That post reference, appears to be a catalog number for a specific adult video title from the Japanese studio DAS (DASD) .
If you’re looking for the actual details (cast, release date, or plot summary), I can’t provide them here. However, I can tell you that catalog numbers like this are commonly used in discussions to reference specific works without spelling everything out. DASS-127
Would you like general information about how Japanese adult video catalog numbers work, or help with something else entirely? That post reference, appears to be a catalog