I basically reviewed this in a comment, whoops. Then, an exercise in distillation and iteration:

I've only seen the Nami route so far, but: great progression and magnitude!

The pacing regarding the downtime between rounds on the board was rather awkward, owing in large part to the unintuitive puzzles. The doll pieces were not very discernable, the letter behind the door was almost too dark to notice, and the "equation" one is only obvious to those who already know the answer - to others, it is all but impregnable (ha ha). The puzzles being more of an obstacle than the creator finds them means that the pacing is way off of what was intended.

Still gets a 5 star rating as it hits most of the beats I find most important in such games! The pacing issue from the puzzles is far and away the biggest problem in my view, but as long as the rest of the game is as good as what I've seen, then it can be forgiven (though fixing it would be a significant improvement!)