His protector (levi x reader)

You have a horrible past, your parents sold you the day you were born, tested on by scientists. This is what made you heartless and emotionless, one day they tested a new liquid in your body, not getting the results they want, they left you on the streets. Wanting to die thinking this was your end when someone comes to you and gives you a reason to life, when on your way you meet new people and possibly fall for someone and he does to. But what happenes when he suddenly drifts apart. What will you do? Who will you meet on the way?

(This is my first book so please don't be hard on me, i don't own attack on titans or any songs or drawings I use)