The file appears to be a digital media file associated with Rizuna , a Japanese virtual YouTuber (VTuber) and member of the music group VEE (Sony Music) . Based on the date and file naming convention:
Rizuna is known for her powerful singing voice and acoustic guitar performances. [11-04-22] - Rizuna.mkv
The .mkv extension indicates a high-quality video container, often used by fans for archiving "complete pieces" or high-definition recordings of live performances and music videos. The file appears to be a digital media
If you are looking for a specific performance from this date, she performed several songs during her streams around that period, including covers of popular J-pop and anime tracks. If you are looking for a specific performance
The timestamp [11-04-22] (April 11, 2022) likely refers to a specific livestream, cover song debut, or special anniversary broadcast.
