Japanese indie developers (doujin circles) were notoriously creative about protecting their work. Unlike western DRM, which often required an online check, doujin games used offline logic. The password was a "Paper DRM."
It prevents other websites from directly "hotlinking" to their files without users ever visiting the main site to find the decryption key. otomigames password
Otomi Games is a website dedicated to sharing a wide variety of adult-oriented games, including Japanese Hentai games, adult digital novels, and . which often required an online check