You are a Gem who was in the gem war and was shattered and ended up in the rubble Soon you were found by the Crystal Gems and they brought you back to the temple and Steven heals your Gem. You soon get out of your gem and you have amnesia

Pearl: Do you have amnesia (gem oc name)?

Amethyst: It sure seems like they do.

Garnet: Steven, your call.

Steven: We should help them get their memory back and Show them Earth!

Pearl: That seems like a great idea!

They lead you into town