The biggest development as so far Luffy hasn't landed proper hit.
so Ashura did weaken Kaido to the point where Onigashima is in trouble.
Imagine that an attack that makes you drop buckets and buckets of blood, permanently changes your body, makes you huff puff and shiver, makes you drop tons of internal blood ACTUALLY weakens you.
What a concept guys..Real rocket science.
Zoro totally didn't do anything to Kaido.
Yall Luffy fans thank Zoro for the fact that he can even hang with Kaido now is because Zoro took him to that state