Diamond is Unbreakable - Chapter 11 
Jotaro arrives at Josuke's house and is welcomed by Tomoko, who thinks he is Joseph. Jotaro explains that he is not Joseph but his grandson. He asks Tomoko where Josuke is and she tells him that he is not back from school yet.
While driving, Jotaro looks at a picture of Enya with a Bow and Arrow. The Speedwagon Foundation told him that Enya used the Bow and Arrow to create many Stands, including DIO's, The World. Jotaro realizes from the number of Stands in such a small town that someone in Morioh must have the Bow and Arrow.
Josuke sees that Koichi has been dragged inside by Okuyasu's brother, who is introduced as Keicho Nijimura, with the Stand Bad Company. Keicho says that the Arrow is very precious to him and he will not let anyone take it. Okuyasu comes inside and tells Keicho that he is not defeated yet, but is quickly shot in the face by many tiny bullets. Keicho tells Okuyasu that he is stupid for standing directly in Bad Company's line of fire just as he managed to lure Josuke inside.