Arc 4The Unbeatable King
Arthur defeated Kaido, Mihawk, Doflamingo, and Jack while drawing Hancock into his crew and forging alliances with Doflamingo. As the Emperors’ War reshaped the world, Arthur strengthened his swordsmanship and prepared to face Golden Lion Shiki as part of his plan to make the world believe he was unbeatable.
- Arthur fought Kaido for a day and a night, unleashed a vast storm of lightning, and recovered after the system declared him victorious.
- Boa Hancock tested Arthur, learned he wielded the Rumble-Rumble Fruit, and joined the Don Stallion after he rejected her proposal and offered friendship.
- Arthur defeated Kage'er Bojie, then met Shanks and Mihawk and won their duel by cutting Mihawk with Excalibur.
- Arthur challenged Doflamingo, defeated him, and spared him in exchange for help locating Zou and protecting Dressrosa from Kaido.
- Arthur killed Jack, prompting Doflamingo to blame the Whitebeard Pirates and Kaido to declare war on Whitebeard.
- The Emperors’ War broke out at Gos Heights, while Arthur asked Doflamingo to help him create the greatest war in the world.
- Arthur spent a year strengthening his swordsmanship and refined his plan to make the world believe he was unbeatable.
- Golden Lion Shiki’s floating islands appeared above the Don Stallion, and Arthur prepared Nami to record their coming battle.