[ ] - 09 (b-global 1920x1080 Hevc Aac Mkv) [858... May 2026

: The File Container (Matroska). It is popular for anime because it can hold multiple audio tracks and subtitle files in a single file.

: This indicates the Source Platform , specifically Bilibili Global (the international version of the Chinese streaming giant Bilibili). [ ] - 09 (B-Global 1920x1080 HEVC AAC MKV) [858...

The filename follows a specific naming convention used in the anime community to denote high-quality digital releases sourced from international streaming platforms. File Naming Breakdown : The File Container (Matroska)