An Outcast (Steven Universe x Male Gem Reader x MCU)

For as long as you can remember, you just wanted to be accepted for being what you are. On your home planet you were considered a corrupted gem by becoming one and only male gem in existance, which lead you to being banished by the Diamonds. You were left in a small ship which you was given to you by Pink Diamond for almost your entire existance.
Almost, because one day, you finally decided that it was time to come out, and try to have a normal life. For all of the years after coming out of your ship, you just traveled around, meeting some interesting people who you grew to care about, and more importantly you found a place to call home, a planet with the people who accepted you as one of their own, and even found people who you grew to love as your own family.
Unfortunely, this was short lived, because one day, this planet was attacked, and half of it's population murdered by the forces of the being you grew to hate more than the Diamonds.
Ever since that happened, you went back to your old way of life and started to live a life of a mercenary, never really stayed anywhere for a long period of time, and practically isolated yourself from everyone, except for a few exceptions, one of them being Shi'ra, a space huntress you grew to love as your own sister.
However, everything may change for you when you receive a contract from a man known as the Collector bring him a certain gem from the Earth.
A crossover between Steven Universe and MCU (Avengers Infinity War and Avengers Endgame)
I own nothing except for some parts of the story, and the OC's.
SpinelxMaleReader