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 no doubt that the worst thing 
imaginable is hiding in this city.
...لا شكّ في أنّ الأسوأ يختبئ في هذه المدينة
Zweifelsfrei versteckt es
sich irgendwo in der Stadt …
Algo se oculta en esta ciudad.
Algo se oculta en esta ciudad.
Quelque chose de vil
se cache dans cette ville.
Non c'è dubbio, in questa città
si nasconde qualcosa di raccapricciante...
Não há dúvidas de que
um mal terrível se esconde nesta cidade.