This torrent includes unaltered Muv-Luv Supplement fandisk. The main point of interest on this disk is Muv-Luv Duelist, since the rest of it's contents were later re-packaged in Muv-Luv photonflowers*. The game is known to crash a lot on newer Windows versions, but this torrent includes the patch which fixes that (https://vndb.org/r94526). Just make sure to copy it to the game folder after installation while agreeing to replace files. VNDB link: Muv-Luv Supplement/マブラヴ サプリメント https://vndb.org/v404