This is the sequential volume or release number within that specific series.
On social media and file-sharing networks, these codes allow users to discuss specific content without using explicit keywords that might trigger automated filters. Contextual Warning
Content enthusiasts use these "magic numbers" or codes for several reasons:
This usually identifies the production studio or the specific series. In the context of Japanese media distribution, these prefixes act like a brand label.
It is much easier to find a specific video using a unique code like DLDSS-157 than a descriptive title, which may be translated differently across various platforms.