Board Thread:Speculation House/@comment-25574297-20141024020130/@comment-9090085-20141025180734

BenRG wrote: Everyone seems to have a guardian angel. It's just that Yang's is a Dark guardian angel.

Funny you should mention that; I noticed something about her that no-one seems to be talking about:

When our Mysterious Swordswoman teleports onto the train, the background goes dark; and after she teleports out, it brightens. Really! Watch the episode from when Neo is getting ready to kill Yang, and pay attention to the background.