Jotaro and Koichi try to track down the owner of the button and run into the murderer, Yoshikage Kira and his Stand, Killer Queen's bomb, Heart Attack at Centipede Shoes. Koichi wants to go after Kira, but Jotaro tells him not to. However, Koichi isn't satisfied with Jotaro's decision and decides to act on his own, right when Sheer Heart Attack attacks again...