Ssis-555-mr.mp4 -

: The Release Number . This is the unique identifier for the specific production within that series.

: Content with these codes is originally in Japanese. If you require translation, look for files appended with "-C" (Chinese subs) or search for external .srt (English) files using the "SSIS-555" ID. 4. Safety and Security SSIS-555-MR.mp4

: The Studio/Series Prefix . This identifies the production house or specific series. In this case, "SSIS" is a common label for the studio S1 No. 1 Style . : The Release Number