I hate numbering systems.
I like the concept and the smart character design (which based off your past work your pretty damn skilled at). This is a simplified project, and I think you could add a bit more features to improve the UI and storytelling without too much effort.
+There needs to be a numbering "page" system so the viewer knows just how many pages he or she is into. Clicking through the pages one at a time was a bit exasperating once I realized that I never knew when this project would end. A simple fraction of pages read would be helpful once included in the corners.
+First page takes a while, and other pages take less than 10 seconds to finish. It'd be nice if you could structure your stories to balance the time spent on each page.
+Some minimal animation might help per page. I know your capable of fine art, and wanted just make something simple, but a 3 second loop may maintain more interest in each page while the narrator speaks at length.
+ I also suggest eliminating as much text as possible--even for dialog in-between characters. It's hard to read that, interpret the picture, and listen to you all at the same time. It's literally three different forms of communication at once and all nuances are lost in the storytelling. For example, I would opt for symbols or smaller graphics in the dialog boxes rather than actual text.
+StopAllSounds tage should be added in-between the final page and the restart of the new story as sounds overlap into the replay.
Keep at it!