: The release group. "NC" typically stands for "No Cleanup" or refers to a specific group known for providing untouched "raw" versions of anime episodes directly from broadcast or streaming sources. 02 : This identifies the release as Episode 2 of the series.
This title format is common on distribution sites like Nyaa or AniDB . Here is what each part of the tag represents: [NC-Raws] - 02 (B-Global 3840x2160 HEVC AAC MKV...
: A versatile file container that can hold multiple audio tracks, subtitle files, and chapters in a single file. Content Context : The release group