or that one time the Destined One was starstruck (literally?)
in my head this is after the Destined One and my OC have been traveling for a while and now and established a good form of communication too despite the Destined One being silent. He noticed that she never allows her herself to cry in front of him, figured it might be because she didn't want people to see her cry. And then something something happened where she reached her limit and broke down. Seeing her cry was simultaneouslythe most beautiful and heartbreaking thing he has seen.
one piece x steven universe au where instead of being a crystal gem, luffy is sort of a rogue who flies around in a spaceship adventuring through space and making/recruiting friends on different planets and gem colonies, he was inspired by earthlings and now he wants to live freely without the constraints of gem roles and expectations (tagging this with #gem piece)