To begin with, I'm fairly new to the game hacking scene. I normally only deal with scripts and graphical editing/ripping from Ace Attorney and Dai Gyakuten Saiban, so I apologize in advance for my ignorance.
I wish to extract graphical and sound assets from the Tengen Toppa Gurren Lagann game. Unfortunately, as with a few games in Japanese on the DS, the files are compressed into .nfp.
There are only two threads from 2008 (With this one
being the only one which appears to make major progress) which even touch upon the subject. The second one only briefly mentions that someone had created a tool to extract from it, and provides some basic information on addresses. However, the tool itself is not linked, and no further mention of the file format appears until a 2013 post on asking for information regarding the format.
Any assistance would be appreciated, either direct, or in pointing me in a good direction in regards to where to go to begin working with unknown compression formats.
An archive of the relevant files can be found here