Cool, there's a chance Jobin couldn't be the main antagonist because he didn't kill his father, on the other hand Josuke and Jobin haven't an actual reason for fight each other, because... you know... They both are technically allied to the Higashikata family, only Jobin want to kill Josuke and...
I think Norisuke isn't dead yet, Jobin might have only knocked him out just like he did to Yasuho. By the way, Can somebody explain to me why Jobin is behaving like a bitch? Yasuho isn't getting in his way, neither is Josuke...Even he is tecnically a Higashikata as well...(Rai is just being paid...