Without haki you cannot damage Kaido, Kid literally said it about punches, in his intro in chapter 795 it was stated that neither blades or other stuff couldn´t kill him, Kaido HIMSELF state that blades couldn´t hurt him, the only way where ryu as he state it out.
If Zoro and Killer indeed cut Kaido, they use ryu but @Geo has a point with saying neither Zoro or Killer cut off Kaido.
In that case if they cut Kaido, they most like use both ryu.
Why using trunks as example when we literally having a Luffy who Kong Organ couldn´t even scatch Kaido? You wanna tell me Killer and Zoro Ap(without haki) >>>Kong Organ?
Like I said before Kaido himself state that blades couldn´t hurt him, only ryu can.
Holy shit, stop with this crap lmao, chapter already debunked this load of bullshit.
Kaido is not hax, he is a brute guy with hard skin but his skin hardness has a limit, once you have more "attack points" than his "defence points", you can hurt him.
Barrier Haki is only more AP, more Haki than normal Hardening:
His intro doesnt mean a shit lmao. That depends on who wields those swords/spear. Ofc a normal human can't pierce Kaido's skin with a cutting weapon while some powerhouse can, since there is a huge difference in AP.
Luffy would never make Kaido bleed like that since punches are blunt force, not cutting attacks. Ofc he can't make him bleed through his skin since he is not cutting his skin lmao. And Kaido used Haki against G4.
And making him bleed doesn't put them above Luffy since the damage of Luffy is greater but we can't see it since he is not cutting.
In your head which doesnt work properly I think or you dont understand at all these concepts maybe, I guess that a mosquito bite has more AP than a punch from a kid in your stomach. The mosquito can pierce through your skin and make you bleed while the kid's punch won't make you bleed. Which did more damage? The mosquito? xDDDDDDDDDDDDDD