After losing to D'Arby, Joseph and Polnareff have their souls taken. In order to have their souls returned, Jotaro shows off Star Platinum's powers before going into a match with D'Arby, warning him that cheating won't work.
You will win. There's no doubt about it.
ستربح، لا شكَّ في الأمر
Vous allez gagner,
j’en suis certain.