I remember reading in this thread: http://gbatemp.net/threads/undubbing...-plume.141381/
That someone by the handle name 'sinbatsu' on the gbatemp forums was able to put the English text of the localized version of VP:CotP into the Japanese version of the game due to how "undubbing" the localized version proved to be almost impossible since one of the reasons included that the localized version did not have voiced cutscenes while the Japanese version did.
Unfortunately for people such as I who caught onto to this glorious project late, the links to patching the Japanese version of the game died. If some kind soul who was able to download the files before it was taken down or someone who has a patched version of the game could reupload it, that would be greatly appreciated.
Thank you in advance!