Chapter Summaries

Xia Chen intimidated Buggy into apologizing and left him unharmed, while Tashigi fought Buggy until Smoker intervened. Buggy fled with his crew after mistakenly rallying them to attack Smoker.

• Xia Chen warned Buggy to leave, then scared him by revealing his strength and reminding him that Luffy was his captain.
• Alvida recognized Xia Chen as the Demon King, and Buggy slapped himself to persuade Xia Chen to forgive him.
• Xia Chen let Buggy go and vanished, leaving Buggy relieved until Tashigi arrived with Marine troops.
• Buggy attacked Tashigi, but Smoker stopped one of his knives with his smoke and appeared on the scene.
• Buggy's crew shouted that they would attack Smoker, so Buggy tried to save face before fleeing in his Buggy Chariot Form.

Smoker admitted that Demon King Xia Chen had defeated him and decided to leave Loguetown for the Grand Line. A few days later, the Going Merry reached Reverse Mountain, where Nami guided the crew into the powerful current leading toward the canal.

• The fleeing pirates abandoned Buggy, and Tashigi found Smoker collapsed after his fight with Demon King Xia Chen.
• Smoker thanked Dragon for helping him return to Loguetown, then ordered the Marines to prepare a ship so he could pursue Xia Chen into the Grand Line.
• Aboard the Going Merry, Zoro, Sanji, and Usopp angrily confronted Luffy after he had stretched them back onto the ship.
• As the crew approached Reverse Mountain, Xia Chen explained how its uphill current carried ships toward the Grand Line.
• When the Going Merry was caught in the strong current, Nami told the crew to let it carry them toward the canal.

The Going Merry approached the Red Line, and Xia Chen guided the crew through the canal while Luffy cushioned the ship against a gate. The ship regained its course and raced toward the mountaintop as Luffy celebrated their entry to the Grand Line.

• Luffy spotted the Red Line, and Nami realized the current was carrying the ship toward it with no way to steer.
• Xia Chen pointed out the canal in the Red Line and reassured Nami that the current was carrying them toward its entrance.
• Zoro marveled at seawater flowing uphill, then argued with Xia Chen over being called “Wuda” and was beaten by him.
• Nami warned that the Going Merry was off course and would hit a pillar, so Xia Chen persuaded Luffy to inflate himself and cushion the ship at the gate.
• Luffy absorbed the ship’s impact, sending the Going Merry back onto the correct course toward the mountaintop, and cheered for the Grand Line.

The Going Merry entered the Grand Line and was swallowed by the whale Laboon after Xia Chen tried to prevent a collision. Inside Laboon, the crew met lighthouse keeper Crocus, who questioned how Xia Chen knew the whale’s name.

• The Going Merry crossed the mountain into the Grand Line, where Xia Chen and Zoro heard a strange sound ahead.
• The crew discovered Laboon was an enormous Island Whale, and Xia Chen struck him with Rankyaku, causing Laboon to swallow the ship.
• The Going Merry landed on a painted sea inside Laboon, and the crew realized they were in the whale’s belly.
• Luffy mistook Crocus for a walking chrysanthemum, while Zoro and Sanji reacted warily to the lighthouse keeper.
• Crocus asked whether the crew planned to harm Laboon, and Xia Chen said they had been swallowed by accident.
• Crocus demanded to know how Xia Chen knew Laboon’s name, and Xia Chen began to explain.

Crocus treated Laboon’s distress and revealed his past as the doctor aboard Pirate King Roger’s ship, while Xia Chen’s knowledge continued to astound the crew. When Mr. 9 and Miss Wednesday arrived to attack Crocus, Xia Chen claimed he was the organization’s newly appointed Mr. 1, but Miss Wednesday challenged his story.

• Crocus showed the crew the exit and explained that he painted the pictures inside Laboon as a hobby.
• As Laboon rammed the Red Line, Crocus gave him a sedative, and Xia Chen revealed that he knew Laboon’s behavior and Crocus’s identity as Pirate King Roger’s doctor.
• Luffy refused Crocus’s offer to reveal what was in the One Piece and declared that he would find it himself and become Pirate King.
• Mr. 9 and Miss Wednesday attacked Crocus with a cannonball, but Xia Chen destroyed it with several tiny slashes.
• Xia Chen claimed he was the boss’s newly appointed Mr. 1, and Mr. 9 believed him, but Miss Wednesday called his claim a pretense and began explaining why.

