: Reinstates several tracks played during key boss fights and cutscenes that were swapped for the international version.
: Before extracting, go to your game directory (usually SteamApps\common\Yakuza 0\media ) and back up the data and movie folders. File: Yakuza.0.v4.0.zip ...
Because the Western release of the game had several licensed tracks removed or replaced due to licensing rights outside of Japan, fans created this "v4.0" archive to restore the original Japanese opening cinematic, ending credits, and specific in-game battle tracks. If you are looking to install this or explain it to others, : Reinstates several tracks played during key boss