: RJ146434 leads directly to the official product page on DLsite , where you can verify the version history, system requirements, and official patch logs.
If you are looking for the "paper" (documentation or instructions) for this file, standard practice for RJ-coded archives includes: RJ146434_-_NTRPG2_MarieXmas.7z
: Usually available on the DLsite Store Page under the "Manual" or "Update" tab. : RJ146434 leads directly to the official product