Very eye-catching art. I thought the time limit was a bit too short and didn't add to the game. It made me skip through the dialog without having much time to consider what was said. I think pausing the timer during dialog would alleviate the issue.
The epilog text was a bit hard to follow without any visual aid. I lost track of the character names and relationships while reading. It seemed like the mystery was pretty well thought out, but probably needed a longer setup to reach its potential.