Eustace Kidd and Kira were both born in the South China Sea, and they are not brothers, but they are more like brothers. I was a very good friend when I was a child, and now I am as good as ever. The two liked a girl at the same time, called Shirton Drujanaka, the three of them had gone to eat curry udon together, but after eating the curry soup on their bodies, the two laughed, and then the two were beaten by the girl and then thrown away, curry udon became a painful memory of the two, so both hated curry udon.
Some people compare the three captains of supernova to three legends from the old era: Luffy → Roger; → Whitebeard; Kidd → Golden Lion. I used to think that this analogy was very correct, but as the plot slowly progressed, and I gradually understood the role of "Captain" Eustace Kidd, I found that Kidd was different from the Golden Lion, Kidd knew more about friendship than the Golden Lion, and understood the beautiful feelings between partners, not just the grand ambition.
When the Four Emperors Kaido raided Kidd's alliance with Hawkins and Arp, the Kidd Pirates would rather die. Kidd is imprisoned by Kaido in Rabbit Prison, and his partner is instructed by the Great Snake to do this and that in order to save Kidd, Kira eats the Smile Fruit and transforms into Kamakura to do things for the Great Snake. Will they be able to save Kidd by doing so? If they don't do it, there is no hope at all, they don't want their partner to have trouble, they don't want their captain to have trouble. If the partners didn't have such a deep friendship, Kira wouldn't be able to do these things.
Unfortunately, Kira eats the fruit of the failed smile, and from then on there is only one expression on his face. Kira used to be ridiculed for his particularly eerie laughter, killing all the people who laughed at him, wearing masks, and rarely speaking. And now he only has this kind of expression, which is really a great mockery.
Kamazō (Kira) is imprisoned in Rabbit Prison because he does not have the task assigned by the general Snake, and on the way he meets Kidd who has escaped from prison, and Kidd runs to Kira in handcuffs, because he knows that it is his partner, and he cannot ignore it, even if he has no strength to resist, even if he has no possibility of victory. Brothers can treat each other like this, and it is no longer worth it.
After kidd the pirates still choose to hit Kaido, in order to make Kira no longer feel inferior to his own laughter, Kidd and they learn Kira's laughter (hair hair!). Partners can treat each other in this way sincerely, and the Golden Lion Pirate Regiment is not as good as the Kidd Pirate Regiment.
In the Battle of Ghost Island, Hawkins has Kidd's Scarecrow in his hand, and if he hurts Hawkins, it hurts Kidd, in other words, Kidd's life is in Hawkins' hands. At this time, Kidd is fighting with the Four Emperors' Aunts, and if he makes a mistake, he will be beaten to death by the Great Aunt. Kira begs Hawkins not to hurt Kidd and is willing to trade his life for Kidd's. It's like when Sauron begged Big Bear to take his life in exchange for Luffy's life. If there is no one in this world who is willing to die, how boring it is to live!
Finally, since Kidd didn't have a left arm, Kira cut off Hawkins' left arm and pulled out the scarecrow, and Kidd's risk was lifted. Kira defeats Hawkins with a single move, Blade Strike.
Come on, man!!!