I did not expect Santoryuu to momentarily block Hakai. I did not expect Asura to scar Kaido even with 30+ bones broken.
This is by far one of the most surprising things so far. I never, ever expected Oda to have Zoro master CoC coating just
20 chapters after Luffy learns it. I expected Zoro to have a subconscious usage of CoC coating, like at the end where he was assisting Luffy in Kaido's defeat (whether by aiding or killing, it's w/e), a one-time thing caused out of desperation, and to be mastered in the coming arc.
But boy oh boy, Oda said fuck that and pulled this.
@nik87 was right, I guess. Just take your expectations and shove them into skies as far as Zoro is concerned this arc, because Oda's been gifting shit after shit and it's been that way since the very start of it.