Starfall: Love the 5/4, Very magical textures. Everything blends together nicely.
The Starry Sea: Beautiful while having a sense of mystery. Very nice work. Reminds me of Hollow Knight.
Shooting Star: The rhythm is so cool, I love how muted it is to allow the pretty atmosphere to shine over it.
One Summer Night: Love the vocaloid use! Very very good composition. The bells and general atmosphere remind me of some of my favorite tracks from the Tales series.
This was a fantastic OST. Great work!