I want to rip from a game released only in Japan on PS2 called "Jigoku Shoujo Mioyosuga" developed by Compile Heart. More info for curious people on the game or franchise : https://en.wikipedia.org/wiki/Hell_Girl#Video_games or https://gamefaqs.gamespot.com/ps2/961167-jigoku-shoujo-mioyosuga
I've extracted the files from the game and it seems most of the game data is stored in .PTD archives (other files are .PSS that are movies files). There are 11 PTD files and I don't know if they are encrypted or compressed. What I've noticed is that it seems there is a file index table named "PTDALL.PID" which seems to contain the location of files and data but I'm not very familiar with it so I'm not sure.
Maybe with some bms script it will be possible to extract everything so thanks for the people that will be able to do this.
Download link of the files : https://drive.google.com/file/d/1IIgGjkqZBM__VNdzehLaWAFwmuNUGckl/view?usp=sharing. The PTD files are in the DATA folder.