During XV2's intro (narrated by Trunks) the language always remains English regardless if you select Japanese voices from the title screen menu. This mod will set the intro's dialogue to Japanese.

To restore it back to the English dialogue simply delete the files from the mod.

NOTE: This will only replace the voices/dialogue and not the music, so if you're using a custom music mod it will still work.

Here's a video of the intro with the Japanese voices. FYI I'm using a ReShade filter and AGUSLK 's Japanese Music Mod.

https://www.youtube.com/watch?v=4Lqmqv5LFWk