i notice something in every jojo episodes joseph when he was 15, kills a 2000+ years old vampire jotaro when he was 15, kills 123 years old vampire josuke when he was 15, kills 33 years old murderer emperio when he was 11, kills 30 years old s*xual man johnny when he was about 20, kills 30 years old 23th america's president isnt this strange?
Yes, but Joseph was 19 when he "killed" Kars, Jotaro was 17 when he killed Dio, and Josuke was 16, but Josuke didn't kill Kira, what happened was Jotaro beat the crap out of Kira, and then an ambulance came and crushed his head.