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.
This isn't just one enemy.
They're an organization.
عدوّنا ليس مجرّد شخص. إنّما منظّمة
Das ist nicht nur ein Feind,
das ist eine ganze Bande.
El enemigo no es uno solo,
es una organización.
El enemigo no es uno solo,
es una organización.
Notre ennemi est la mafia,
pas un gars isolé.
Qui il nemico non è una sola persona, 
ma un'intera organizzazione.
O inimigo não está sozinho.
Ele é uma organização.
У нас не один враг, это организация.