As of this writing, direct searches for RJ01177758 on DLsite’s English or Japanese site may return “no results” if the product is hidden (adult content requiring login) or delisted. RJ01195 is too short to be valid — it likely means RJ01195xx.
are unique identifiers used primarily on DLsite (the largest platform for doujin games, manga, and audio works). eng lookhac dlc v22 rj01177758 rj01195 exclusive
If you want a tailored essay (longer, with citations, or focused on legality, community reaction, or technical reverse-engineering), tell me which angle and how many words you need. As of this writing, direct searches for RJ01177758