Sorry folks (and thanks OP for uploading the game).
I initially had some problems with the battlecommands folder (which were sorted out, hopefully). If y'all have any problems with the latter, please let me know since that's likely my fault. I'm not sure if the OP used the translation patch I was messing with earlier tonight, since that had some bugs, so if you're getting a "battlecommands" error, use the patch from the link in my sig, which should be the most updated (it includes the updated System.json file, and a needed graphics file).
However, I haven't touched the audio folder at all, so I'm pretty sure that you need to change your locale to Japanese (there should be a few guides around on how to do that, since it's common for JRPG RPGMaker games to require that).
Lastly, if you need any help with the game in terms of tips and whatnot, I've included a ReadMe with tips as well as a walkthrough (not mine) that's google translated from Japanese.
Thanks all, and my apologies for any bugs. It took me about 9+ months to get this one down, and I'll be moving onto another translation soon, so hope you enjoy.