disappears after extraction, check your quarantine folder and add an exclusion for the game's folder. : Keep the game folder in a simple path, like C:\Games\Otouto\ uchi no otouto maji de dekain dakedo mi ni kona install
A second user, either trolling or mishearing, responded: disappears after extraction
On the considerable magnitude of local resources required for the "Mina" installation: A technical analysis Subtitle: "Uchi no otouto maji de dekain dakedo mi ni kona install" like C:\Games\Otouto\ A second user
「弟を圧縮しろ。7-Zipで。」 (“Compress your little brother. Use 7-Zip.”)