This game is literally so good, it has everything a person may need in their life. Rhythm gameplay with banger music? Hell yeah. Fascinating well written story? Yep. Fishing minigame full of unique fishes? Uh huh. And most importantly lesbians? OFC IT HAS THAT.
I hope that's enough to convince a person to play this masterpiece (because they should).

This game is unironically one of the worst pieces of literature I've ever had the misfortune of laying my sorry eyes upon. It's written like a 12 year old writes fan fiction. Puzzles are god awful. Music kinda good tho, only upside. Save yourself the time you'd waste on this game and go for a walk instead.

As a rhythm game: I LOVE the concept. The charting is great in the higher levels (I only play Finale and Encore). I've only played through chapter one, but the story, puzzles, and ARG elements are extremely interesting.
However, the VSRG engine itself could use a little extra love (as of 4.0.5) as my mid-high tier pc (ryzen 7 5700x) stutters often enough to get mad when going for AC attempts. (even with particles off, and fps locked to my vsync)
I was initially confused about the developers disapproval of modding, but came to a few conclusions:
1) modding may/may not spoil story elements
2) often times, games get defined by their modding community, which shouldn't be the case for a story game
3) perhaps the publisher disallows it for licencing reasons

Overall: 9.5/10
Gameplay: 9/10
Story: 10/10 (through chapter 1)
Music: 10/10
Charting: 10/10 (diff 10 and above)