Levi-Nii: A Levi x Reader Fanfic

You are (Y/N) Ackerman, Levi's little sister. You guys are really close, almost inseperable. What happens after you guys move out of the Underground?
NOTE: I DO NOT OWN ATTACK ON TITAN AND I DEFENITLY DO NOT OWN YOU
NOTE #2: YOU BELONG TO LEVI (hehe)
NOTE #3: THIS WILL NOT EXACTLY FOLLOW THE ANIME
NOTE #4: SORRY IF LEVI IS OOC