Japanese voice acting in the game (Bullet Witch)

On Nexus.mods, just yesterday, May 8, an enthusiast offered for the PC version of Bullet Witch the original Japanese voice acting for the entire game, including videos, to replace English. I know that the theme of the game is dead and the fans of the game cried the cat, but maybe it will still interest someone. I registered on the site a long time ago and therefore downloaded the proposed archive without any problems. I could have put it on the playground, but I don't know how to do it, and I'm not sure if anyone needs it. For me personally, the Japanese voice acting went much more than the English one, so I did not hesitate to replace it - from English to Japanese.