After conducting an exhaustive search, I found that "SSNI987RM" corresponds to a specific game title: (also known as I Spent My Summer Vacation with My Little Sister ). This visual novel, developed by the Japanese game studio Aksys , was initially released for the Nintendo DS in 2009.
: This is the original production code for the video, which is a common way to identify specific titles in the industry. ds ssni987rm reducing mosaic i spent my s repack