The code refers to a specific digital product—most likely an audio work or ASMR title—hosted on the Japanese platform DLsite . Digital files from this platform are typically distributed as .rar or .zip archives. Product Overview
If the filenames appear as garbled text (mojibake) after extraction, you may need to use a tool like Locale Emulator or set your system locale to Japanese, as the internal filenames are often encoded in Shift-JIS.
Codes starting with "RJ" (Radio Jockey) are reserved for audio dramas , ASMR , and voice works . Downloading and Security