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...
This arrow is very precious. 
It's the only one there is.
هذا السّهم ثمينٌ جداً ولديّ واحد فقط
Dieser Pfeil … ist sehr wertvoll
und ich habe nur diesen einen.
Esta flecha es muy valiosa
e irreemplazable.
Esta flecha es muy valiosa
e irreemplazable.
Cette flèche est très précieuse,
il n’y en a qu’une.
Questa freccia... è molto preziosa,
ne esiste una sola al mondo.
Esta flecha é muito preciosa, 
e só tenho uma dela.