Thank you so much for the in-depth review! You've noticed a lot of things that I wasn't sure anyone would! Like the synth representing the sun, the humanistic synth at the end of False Sun of Shadow, and the ambient sound layering. I've started to become obsessed with boss music that doesn't sound like boss music because it makes you think about the music in less of a combat way and in more of a storytelling way and how to build intensity around the boss character and their past. It's less of a "I have to fight this boss" and more of a "this is why I have to fight this boss", I think that way of writing boss music is interesting and can also help when writing more conventional boss music
Thanks again for listening, I really appreciate your review!