I'm a librarian who loves anime, manga, and reading a wide variety of genres.
This was upsetting. I thought this was better, in a lot of ways, than The Haunting of Hill House, but I don't know that I'd ever want to re-listen to/re-read it. And I just realized that I never did get my biggest questions answered.
Edit: Oh, and I need to pick a Halloween Bingo square for this. I'm going to go with 13. I don't know if Jonas was ever described, but on the cover he's a black cat.