Sorry for the late reply. Yes, instead of two LIs and different routes that you can go back and forth on like Mizuchi, it'll be a bit more straightforward for one love interest. Choices will matter and may appear a bit differently for some of them (related to clothes), but it's no longer on a point system either. There are also only two endings unless I figure something else out. In case of the soundtrack, I was planning to release it eventually on Steam. I also got a hold of the composer and here are the various options to listen to the music as well :) Hope that helps!
https://open.spotify.com/album/1fQG3ESxiWryZTVCxlKVze?si=gl0Q21PKTBWEeO0knZ2RCA&utm
https://www.amazon.com/Mizuchi-Original-Video-Game-Soundtrack/dp/B08WVR9Z73