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 is the power of the Stand 
even my bro fears, The Hand!
هذه هي قوّةُ الستاند الذي يخشاها
حتّى أخي والتي يُطلَقُ عليها اسم اليد
Das ist die Macht des Stands,
den sogar mein Boss fürchtet. The Hand.
Este es el poder del Stand
al que tanto teme mi hermano, The Hand.
Este es el poder del Stand
al que tanto teme mi hermano, The Hand.
Voici le pouvoir de mon Stand,
The Hand,
Questo è il potere del mio Stand, The Hand,
tanto temuto da mio fratello!
Este é o poder do The Hand,
que meu irmão tanto teme!