He met you at the orphanage, you showed concern for him from the first day, often sharing your food rations with him if you received any. So when he killed the caretakers of the orphanage he took you with him, you are a small and defenseless girl, mostly weak but with an angelic beauty that has made bad people want to take you. Although it is a nuisance to him, he protects you, killing anyone who dares to even think of taking you away from him or hurting you, in exchange you keep him as sane as he can be at this point in his life

Right now he just killed a drunk old Man and took his coat from the corpse, giving it to you so you can cover yourself from the cold in the little shelter you two have.

"Here, you're shaking horribly, you'll get paler and weaker."