Because it is a multi-part archive ( part01 , part02 , etc.), you must download all parts listed on the official FitGirl Repacks site for the game to function.
This string refers to a for a Demon Slayer video game (likely The Hinokami Chronicles ) sourced from the FitGirl Repacks website. Demon Slayer -- fitgirl-repacks.site --.part01.rar
This is the first file ( .part01 ) of a compressed game installation package. FitGirl Repacks are known for highly compressing games to make download sizes smaller. Because it is a multi-part archive ( part01 , part02 , etc