Always consult the game's licensing terms. Most Japanese developers tolerate non-commercial translation patches, but explicitly forbid asset ripping for AI training or commercial projects.
RePKG is a popular open-source tool for extracting and repacking Wallpaper Engine files. : scenepkg unpacker full
Full versions are updated to handle newer encryption or compression methods used in updated software versions. How to Use a ScenePKG Unpacker Always consult the game's licensing terms