errors when extracting files

[queenieee]

ive downloaded the Ariard -Shounen Alice- and Taishou Mebiusline from here
what i got:
240699593_772273426859879_6927470566188550253_n.png
but when i try to extract them with 7zip, i get the error "cannot open file as archive". ive been stuck here all night honestly dont know what to do. any help would be greatly appreciated
2.jpg

[Cheremonda]

Hello queenieee,
The 7zip error probably means at least the first file is corrupted, since the error message says CRC also failed (it's a check for data corruption; https://en.wikipedia.org/wiki/Cyclic_redundancy_check).
Check to see if the torrent might have a version of the files that aren't corrupted, or try redownloading the first rar file (001) to see if it's a download issue.