Firstly, I wanted to say that the production values are absolutely through the roof. The backgrounds, animations, GUI, music selections, and citations are all masterfully done. The narrative voice is unique, with countless clever lines coming out of nowhere. You obviously follow the theme of expansion in a dedicated and creative way, and the Hetalia-style personification was very cool. This is an extremely well-polished VN, and I understand you put a tremendous amount of work into this project.
However, I must say that it is a very hard read. As an ignorant American, I was immediately put off by the influx of territories, dates, quotes, and people. It's difficult to follow the historical events, and I ended up getting lost in the sea of information to the point where I could only focus on the cast of the 'irl' scenes of the main three.
Of course, their banter and complicated relationships across the various 'dates' were really fun prose, and I found myself laughing at the absurdity of it all multiple times. Perhaps the target audience is meant to be people from Finland, but I was glad to be educated on an important historical event that I previously knew nothing about in such a clever way.