Bravo, Jynx and crew. This was really well done - a fitting tribute and well done extension to the source material! Maybe a few more checkpoints, but for the length and nature of the game that sort of thing was easily ignorable.
Also, if you ever decide/get permission to release that music box cover of mumei I would love it, if not the full ost. Really good job of mixing the motifs of the song into the various chapters.