The prefix designates that the work is a digital product intended for a general or mature audience. The numeric sequence 01311216 acts as the exact product ID.
Bootleg copies are often heavily compressed, destroying the binaural ASMR effect that requires high-fidelity audio. kono ojousama muchi ni tsuki rj01311216 link
The voice acting leverages a refined, polite, yet incredibly naive persona. Expect highly formal Japanese vocabulary paired with comedic or cute misunderstandings of ordinary tasks. The prefix designates that the work is a
