Super emotive, loved every second of it! If this is just a starter, I am really looking forward to the full version.
I think the repetition of the melody works well. It's not overbearing, and it sticks in my mind. I'd imagine this would make a nice platform to work off of for composing the other pieces for the visual novel.
Mix is actually super clean and dynamic! Really enjoyed the instrumentation. Your selection of sounds work very well together and you've placed them nicely. Just a small gripe with the way the percussion is introduced at 1:12. Bringing them in with a closed low pass feels a bit strange, especially because they are panned and quite bassy. I would have liked to hear a bit more mids and less bass. Obviously it's a stylistic choice, and I'm slightly un-attuned to the nuances of cinematic music; but, this is literally the only thing which didn't resonate with me.
Fantastic work! How many more themes are there to make?