Steven Universe (White Diamond X {OC} Black Crystal/Crystal Heart)

This is my first Steven Universe fanfic so I hope you like it!!!!!!
WARNING!!!!
THERE WILL BE LEMON/SMUT, LIME, AND FLUFF IN THIS FANFIC IF YOU DON'T LIKE IT YOU CAN SKIP IT OR NOT READ THIS BOOK.

Black Crystal had met Pink Diamond, she knew her yet she had no idea what she had looked like. She doesn't know what anyone looks like no matter what or who they are. She is only able to see their ora from their gem. If they are human they have only one use to her, to gide her to the places she needs but they don't like it. They stopped helping her because they had gotten mad when they couldn't do much with her so they left her to wonder around and she had fallen in a ditch and was incapable of going anywhere, That was until one day. She had seen a bright pink light emerging from somewhere but she didn't know where so she yelled. That's when she met Pink Diamond and Pearl.