Xia Chen used his speed and Conqueror’s Haki to convince Vivi and Mr. 9 that he was Mr. 1, then joined Luffy’s crew as they learned about Laboon’s fifty-year wait for his former companions. The crew heard that the companions had left the Grand Line without returning, and Xia Chen prepared to speak when he noticed a furtive figure nearby.

• Vivi accused Xia Chen of being too handsome to pass as Mr. 1, so Xia Chen appeared behind her and Mr. 9 to demonstrate his strength.
• Xia Chen ordered Vivi and Mr. 9 not to attack Laboon, then brought them aboard the Going Merry and told them to lead the crew toward Whiskey Peak.
• Xia Chen used Conqueror’s Haki to knock Vivi and Mr. 9 unconscious and told Crocus he had only been acting to fool them.
• Crocus explained that he had once sailed with Roger before returning to care for Laboon, and the crew learned Laboon had waited fifty years for his companions.
• Crocus said Laboon’s companions had escaped the Grand Line but never returned, and Xia Chen noticed a furtive figure as he was about to respond.

Xia Chen stopped Luffy from damaging the Going Merry and forced him to recognize the ship as a crewmate before letting him fight Laboon. After Luffy and Laboon made a promise to meet again, Xia Chen told Crocus that the Rumbar Pirates had all died, leaving Crocus stunned and asking why.

• Xia Chen beat Luffy after realizing he planned to pull out the Going Merry's mainmast to fight Laboon.
• Xia Chen confronted Luffy for treating the Merry carelessly, and Luffy admitted the ship was their crewmate and promised to take care of it.
• Luffy fought Laboon while Xia Chen and the others ate and watched, and the two promised to continue their battle after Luffy sailed around the Grand Line.
• Luffy joined the meal and firmly told Crocus he would keep his promise to Laboon unless he died.
• Xia Chen told Crocus that the Rumbar Pirates had all died, and Crocus asked him to explain.

Xia Chen told Crocus that the Rumbar Pirates had died at sea and that Brook had returned to life as a living skeleton, then explained how Log Poses guided ships through the Grand Line. After Crocus gave Nami a Log Pose, the crew chose the Whiskey Peak route because Xia Chen said it would be more interesting.

• Xia Chen used Conqueror's Haki to knock Mr. 9 and Vivi unconscious again before telling Crocus that the Rumbar Pirates had perished at sea.
• Xia Chen revealed that Brook had eaten the Revive-Revive Fruit and now lived as a skeleton, and Crocus thanked him for the news.
• Xia Chen explained Log Poses and the Grand Line's magnetic routes after Nami discovered her ordinary compass would not work.
• Crocus gave Nami a Log Pose and explained that all seven Grand Line routes eventually led to Laugh Tale.
• Xia Chen chose the Whiskey Peak route, and Luffy agreed because Xia Chen said it would be more interesting.

Xia Chen guided the Going Merry through the Grand Line, sliced an iceberg apart, and reached Whiskey Peak, where he received a Flying Nimbus from the system. As the crew was greeted by a suspiciously welcoming crowd, Xia Chen waited for events to unfold while keeping Vivi and Mr. 9 tied up.

• Crocus watched the Going Merry depart with Luffy and Laboon, recalling Roger and predicting that the world would grow less peaceful.
• Xia Chen ordered Vivi and Mr. 9 to shovel snow, then split a huge iceberg with a single flying slash.
• The crew arrived at Whiskey Peak, and Xia Chen received a Flying Nimbus capable of traveling at up to 100 kilometers per second.
• Xia Chen kept Vivi and Mr. 9 tied up and chose not to interfere as the crew sailed through the fog toward the island.
• A crowd welcomed the Going Merry at Whiskey Peak, and a middle-aged man with long, curly hair approached the crew.

The Straw Hats attended a feast in Whiskey Peak while Xia Chen, Zoro, and Nami pretended to pass out and uncovered the town’s plan to capture them. The chapter ended with Zoro confronting Mr. 8 and Xia Chen holding Mr. 9 and Miss Wednesday captive.

• Mr. 8 welcomed Luffy and the others to Whiskey Peak and invited them to a feast, which Luffy, Usopp, and Sanji eagerly accepted.
• At the tavern, Nami won a drinking contest while Xia Chen and Zoro pretended to collapse; after the townspeople left, all three revealed they had stayed alert.
• Nami went looking for treasure, and Xia Chen told Zoro to investigate while he prepared a present for the townspeople.
• Mr. 8 and Miss Sunday discussed capturing Luffy for his bounty and worried that Xia Chen might be the pirate with a 300-million-Beli bounty.
• Zoro confronted Mr. 8 and his group from the roof, while Xia Chen appeared behind them with Mr. 9 and Miss Wednesday bound.

