With one brother gone, Luffy remembers the other and sends his crew a message.
The war is over, and the story stops to count the cost. Law’s submarine carries Luffy to Amazon Lily, where Hancock hides him while he recovers from wounds that Law has only begun to treat. The world reads about Whitebeard’s death and Blackbeard’s rise; Marines and pirates alike begin repositioning for an age that has no obvious structure. Nobody yet knows what the Straw Hat crew, scattered across the world, intends to do.
Luffy’s grief is answered by a memory the story has withheld until now: the childhood he spent with Ace and a third boy, Sabo, in the hills above Foosha Village. The flashback explains what Ace meant when he thanked his brother for loving him, and it introduces the promise the three of them made with sake cups in a bandit hideout. When Luffy wakes, it is Jinbe who forces him to name what he still has. Rayleigh arrives with an offer, and the crew, reading the news in nine separate places, understands a message meant only for them.
Story
What was lost, and who is left Ch. 581–582
Blackbeard leaves Marineford declaring his intentions to the world, and the Marines who held the island begin to understand that the pirates they defeated have been replaced by a worse one. Coby weeps over the plaza, Shanks arranges to bury Ace and Whitebeard, and Sengoku confronts a Government that regards the day as a victory. Law surfaces near Amazon Lily and stabilizes Luffy in his submarine while the Kuja, wary of pirates, permit an exception for the sake of their empress.
When Luffy regains consciousness, he does not accept what has happened. He tears through the forest, throwing himself against trees and rocks, until Jinbe restrains him bodily and refuses to let him hurt himself further. Luffy insists he is too weak to protect anyone. Jinbe does not disagree. The confrontation is interrupted by a memory of a night ten years earlier, and the story follows it back to the hills where Luffy learned what a brother was.
Mount Colubo and the boys of Gray Terminal Ch. 582–585
Garp leaves a seven-year-old Luffy with the mountain bandit Curly Dadan, who is already reluctantly raising ten-year-old Ace. Ace wants nothing to do with him. Luffy follows anyway, into the forest and down to Gray Terminal, the heap of refuse outside the walls of the Goa Kingdom where Ace and a boy named Sabo have been stealing and hiding treasure. Luffy is caught by the Bluejam Pirates and beaten by Porchemy for the treasure’s location, and he refuses to give it up even when he is told it will kill him.
Ace and Sabo rescue him, and Ace, who has never met anyone who would keep faith with him under pain, finds he cannot dismiss the boy who did. The three build a hideout in a tree and share cups of stolen sake, declaring themselves brothers in a ceremony that none of them regards as a game. Ace confides the question that has shaped him: whether he deserved to be born at all, as the son of a man the world despises. Luffy’s answer is simply that he is glad Ace exists.
A noble’s son and a fire set for a guest Ch. 586–587
Sabo is not an orphan. He is the runaway son of a noble family in High Town, and when the three boys are caught by Bluejam’s men, his father arrives to reclaim him and Sabo goes quietly to keep the other two alive. Inside the walls he is fitted for a life he despises: a tutor, a new brother adopted to replace him, a father who tells him the people outside the wall are not people. Ace and Luffy, meanwhile, are hired by Bluejam to carry crates into Gray Terminal and do not know what the crates hold.
The Goa Kingdom is preparing for a visit from a Celestial Dragon, and the nobles have decided the guest must not see the refuse heap or anyone who lives on it. Bluejam has been paid to burn it all. The fire takes the terminal in a night. Ace and Luffy are caught inside it by a pirate who has just learned he was never meant to be paid, and only Dadan, who has come looking for the boys she claims to hate, gets them through the flames alive. Sabo watches from behind the walls and understands what his own class has done.
A boat on the horizon Ch. 588–589
Sabo steals a fishing boat, raises a pirate flag he has sewn himself, and sails out of the harbor the same morning the Celestial Dragon’s ship arrives. The noble shoots the boat out of the water for the offense of crossing his path, and the kingdom’s celebration continues. Luffy and Ace are told that Sabo is dead. Dragon, present in Goa that night to see the fire, is seen carrying something away from the harbor, and the story leaves Sabo’s fate exactly as the boys are told it.
The grief drives Ace to promise that he will never again let a brother die in front of him, and the two boys spend the next years training on the mountain with the third cup on the shelf. Ace sails at seventeen, and Luffy stands on the cliff to watch him go. Three years later Luffy sails himself, on the day the story began, carrying his brother’s cup and a hat that belongs to someone else.
Rayleigh’s offer and a message rung out loud Ch. 590–594
Dadan beats Garp for letting Ace die while Foosha Village grieves in its own way. On Amazon Lily, Jinbe asks the question that ends Luffy’s collapse: does he still have anything? Luffy counts his crew, one at a time, and finds that the answer is eight people who are alive. Rayleigh arrives, having swum the Calm Belt, and offers to teach him Haki. Luffy has spent the arc learning that his strength was not enough; Rayleigh proposes two years in which to change that.
Before agreeing, Luffy needs a way to tell his crew. With Rayleigh and Jinbe he returns to the ruins of Marineford, rings the Ox Bell sixteen times, and lays flowers at the plaza before Marine pursuit forces them out. The photograph that reaches the papers shows a tattoo on his arm: 3D2Y, the first part struck through. Every crew member knows that the original plan was three days on Sabaody. None of them needs the message explained.
Nine places to grow stronger Ch. 595–597
Kuma’s destinations turn out to have been gifts. Zoro was sent to Mihawk’s ruined island and asks the greatest swordsman to teach him. Nami is on a sky island of weather scientists, Usopp on an archipelago of carnivorous plants with a hermit who calls himself a hero, Sanji on the island of Ivankov’s followers, where he is chased for two years and learns their techniques as the price of leaving. Chopper is among giant birds who teach him medicine, and Franky has found Vegapunk’s abandoned laboratory.
Robin, freed from a labor camp by the Revolutionary Army, accepts Dragon’s invitation to learn from them. Brook, captured by a tribe of long-armed people, is turned into a touring musical act and becomes the Soul King while planning his escape. Each of them chooses to stay where they landed rather than rush back. Luffy, delivered by Rayleigh to Rusukaina, an island with forty-eight seasons and predators the size of ships, begins learning the three forms of Haki. The crew has never been more separated, and never more united in purpose.
Legacy
The flashback supplies the story’s account of what Luffy owes Ace, and Sabo’s unconfirmed death leaves a debt that Dressrosa repays. The sake cups reappear as a motif whenever the manga wants to speak about chosen family.
The two-year gap divides the manga in half. Every crew member returns with a specific mentor, a specific discipline, and a specific debt, and Luffy’s Haki training with Rayleigh becomes the foundation for everything he does in the New World.