In the world of digital media, cryptic filenames are a form of shorthand among release groups. While no official source references this exact string, each segment likely tells a part of the story.
: Since "engsub" is specified, check if the translation is accurate and timed correctly so it doesn't lag behind the speech.
Based on this code, here is a text-based summary of its typical meaning:
Many anime, TV show, and film fans have their own forums and private trackers where content is shared using internal identifiers. Searching for (including the quotation marks) on these specialized forums might be successful.