The monster the world abandoned//Levi x Titanshifter! Reader {editing}

how did the captain fall for a titanshifter?

Y/n was a experiment to eren's dad.he used her to find out how to make titanshifters.but thats what she thought.but after she escapes she loses all memories of her past.she becomes a survey corps member a few years later. she haves only a few goals.

Her first, to get all of her memories
Her second, to protect eren
Her last, to kill the man who killed her parents