: It could also represent a high-definition video or a large software package.
The file is a split archive —the first part of a larger compressed file. To access its contents, you need to have all the numbered parts (e.g., .001 , .002 , .003 , etc.) in the same folder and use a file archiver like 7-Zip or WinRAR . How to Extract the File SS-Nin-038_s.7z.001
Select > Extract Here (or choose a destination folder). : It could also represent a high-definition video