great voice! really adds so much emotional weight to the piece. great dynamics and melodies. would like a wider stereo image in the climactic parts just to fill out the space and make it feel bigger there. would be good to drop to just the long harmonic vocals in a couple places to help keep the melodic lines interesting. there are some clashing vocal lines at 0:44 and again at 1:08, might be worth revisiting those and starting the top line on a higher note and coming down to create some contrary motion. i think the airy vocals are nice but could use a de-esser on the top around 8 to 9KHz, maybe even just a little dip in the EQ there to smooth it out. taikos and their reverb feel heavily compressed at 3:30 - comp before the reverb if you can, or try a lower ratio & slower release time. really cool piece though, make more!
important notes on my NGUAC review process: https://www.newgrounds.com/bbs/topic/1476427/18#bbspost26965604_post_text