Kirikiri Unencypted Archives

[ozerune]

I'm trying to compress the game 9-nine-:Episode 1, which uses the Kirikiri engine. Because the data files are encrypted, I can't compress it as efficiently as I could be. I have been able to use GARbro to extract some of the archives (when they don't have multiple files with the same name), and tried to use KirikiriTools' Xp3Pack and version.dll to get the game to read from these unencrypted archives to no success. Would anyone with more experience with Kirikiri game modding be able to give me any tips?