When the lighter was relit, Polpo's Stand, Shadow Sabbath, appeared and attacked. Giorno is able to see through Shadow Sabbath's weakness and faces it alongside Koichi. Koichi realizes that the arrow is involved in this situation and they realize that the point of Polpo's exam is to try to create more Stand users.
but he'd have no way of knowing 
that you and I are Stand users.
لكن من المستحيل أن يعلم بأنّك
وأنا مستخدِما ستاند
Aber das verrät ihm wohl kaum,
dass einer von uns ein Stand-Nutzer ist.
pero no tendría cómo saber
que somos usuarios de Stand.
pero no tendría cómo saber
que somos usuarios de Stand.
mais aucune chance qu’il ait découvert
l’existence de ton Stand.
In nessun modo avrebbe potuto sapere
che io e te siamo portatori di Stand.
Mas ele não tem como saber
que somos usuários de Stand.
Но ему никак не узнать, 
что мы с тобой обладаем стендами.