About the Egghead Arc
As the aftermaths of both the Levely and the Raid on Onigashima, as well as the erasure of the Lulusia Kingdom, cause major shifts across the world, the Straw Hat Pirates arrive at the futuristic island Egghead where the super genius Dr. Vegapunk resides. Jewelry Bonney is intent on killing Vegapunk for what he did to Bartholomew Kuma, whose past and connection to Vegapunk are revealed. Meanwhile, a CP0 team is dispatched to assassinate Vegapunk, leading to a Marine siege that escalates into an incident that will shock the world.
After recovering from their dangerous descent down Wano's waterfall, Nami put Luffy in a cage to punish him. They then received the newspaper, learning of their new bounties and about the many massive events that had occurred during their time on Wano. They were horrified at the news of Cobra's death and Vivi's disappearance. Luffy immediately wanted to go and rescue Vivi, but Zoro talked him out of it, saying they should allow Vivi to take care of herself until it becomes clear she is in imminent danger. Luffy refused to believe that Sabo would kill Cobra, recalling the time he declared his dream to Sabo and Ace and thus revealing it to his crew for the first time. They reacted with a mixture of disbelief, wonder, and glee. Sanji laughed and said Luffy needed his brain examined. Usopp said that such a thing would be impossible, but Luffy replied that the Pirate King might be able to do it. Franky declared that they needed to find the last Road Poneglyph to help their captain become Pirate King and achieve the dream as soon as possible, but Robin added that it would not be easy, as its whereabouts had been unknown for a long period of time.
The Red Hair Pirates dropped Marco off back at Sphinx, and as he bid farewell to them, Marco recalled his farewell with the Straw Hats on Wano. Yamato had informed the crew of his decision not to join them, as he believed that Wano would need his protection for the time being from threats like Ryokugyu. Marco then arrived to tell the crew he was about to leave, and he, Luffy, and Jinbe reminisced about their first meeting in the Summit War of Marineford. Marco said Ace would have certainly been delighted to see Luffy's growth.
On Karai Bari Island, Crocodile and Mihawk confronted Buggy over why he was being advertised as the leader of Cross Guild, which in reality was created by the two of them. Some days ago, Crocodile contacted Mihawk as the now ex-Warlord was under attack by the Marines and proposed that the two of them team up to take on the Marines. Later, as Buggy was under attack by the Marines, Crocodile arrived at Karai Bari Island and ambushed the attacking fleet. Buggy's henchman believed that Crocodile was working for him, but in reality, Crocodile was after him to collect the money Buggy owed him. With no options left, Buggy offered to work as a servant for Crocodile's new company in order to pay off his debt. However, Buggy's subordinates put their captain front and center when creating a poster to spread word about the Cross Guild, and the World Government misinterpreted the poster as well as Crocodile's attack on the Marines to label Buggy as the company's leader and label him one of the Four Emperors. Because of the massive threat posed by Cross Guild, Crocodile's bounty was raised to 1,965,000,000, while Buggy's was raised to 3,189,000,000 and Mihawk's was raised to over 3,590,000,000. Although Crocodile was enraged by this development and proceeded to beat up Buggy in response, Mihawk stated that he had no desire to be an Emperor and that it might actually be advantageous for them if they were to keep Buggy as their figurehead leader, which Crocodile agreed to.