Wow
First off, I'd like to say that I haven't logged onto Newgrounds in over two years. I logged on just for this review, so feel honored!
You said this relies on mood, indeed it does. The language that they spoke gave it a different feel than most other flash animations do. Then again, there was just so little that it was perfect. There didn't need to be talking in this, the silence did the talking for it.
This was true art and this is why Newgrounds was founded. Congratulations on a very well built animation.