This indicates the collection includes all 5 volumes of the series.
The text you provided appears to be a specific filename or "release title" for a digital manga archive. This indicates the collection includes all 5 volumes
.tar is an archive format used to group multiple files together. This indicates the collection includes all 5 volumes
.zst indicates the archive has been compressed using , a fast compression algorithm. How to open this file This indicates the collection includes all 5 volumes