Only download repacks from the official site: fitgirl-repacks.site . Many fake sites exist that distribute malware. Always use an ad-blocker and ensure your antivirus is active.
Place all downloaded .rar parts into the same folder, right-click on ...part01.rar , and select "Extract Here." The software will automatically combine all parts into the game installer. 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. right-click on ...part01.rar