Place all parts in the same folder and extract only the first part ( .001 or the primary .7z file).
did you download this file from? (e.g., a specific creator's Patreon or store) SS-LilTS-002_s.7z
Look for files named SS-LilTS-002.7z.001 , SS-LilTS-002.7z.002 , or similar, including SS-LilTS-002_s.7z (which may be part 1 or a standalone file). Place all parts in the same folder and