Managed to get my hands on the Japanese CD rip.
I didn't bother specifying artists for each individual track, but if you are interested in doing so you can simple refer to the Steam version for that.
Edit - For you in the future, who found this after the torrent has died: You can find this all the other lossless soundtracks, tagged and all, on Soulseek.
Comments - 7
Ingenioussubs
KrYzZ
cerulis (uploader)
warmsnow
kkcm5000
zrdb
NyaaSeeder