Okay, finally finished the game. Took an unimaginably long time. The new update did make hitboxes a bit better but there were still a lot that were just a bit too small. I think more locations should have some white graphics to make it much easier to know where stuff is in relation to each other. Also, a minor thing but you cant see the names of items in the suitcase once you pick them up, which is a little annoying. I think the puzzles themselves, though, were mostly fine if it weren't for the visual issue, except for one at the beginning of the game, where,
SPOILERS (there isnt an option to black out text in itchio unfortunately)
after the first action you do on an npc, which ends up failing in the story, you have to go back to the mansion to interact with a previously uninteractable object to get an item.
SPOILERS END
aside from the problems with the gameplay itself though. I found the writing itself to be fun, the voice acting especially elevating it with how chiptune-y(?) it sounds. Though Reimu's VA in particular had her voice quality worse than the other characters for some reason. The music and animations for the characters were also pretty nice. The cutscenes were especially fun to watch. The story also has a pretty funny ending puzzle.
Though I recommend someone to play this after the dev makes a hintbook, as it's very easy atm to miss an item somewhere and get stuck unless you look at every nook and cranny.