Any chance of a Linux release? It looks like you're using Ren'Py, which makes it suuper easy to just click the Linux button and upload to itch.io. I'd be happy to test it if you like, but in my experience Ren'Py's releases are pretty problem-free.
The builds currently uploaded are actually Ren'py's Windows/Linux combination packages, I just didn't want to mark them as Linux-compatible since I hadn't tested them myself. You can grab the demo and see if it works!
OK, great! Yeah, the demo seems to run fine just as it is. Wow, you have some amazing cinematics and animations and sound design... excited to play the whole thing!