Xia Chen protected Vivi inside his newly created golden barrier while Zoro fought the Baroque Works agents. Mr. 8 failed to reach or break the barrier, and Xia Chen challenged him to try again as Zoro finished off the other attackers.

• Xia Chen revealed that the town's people were Baroque Works agents and left them to Zoro.
• Mr. 8 charged at Xia Chen but crashed into the golden barrier, injuring his nose.
• Mr. 8 fired his hair-mounted shotguns, but redirected the bullets away from Vivi and toward Zoro, who used a nearby person as a shield.
• Mr. 8 repeatedly circled the barrier for over ten minutes, while Xia Chen kept moving Vivi in front of him and Zoro defeated the other agents.
• Xia Chen promised to sit still and release the captives if Mr. 8 could break the barrier, while privately doubting that he could.

Xia Chen left Zoro to handle the defeated Baroque Works agents, then found Nico Robin watching events in town and made her stay to watch with him. As Luffy and Zoro fought on a rooftop, Xia Chen sensed something and vanished.

• Xia Chen vanished after leaving the defeated Baroque Works agents to Zoro, while Vivi warned Igaram to flee and revealed his real name.
• Mr. 5 and Miss Valentine confronted Igaram and Princess Vivi, exposing their identities and preparing to attack them as Zoro watched.
• Xia Chen found Nico Robin on a nearby mountain and, after she admitted she was only looking around, used his aura to make her stay with him.
• Xia Chen and Robin watched Luffy and Zoro fight on a rooftop, where Zoro had the advantage, until Xia Chen sensed something and disappeared.

Xia Chen stopped Zoro and Luffy from fighting, agreed to train Luffy, and decided the crew needed to grow stronger for the dangers ahead. The next day, he took the group out of town to begin training while ordering Igaram to stay behind and assuring him Crocodile could not harm him.

• Xia Chen caught Zoro's slash with his black arm and broke up Zoro and Luffy's fight with a punch to each of them.
• After learning the cause of their argument, Luffy and Zoro made peace, and Xia Chen led them back to the others while correcting Zoro's wrong turn.
• Luffy asked Xia Chen to teach him to fight, and Xia Chen told him to come the next day.
• Xia Chen reflected that Zoro had learned the realm of cutting iron earlier than in the original story and resolved to strengthen Luffy and the others.
• The next day, Xia Chen refused Igaram's repeated requests to disguise himself as Princess Vivi and told him to stay in town, promising Crocodile could not harm him.
• Xia Chen took Luffy, Zoro, Usopp, and the others out of town for training, with Vivi, Igaram, Mr. 9, and Miss Sunday joining them.

Xia Chen demonstrated the Six Powers of the Navy and began teaching the crew about Haki. He explained Armament and Observation Haki, leaving Vivi and the others wondering whether Crocodile could withstand such power.

• Xia Chen demonstrated Soru, Geppo, Rankyaku, and Kami-e, and told Luffy, Zoro, and Sanji they could try learning them.
• Xia Chen explained the three types of Haki and demonstrated Armament Haki, which Zoro learned could protect his swords and help him fight Hawk-Eyes.
• Xia Chen explained Devil Fruits and how Armament Haki could let fighters touch Logia users, then described Observation Haki as a way to predict movements.
• Xia Chen closed his eyes and dodged Luffy's punch with a slight tilt of his head, astonishing Vivi and the others.

Xia Chen trained the Straw Hats by repeatedly beating them to force out their potential, hoping to help them develop Armament Haki. After three days of progress, the crew set sail for Little Garden while Xia Chen relaxed aboard the ship.

• Xia Chen invited Luffy, Zoro, Sanji, Nami, and Usopp to attack him, then quickly knocked all five down.
• Xia Chen asked Vivi and Mr. 9 to spar with Nami and Usopp, and urged both Straw Hats to grow stronger so they could protect themselves.
• Xia Chen motivated Usopp by reminding him that his father was on Red Hair's ship and asking whether he wanted his father to call him weak.
• Xia Chen spent three days fighting the crew, and Luffy, Zoro, Sanji, Nami, and Usopp all became stronger, though none had mastered Armament Haki.
• Xia Chen and the others left the island for Little Garden, and Xia Chen relaxed in a chair aboard the ship.

