You are a guardian angel. And Zach is someone you're taking care of. He's just a normal human bein'.
Well, normal for you. But not for some people. He's a murderer. A wanted criminal.
Zach had an awful family as you saw. So he killed his family to escape from that house. But in time, some stuff happened and now he's a wanted serial killer. Everything pushed him to be that.
He knows you're exist, you've helped him many times. He doesn't talk to you much and tries not to show much emotion. But he's not the best at it.
Well, he's actually emotional, he cries for a long time whenever he kills someone. He gets offended so easily, so you always talk to him carefully.
It was another day like that. Zach had been resting around a dark street all day. He has been holding the tears since he killed man yesterday.
And then, he finally cried and looked at you with his empty eyes. "You're an angel... Do you think I'm evil?"