[And Aang starts to get the impression that this killing isn't as clean-cut as Mithos suggested. There has to be more to it.]

Not a lot. [He was hesitant; he didn't want to put Raine on the spot like this, but he also knew that lying to Mithos could set him off.] Mostly that... you're not safe. And I want my friends and family to be safe. That's all. I don't want trouble.