So, Sakura Wars for the PS2 has two .cvm files (one for each layer), and I can't find a single program to extract either one.
I aim to translate the game (to Brazilian Portuguese, to be exact), and it seems all of the games files are inside the .CVM containers, so unpacking and repacking them is a necessity.
Interestingly, the only one that gives me SOME information sends a message requesting a password for encryption.
I'm not sure if the file is actually encrypted (Persona 3/4 have these kind of files as well, and you don't need a password as far as I know), but I for sure can't hack them.
Any help would be appreciated.
Here's the message in detail, for those curious: