I felt that bass melody in Echoes of the Shrine is a bit too busy. You have a lot of other things, it kinda distracts from a magnificent shamisen and percussion.
Also I think in some tracks the shamisen or koto was a bit too loud. For example in Hozuki Village I’d lower both koto and flute a bit
I think you’ll benefit from not making the busy rhytms as long, for example in shattered silence shamisen was a bit overwhelming
Overall your submission brought me a lot of joy, I love shamisen and koto experiments :D