Angelo's Stand ability was brought forth by the mysterious bow and arrow, and apparently they're also connected to DIO. After defeating Angelo, Jotaro thought that the danger had left the city, and tries to find the whereabouts of the bow and arrow. A few days later, Koichi is walking home with Josuke, and they pass a house that should be empty...
There's something up with 
that right hand of yours.
ثمّة مُشكلة ما في يدِك اليُمنى تلك
Irgendetwas Seltsames geht
mit deiner rechten Hand ab.
Tu mano derecha alberga un secreto.
Tu mano derecha alberga un secreto.
Ta main droite a une particularité.
La tua maledetta mano destra
nasconde qualcosa...
Você tem algum truque 
nessa sua mão direita.