Together with the game’s release, its soundtrack is also released at same day. Since I didn’t find it in Amazon when tried to order it, I ordered it from Tora no Ana which took time to actually arrive (and for me to pick it up since direct delivery costs something). Relevant files have been handed to someone for proper release (with tagging, etc).
The main theme song sure is good. I’ll copy up the lyrics here sometime later if I feel like to.
On barely related note, I’m still crawling forward the game. I don’t think I’ve even passed the common route yet.