Well, I haven't solved this one yet, but I the visuals were fantastic and the concept was really neat.
I don't typically play games like this, but if you continue to tinker with it, it would be nice to have visual indicators of the dialogues I've already selected as well as a notebook to remember what I've learned. It's hard for me to remember who I talked to and what to go back and see, so I found myself just clicking through options one after another to try to find that bit of dialogue I almost (but didn't quite) remember.
Again, really standout visuals and hand-crafted sets, and just some great work on the story. I've got this one on my replay list to try to solve this mystery.