Meeting you (Levi x reader)

What if you suddenly arrived in aot world from the real world and you have the chance to change their world as you wish. Will you be able to make it better or worse? It depends on how (y/n) choose. 'Meeting you was a chance Levi, But loving you was more.' This is a Levi x reader story. All the characters from aot belong to Hajime Isayama except my storyline.