This specific ID belongs to a work titled (or similar translation), produced by the circle Kojo no Tsuki . The content is categorized under:
Focused on high-quality binaural recording to create an immersive "3D audio" experience. RJ438378.mp3
If you are looking for specific metadata (like the exact tracklist or duration), you can search for the "RJ" number directly on the DLsite website to find the official store page, which includes the creator's description and user reviews. This specific ID belongs to a work titled
Audio / ASMR (Autonomous Sensory Meridian Response) RJ438378.mp3
These files are generally designed for relaxation, sleep aid, or roleplay immersion for the listener. Technical Details