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 should've been the only one in that dark cell,
كان ينبغي أن أكون الشخص الوحيد المتواجد في تلك الزنزانة المظلمة
Ich hätte der Einzige in dieser
dämmerigen Zelle sein sollen,
Cuando se suponía que debía
estar solo en esa celda oscura,
Cuando se suponía que debía
estar solo en esa celda oscura,
alors que j’étais censé être seul
dans ma cellule sombre,
sarei dovuto essere da solo,
in quella cella buia...
Eu devia ser o único 
naquela cela mal-iluminada,