It's incredible what can be done with minimal graphics and little technical whizbang. The story is top notch and very compelling. The dialogue is phenomenal. I loved this game. Great job!
One little thing is I thought that the emotion balloons actually detracted from the whole experience as they actually yanked me out of the somber mood created by the dialogue at times due to their anime cuteness. But it may just be a personal preference.
I hope you develop this game further. I am definitely interested in seeing more of this game.