So, lack of time and all that. Played through my first route, in the way I generally do with this kind of game: first run is played as more or less myself, until I get a bad end/end up on a character's route; at which point I go for the good ending. Ended up on the Emi route (mildly ironic side note - several personality aspects overlap with my actual girlfriend) and got the Good end.
So, review so far:
Art style is good, but (and does this ever show how much anime I've watched/how many VNs I've played

) I got occasional bits of uncanny valley, believe it or not

. Some elements were just enough different from what I expected from the art style to be noticeable.
Music: well, so far I've played mostly with the sound down, so no real comment there.
Characters: Subdued somewhat, in a very good way. They weren't very over the top, or unrealistically stereotypical. You can care about them, and not just on a stereotypical level. They feel substantial and decently fleshed out, with real worries and cares that pull on your heartstrings. All in all, very happy here.
Plot: Well, I kind of say most of the Emi route was kind of predictable, but more than anything in that they stayed faithful to the character design they started with. No real "just go with it" jumps that make you lose track of their character. Pleased for the most part
Writing: The route seemed kind of short. Bear in mind, I'm a fast reader who turns the speed to instant in the options of most VNs. However, it seemed to be a solidly written piece, maybe not in terms of technical writing ability, but in consistency and in fleshing out and sticking with the characters' personalities, and with conveying emotion to the reader.
As a bit of a side note: I'm the kind of person who focuses heavily on the characters in a given story. I many ways, I view plot, music, and writing as all ways to enhance the characters, and without at least reasonably well-done characters, a story falls apart for me; I can't really get into it. Take that how you will, as a bit of a disclaimer.