Since these files are developed for Japanese systems, you might encounter "mojibake" (garbled text) or errors when launching the .exe .
The "RJ" prefix is used by DLsite , a major Japanese marketplace for indie (doujin) games, manga, and audio. H-RJ01019462.rar
Right-click the file and select "Extract Here." If the file is password-protected, the password is often the site URL where it was downloaded or simply the RJ-code itself. Since these files are developed for Japanese systems,