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...
I can't believe you showed up 
at a time like this, Joseph!
!لا أصدِّقُ أنّك أتيت في وقتٍ كهذا يا جوزيف
Ich kann kaum glauben, dass du
einfach so auftauchst, Joseph!
¡No puedo creer que vinieras
justo ahora, Joseph!
¡Es increíble que hayas vuelto
justo ahora, Joseph!
Tu arrives toujours
quand il faut, Joseph !
Come hai fatto ad arrivare
proprio ora, Joseph?!
Nunca imaginaria que você fosse
voltar logo agora, Joseph!