One of the best visual novels out there and I recommend it to everyone! Eternum does a wonderful job at pacing the story, which is incredibly intriguing. The characters and dialog are well written and likeable. Not to mention the combination of renders, animation and audio are top notch.
The only real 'complaint' (if you can call it that) is regarding the release cycle. I understand wanting to end releases on cliffhangers or ensure releases contain meaningful story progression and character development, but waiting 6 to 9 months between releases can be painful.
Sometimes I wonder if having much smaller releases every 3 to 4 months would be better. Often times I end up having to replay the story before every release to re-familiarize myself with the plot. Again, not really a complaint, more than likely just an observation that stems from my impatience for such a wonderful visual novel.