First, you'll need this[github.com] tool. It's a cmd prompt tool built for looking through files. Windows/Linux x86/64 builds are included but I assume you're using Win x64. If not, use the correct version for your system. As the file we're interacting with is less than 2GB, you can use either version, but if you ever plan on taking this to a file bigger than that, you'll want to use the x64 version.

With the tool you've got downloaded, return to the page I asked you to download it from. Scroll down and take a gander at the Options menu? Can you make heads or tails of it? If you can, cool, it's a little easier than most command line switch interfaces. If not, don't worry. Tom will help you.

Either way, extract the right folder to somewhere easy to get to.

Navigate to the folder you've extracted the version correct for your system to, and shift+right click and choose Open Command Window Here. This will open, hey presto, a command window, right at that directory! This is where things are gonna get really cool. But we're not ready yet. Set up a directory where you want to put all these delicious audiobites. Remember its location and ♥♥♥♥♥♥♥♥♥ TIME TO FREE HOX!

Sorry. Remember the folder's location. We'll call it <extractionpath>. Now browse to your Mitsurugi Kamui Hikae installation directory and find the file data0.kpk. Got it? We're calling it <pathtodata>.

Okay, now it's time for the magic. Bring that command window back into focus. What we're typing is as follows:



And do be aware of those double commas surrounding each path. They let spaces work.

So for example, mine would be


and yours, with one main drive, could be something like:

However, that won't work. Blame admin priveledges. You'll need to copy it to somewhere that's not admin-protected. A good idea would be to copy it to your mediaextract folder. This would have the added benefit of meaning your <pathtodata> would be simply data0.kpk. No quotes. Just simply data0.kpk.
Let it run and do its business. Browse to the extracted folder, play and enjoy!

(A/N oh god tables in markup help me)