Ah, I see! that explains why I felt like a lot of characters were suddenly dumped upon me without really knowing who they are... :D
Later on a bit slice-of-life trickles in again making the sprites better fit, but then maybe the more horror-style bgs are not so great. I like the music room vibes. If you don't have a bg artist, trying out some AI graphics might also be an option. Here's a very quick picture that I generated with NovelAI in the first attempt. There sure are imperfections in this picture, but usually they can be either solved by generating a few more pictures to choose from or they can be fixed with a graphic software (even if you are not an artist). See my blog for further reading: https://the-last-secret.mozellosite.com/news/
I think style-wise something like that might fit better, but of course I don't know your preferences... :)
