The OST for Ne No Kami is now available as DLC here on Steam! You can pick it up at https://store.steampowered.com/app/911080/Ne_no_Kami__The_Two_Princess_Knights_of_Kyoto_Original_Soundtrack/
In addition to the game's background music, this release also includes the game's theme song and a special new arrangement of one of the songs by Emmanuel Lagumbay.
If you backed for the OST key on IndieGoGo, please check your email for a message from Backerkit containing your download code.