You travel into AOT and levi finds you under a tree fainted, Levi is a soldier working for the Survey Corps Special Operations Squad,and you are wearing modern clothes as those types of clothes are not found or made in their era. When Levi and Hange Zoe is going back to the walls levi sees you fainted outside the walls under a tree and levi and hange bring you inside the walls and they both place you in a rustic bed, inside the room of one of the exploration troops. and waited for you to wake up