Thank you so much for the review - we appreciate you took the time to type out your thoughts. Really glad you enjoyed it!
We tried to implement as many choices affecting later conversations or experiences as we could. We chose not to draw a lot of attention to it in terms of "character liked x" or "character will remember x" notifications so as not to break the flow of gameplay. There's quite a few smaller instances of conversations being altered by earlier decisions. (For example - bringing Kaitos to visit Oscar's chambers and angering him changes his attitude for the rest of the demo.)
Since the demo spans only one quest, long-term consequence was a bit hard to communicate here... however, the ending received in "In a Mansion Grand" does affect its surrounding quests in the full game. Hopefully it won't disappoint!
(During bugfixing today, I took a look into the links at the end not working, but couldn't replicate the problem. The moment I find out what's causing it, I'll patch that up.)