single moment this au is a comedy in the starkest sense.
Afterward is a look to the idea of soulmates with the lens of, this is someone who shares your soul, The love is not guaranteed it has to be worked toward. Plus them both looking at each other and realizing they had ascribed emotion to the other immediately without the concept that they are a full person, and can you know them, and will you try.












