: Additional story scenarios or "H-scenes" that were not present in the initial release. Quality of Life Improvements

Translated, "kono ojousama muchi ni tsuki" roughly translates to "This Princess is Muchi's Moon" or could be interpreted in various ways, but it seems to refer to a specific title. The addition of "v30" suggests it might be version 30 of the game or content, and "rj01311216" seems to be an identifier code often used on Japanese adult content sites.