I hear the Christopher Larkin influence a lot in this, I love his music.
I think the three tracks flowed naturally between each other, I can see this being part of the same world. The introduction to track 3 was also really well done, it immediately gave me waterfall vibes!
I think 10,000 Hinoki Trees was weighted a bit too much on the low end, it gave the track a heavy and tight feeling that goes against what I imagine a forest would be like. This could just be an aesthetic choice though, the track was still really nice to listen to and connected tracks 1 and 3 well in the story you wrote in the description. The vocals in the middle of that track brought a nice lightness to the track and also kept it interesting!
Overall very nicely done, I enjoyed listening to the soundtrack.