Hello! Thank you for your detailed and honest feedback. We're thrilled to hear that you enjoyed the game and the art. Eightway did an amazing job portraying Rei and Jin!
We're also glad to see that you noticed the contrast between Belle and Rei. That was definitely one of our aims, especially since choices can influence Rei's personality to a relatively large extent even in this early version of the demo. As for whether Rei is an ordinary person, anti-hero, or troubled person--you'll just have to wait and find out!
The stats page and CG gallery will be featured in our next build, which will be coming out in the next coming months. However, the stats themselves are already active and influence branching within the current build.
In regards to the price of the full game, are still details we need to work out, but if the game were to go commercial, a rough estimation would place the full release anywhere between $5-$10 depending on the amount of content and additional features in the game.
Thank you once again for playing The Glass Coffin!
(P.S. We appreciate the suggestion! The tag has been added.)