Xia Chen trained Luffy and the others in Observation Haki before the crew reached Little Garden, where his check-in reward raised his Armament Haki to intermediate. The system said he could master Ryuo through advanced Armament Haki or learn the technique himself, and Xia Chen chose to wait for the automatic breakthrough.

• Xia Chen had Vivi supervise Luffy, Usopp, and the others as they trained Observation Haki, then told Luffy to focus on sensing changes instead of simply taking hits.
• After several days at sea, Xia Chen and the crew arrived at Little Garden, where Nami and Usopp panicked at the sight of prehistoric beasts while Xia Chen prepared to explore.
• Xia Chen checked in on Little Garden and received intermediate Armament Haki, which he tested by coating his hand.
• Xia Chen asked the system about Ryuo and learned he could master it himself with intermediate Haki or receive it automatically after reaching advanced Armament Haki.
• Xia Chen decided not to attempt learning Ryuo on his own and planned to wait for his Armament Haki to advance.

Xia Chen hunted dinosaurs with Vivi on Little Garden and discovered a wax house made by Mr. 3. When the island’s volcano erupted and Dorry and Brogy began fighting, Xia Chen took Vivi on the Flying Nimbus to watch from above.

• Xia Chen cut up dinosaurs with Rankyaku and stored them in his System Space while Vivi watched.
• Xia Chen found Mr. 3’s empty wax house and shared Earl Grey tea with Vivi.
• Xia Chen and Vivi heard a tremor, then saw the volcano erupt and Dorry and Brogy resume their battle.
• Xia Chen sent the Flying Nimbus to carry Vivi to him, then flew with her above the giants’ fight.
• Xia Chen judged Dorry and Brogy’s strength and waited to see their combined attack, Hakikisha.

Xia Chen stopped Dorry from drinking Baroque Works’ tampered booze and tried to convince him he meant no harm. Dorry doubted Xia Chen’s identity despite seeing his 300-million-Beli wanted poster, so Xia Chen prepared to prove himself by fighting.

• Luffy found Xia Chen and Vivi on the Flying Nimbus and asked to ride it, but Xia Chen refused.
• Dorry offered the crew dinosaur meat and prepared to drink the barrels of booze Brogy had received from Usopp and Nami.
• Xia Chen kicked the barrels away and revealed that Baroque Works had tampered with the booze, but Dorry suspected he was plotting against him.
• Xia Chen showed Dorry his 300-million-Beli wanted poster, but Dorry insisted it depicted someone else.
• Xia Chen declared that he would fight Dorry and activated his Demonized Form.

Xia Chen transformed into his Demonized Form and faced Dorry, then challenged both Dorry and Brogy to a fight in exchange for wine. The two Elbaf warriors accepted, and Xia Chen began battling Dorry while Brogy prepared to join in.

• Xia Chen unleashed his Demonized Form, sending Vivi and Luffy flying and drawing the attention of Brogy, Nami, Usopp, Sanji, and Zoro.
• Xia Chen gave Dorry wine, and Dorry drank it after recognizing Xia Chen’s Conqueror’s Haki.
• Brogy arrived and found Dorry sharing wine with Xia Chen, who said he wanted to fight both Elbaf warriors.
• Xia Chen formally challenged Dorry and Brogy, and both warriors accepted in the name of their honor.
• Xia Chen attacked Dorry, forcing his sword downward until Brogy called out from behind him.

Xia Chen overwhelmed Dorry and Brogy, while Zoro and Sanji confronted Mr. 3 and Miss Goldenweek. Mr. 3 was defeated and Miss Goldenweek fainted, leaving Zoro and Sanji to argue over whose attack had done the damage.

• Xia Chen dodged Brogy’s axe, struck him with his club, and sent him flying hundreds of meters.
• Xia Chen appeared behind Dorry and knocked him away after warning him not to get distracted.
• Mr. 3 and Miss Goldenweek tried to sneak away, but Mr. 3 accidentally revealed his identity and his ties to Baroque Works and Crocodile.
• Mr. 3 tried to capture Zoro and Sanji with wax, but they dodged his attack and broke through his Candle Wall.
• Zoro and Sanji struck Mr. 3, sending him flying and leaving him motionless, while Miss Goldenweek fainted at the sight of Zoro.
• Zoro and Sanji argued over whose attack had defeated Mr. 3.