No matter what the Hei worshippers say but the fights are getting somewhat unbalanced. Hei is no match for other contractors and Suou of course has her doubts plus she's a n00b obviously. So, we end up having Yin mysteriously assassinating people when both Hei and Suou can't fight back.
I guess it makes the plot much less straight-forward if nothing else. Things won't be solved through brute force. Although seeing how Hei falls for traps, and according to the preview might do it again, I'm not sure he will manage to gather compensating methods either. I hope things won't proceed from now on totally following somebody else's notes, Hei only trying to survive all the twists.
I guess I sound a bit negative but actually I'm not that much. Suou kicking the lamppost was a nice and promising detail.