The only one // Levi x Reader Modern AU

You are a young girl.No more than 16.Your sister,Hanji,likes using you as a lab rat.One day,she makes a mistake and everything goes wrong and you can't fix it!Your sister abandons you and you are left to die.But you meet a man called,Levi.He is 17 and he takes you in.But what happens if you start to fall for him?

PS this is my first fan fiction so it may be a bit bad! :3