Try to read this topic about CPK (CRI) repacking: forum.xentax.com/viewtopic.php?f=10&t=7930
ToG US use even more new version of CPK packages: CPKMC2.18.04, DLL2.78.04
You can find CRIWARE SDK ver.3.07.00. I have tried, but unfortunately, without any good result.
Also i have tried to use unpacked files (rootR.cpk) without packed archive. Game don't want to use it, black screen. Somehow we must find more new version of packer or sdk.
Updated: created custom cpk file and game give me logo and some warning: ィンス卜ールデータにエラーがあります。ゲームを終了してから、インス卜ールデータを削眛して くださ
Google translation of warning: There is an error in the Bok Rudeta ~Insu. Exit from the game, be sure to remove the Rudeta 眛 Bok install
Ok, error like with replaced rootR.cpk from US version, but not black screen, like without rootR.cpk with unpacked files. Tried to repack Jap rootR.cpk, game give me logo + warning again. But the game was trying to read the .cpk.