I don't usually go for fantasy visual novels, but this is amazing! I was immediately drawn into this strange world of tense politics and complicated individuals. You did an incredible job of developing the storyline and the setting, and balancing it all with charming character interactions.
The characters are so engaging. I'm fascinated by all of the characters' histories and relationships--Pious's relationship with Egon and her girl? Lana's past? I want to find out more about all of them!
It's refreshing to play as an MC who has such an awesome personality + that we still have control over Lana's dialogue. I like how you pointed out which one of the options leads to romance with Egon (I went for romance right away!!) and that each choice elicits a different response. The banter between Lana and Egon is hilarious, as is Karel and Kitt (that frying pan?? YES).
The backgrounds, character design, and special art scenes are stunning. (Egon, Kieran, and Karel? mmmm :P)
My only complaint would be the fade-in-fade-out transition of the text boxes; kinda made my head spin after a while, especially because there are so many lines of text. I found myself clicking through the other characters' dialogue as quickly as possible, in order to get back to Lana and Egon. I also wish there was a rewind option on the dialogue; I know there is a pop-up box where you can read through all the text, but it'd be nice to go back to reverse our choices (especially because some of the response choices are a bit vague; at one I made Egon annoyed when I thought it was a witty remark!).
Overall, what an outstanding, polished demo with a fascinating plot and line of characters! I'm hooked and can't wait to play more.
EDIT: Mini-games are such a fun idea. Love it!