TLDR: Shanks let Ace die so Luffy would become Joy Boy due to prophecy. Kaido wanted to save Ace and have Ace marry Yamato/rule Wano, but Shanks stopped him. Luffy and Yamato will be furious when the found out Shanks' betrayed Ace/Roger. Luffy vs Shanks over Ace's death.
Kaido is Best Boi, Shanks is evil Celestial Dragon Shitlord /s
-Kaido's entire crew is card themed, and the only missing major card is the "Ace".
-Kaido was stopped from going to Marineford by Shanks
-Shanks wants Luffy to become King of the Pirates, hence why he gave Luffy his hat
-Shanks is close with the Fish-Men, and visited Shyarly to predict the future
-Shanks realized from this prediction that Luffy would become King of the Pirates
-Shanks knew that if Kaido joined forces with Whitebeard, Ace would be saved
-Kaido would have welcomed Ace as a brother, having wanting to find the new Joy Boy. Kaido's quote to Luffy after Luffy fell into the ocean: "So, you couldn't be Joy Boy, either." This quote is referencing Kaido, Ace, and Luffy all as failed attempts at people becoming Joy Boy
-Kaido wanted Ace to take over his crew (Kaido respected Roger's strength), and to marry Yamato to rule Wano alongside her, with Yamato as Shogun and Ace as Pirate King
-Kaido would have offered Ace this deal: "If you agree to marry my daughter Yamato, I will free Wano and let your friend, Tama, eat as much as she wants."
-Beast Pirate + Whitebeard Pirate Alliance = Good fucking bye WG. Kaido takes over and protects Newgate's territories, while training Ace and Yamato. WG loses in a war of attrition. Luffy never becomes Pirate King because Ace surpasses him.
-The Dawn never comes, because Ace became Pirate King, not Luffy, and Shanks' true family, the Celestial Dragons, are publicly executed for their crimes against humanity.
-Shanks, like Dragon, wants to destroy the Celestial Dragons rule, not murder them. Shanks wants to overcome the cycle of revenge/violence, and unite the WG with Pirate forces to make the world One Piece.
-Knowing all of this, Shanks stopped Kaido from saving Ace and allying with the Whitebeard Pirates.
-Luffy and Yamato have no idea that Kaido wanted to save Ace, while Shanks left his Captain's son to die to fulfill Toki's prophecy/the prophecy of Luffy becoming the King of the Pirates/Joy Boy.
-Luffy and Yamato will find out that Kaido tried to save Ace, and Shanks stopped him
-Luffy will actually want to fight and fuck up Shanks. Shanks will play the villain, and state that Ace was a member of a rival crew, so he had no reason to save him.
-Luffy vs Shanks
Kaido is Best Boi, Shanks is evil Celestial Dragon Shitlord /s
***
-Kaido's entire crew is card themed, and the only missing major card is the "Ace".
-Kaido was stopped from going to Marineford by Shanks
-Shanks wants Luffy to become King of the Pirates, hence why he gave Luffy his hat
-Shanks is close with the Fish-Men, and visited Shyarly to predict the future
-Shanks realized from this prediction that Luffy would become King of the Pirates
-Shanks knew that if Kaido joined forces with Whitebeard, Ace would be saved
-Kaido would have welcomed Ace as a brother, having wanting to find the new Joy Boy. Kaido's quote to Luffy after Luffy fell into the ocean: "So, you couldn't be Joy Boy, either." This quote is referencing Kaido, Ace, and Luffy all as failed attempts at people becoming Joy Boy
-Kaido wanted Ace to take over his crew (Kaido respected Roger's strength), and to marry Yamato to rule Wano alongside her, with Yamato as Shogun and Ace as Pirate King
-Kaido would have offered Ace this deal: "If you agree to marry my daughter Yamato, I will free Wano and let your friend, Tama, eat as much as she wants."
-Beast Pirate + Whitebeard Pirate Alliance = Good fucking bye WG. Kaido takes over and protects Newgate's territories, while training Ace and Yamato. WG loses in a war of attrition. Luffy never becomes Pirate King because Ace surpasses him.
-The Dawn never comes, because Ace became Pirate King, not Luffy, and Shanks' true family, the Celestial Dragons, are publicly executed for their crimes against humanity.
-Shanks, like Dragon, wants to destroy the Celestial Dragons rule, not murder them. Shanks wants to overcome the cycle of revenge/violence, and unite the WG with Pirate forces to make the world One Piece.
-Knowing all of this, Shanks stopped Kaido from saving Ace and allying with the Whitebeard Pirates.
-Luffy and Yamato have no idea that Kaido wanted to save Ace, while Shanks left his Captain's son to die to fulfill Toki's prophecy/the prophecy of Luffy becoming the King of the Pirates/Joy Boy.
-Luffy and Yamato will find out that Kaido tried to save Ace, and Shanks stopped him
-Luffy will actually want to fight and fuck up Shanks. Shanks will play the villain, and state that Ace was a member of a rival crew, so he had no reason to save him.
-Luffy vs Shanks