Rohan has a feeling that Josuke is cheating at cee-lo, and cuts off his own pinky. If he is unable to figure out Josuke's trick in the next round, he says he will pay him 2 million yen to have him use Shining Diamond to fix his finger. But if Rohan does figure it out, he says he'll take Josuke's pinky instead. He even calls Tamami to act as a mediator, having him use his Stand ability so Josuke can't play fairly the next round, either.
In that time, I swear I will 
figure out how you're cheating.
وفي هذه المرّة أقسم أنّني سأكتشفُ حيلتك
Und dabei werde ich rausfinden,
wie du schummelst. Verlass dich drauf!
Juro que descubriré
cómo haces trampa en ese lapso.
Juro que descubriré
cómo haces trampa en ese lapso.
Ça me suffira pour découvrir
comment tu triches.
E in quest'ultima mano, giuro che scoprirò
come mi stai imbrogliando costi quel che costi.
E nesse meio tempo, vou dar um jeito
de descobrir como você está trapaceando.