Kaido wields a giant metal kanabō covered in spikes as his weapon of choice. Using it in conjunction with his immense physical strength, he was able to knock Luffy unconscious with a single blow, breaking past the immense defensive power of Luffy’s Busoshoku Haki-enhanced Gear Fourth form.
There is a theory about seastone in Kaido’s club, which is very likely, but I’m not here to talk about it. It seems like Kaido’s club is something special. So powerful that even his subordinates talk about it.
When Kaido first appeared, he didn’t seem to have any weapon or his club with him.
Even after he shrinked there was no sign of his club.
After Luffy hit him with his King Organ and made Kaido fall, Kaido stood up with his club in his hand out of nowhere.
Also in the photos you can clearly see, after Kaido shrinks to his human form, Oda draws Kaido carefully, hiding his right arm and not showing it until he stands up with his club in his hand.
He didn’t had his club in his dragon form but had it in his right arm after he shrinked and transformed to his human form??
This reminded me of when Big Mom and Prometheus got harmonized and in simple words became one.
I also remembered when Big Mom told Kaido that he is hugely indebted to her. What could this huge debt be?? Something that Kaido couldn’t repay, something not about money or territory or this simple stuff that Kaido could have repayed any time.
Basically my theory is that when Kaido and Linlin where getting along in their old days, Kaido asked her to make his club a Homie or create a Homie with club shape for him out of his soul and Big Mom did it as a huge favor.
It could all make sense why Kaido’s club is always near him and how it appeared near him after he shrinked and why the subordinates reacted to his club as something special.
Probably Kaido has learned how to harmonize his club with his dragon form just like Big Mom.
Or the better theory is that his club is made from his dragon form so when shrinks to his human form his club appears.
This will also help the Plot, how? In an old interview Oda said he is not sure how luffy can beat kaido and he just showed us their power level differences. Luffy can never defeat Kaido with just 2 weeks of training.
Why not instead of just making Luffy crazy strong, make Kaido a little weaker?! Let me explain.
If his club is a Homie, then part of Kaido’s soul is in that club, by destroying it Kaido will definitely become weaker. His life force will be reduced and his haki will also be reduced.
Now I see why Oda went extra miles with Whole Cake Island and introducing Big Mom when he could have kept them mysterious. And not just introducing them, he is also bringing them to Wano.
If Big Mom made Kaido’s club into a Homie, she will give Straw Hats this information and help them defeat Kaido by destroying the club. She hates the Straw Hats but this would be a good opportunity to get rig of Kaido, she might think that afterwards she can get rid of Straw Hats too.
Luffy can’t get Kaido’s strength in just two weeks so instead Oda makes Kaido weaker and this is how Luffy can match him and defeat him.
*Theory by strawhatkatakuri