Hi! No, the demo doesn't end there. This is an oversight on my end - I knew there were instances like this where I've made some errors with some variables which leads to a dead end but didn't realize there were so many. I'm so sorry about that!
I was planning on fixing it properly next week since I'm currently in the process of writing more content for the final version of the demo, but I'll take the time I have today and tomorrow to go through the prologue and fix this instead. Thank you so much for reporting this!