For now I'm only at the Tanuki part. But here are my impressions so far.
First of, although you talked about it in your description, the text is unfathomably slow.
Secondly, is this even a game or just some story with an almost non existing choice of answers? So far I have more the impression of the latter. I will not judge it as good or bad regarding that, but that makes the "guide Junko" kind of false, its more "accompany" or "witness" Junko.
Thirdly the transition from scene to scene is kind of done poorly. First I was talking to Hayami, then suddenly without having any choice or notion of what I'm up against, I'm talking with Nana or whatever the fish-octopus-girl-thing is, without me even understanding how I went from the castle to the pound, and then bam, brought to the Tanuki without any choice.
Lastly, there seems to be some minor errors in the text. Like some punctuation where a coma should have be used instead of a period which therefore cuts in half a sentence that should be one and only.
Apart from this, the art-work is good, and the music serves its purpose well, being not to repetitive, varied, and with loops long enough to be enjoyable.
I will refrain from giving it any definitive rating until I go further on.