I've completed the game yesterday, first run. I liked it. In fact, I liked it a lot. There are not too many LI, and you can build relationship slowly while learning about them. The graphics are well done and varied. The story is engaging. There are so many choices in the game that it is truely one you can replay a few times. Bravo to the team.
Since I've read so many positive reviews of Eternum, I will now buy it and start playing it today. If those comments are true, it should be as good if not better than 'Once...'