Many One Piece readers joke among themselves that the dark king Rayleigh is Luffy’s theory teacher while the Straw Hat captain’s practical teacher is none other than Kaido.
Going back to the first encounter of these two characters, at that time the rubber-brained boy first arrived in Wano.
After being drunk for a while, Kaido only needed one hammer in human form to make Luffy’s eyes go white.
Different from his fierce appearance, Kaido, through the incident of Luffy and before that Kid, always wants to recruit more young pirates with enough strength to increase the position of the Hundred Beasts Pirates.
This continued to be shown in the second confrontation, even when realizing that Luffy had developed a great strength compared to the first encounter, Kaido was still not really determined to take the captain’s life.
However, instead of destroying the Straw Hat captain, Kaido sent Luffy flying into the sea.
In the third confrontation, now with his mastery of Conqueror’s Haki combined with attacks, Luffy proved not to be inferior and had a fair solo fight with the captain of the Hundred Beasts gang.
This time, the Straw Hat captain was like the first time, lying unconscious, but Kaido still did not check to see if Luffy was dead or not and really wanted to take the main character’s life.
Kaido himself is aware that even though Luffy is a very young pirate, his strength has increased dramatically.
Does this come from whether Kaido really values Luffy or is he still subjectively thinking that the captain of the Straw Hats is not his opponent?
With the final details of One Piece chapter 1043, when the giant elephant Zunesha hears the drumbeat of freedom and Joy Boy is about to appear, it is likely that that person will be Luffy.