Oda
coincidentally made Kaido win against Oden with an extremely similar hostage situation. The biggest flaw in Oden's character was that he took everything onto himself and did it on his own.
What's to say Orochi (who's being kept alive for some reason) won't do the same with Momo, after he's exhausted stopping Onigashima, this time around?
What's to say Kaido, AFTER Luffy beats him down, won't try to finish off a distracted Luffy just like what happened with Oden?
But unlike that time with Oden, what's to say that the First Mate who stepped in to protect his captain last time around won't do it this time?
Coby's colour scheme is pink, same as Momo.
This was the first arc of One Piece after Luffy gained his strawhat from Shanks. Wano is the last arc before Luffy is heralded as a Great Pirate, an equal to Shanks and he is at a point where he can meet him.
I'm not saying ZKK will 100% happen but stop pretending like there aren't so much evidence, setup and clues in the story for ZKK.