The person hiding in the mirror was Illuso from the Hitman Team. Fugo ends up being dragged into the mirror by Illuso's Stand, Mirrorman. Fugo then summons his own Stand, Purple Smoke. Despite Giorno wanting to find Fugo, Abbacchio decides to go look for the key, since that was their mission. However, once Abbacchio finds the key, he also gets dragged into the mirror world...
W-We did it! We're outside the mirror!
!فـ-فعلناها! خرجنا من المرآة
W-Wir haben es geschafft!
Wir sind wieder draußen!
¡Lo hicimos! ¡Salimos del espejo!
¡Lo hicimos! ¡Salimos del espejo!
Génial ! On est sortis du miroir !
C-Ce l'abbiamo fatta!
Siamo fuori dallo specchio!
C-Conseguimos!
Saímos do espelho!
Ура… Справились! Мы снова снаружи!