Chapter Summaries

Lin Yu and his crew arrived at Fish-Man Island, where Hina rescued a mermaid child from a pirate. At the Mermaid Cafe, Lin Yu noticed Kaimi before Koala and Haku arrived.

• Lin Yu drove off a Giant Sea King with his overwhelming aura as the God Slave descended toward Fish-Man Island.
• Hina used her Navy identification to get the crew through the island's inspection, and Smoothie and Ulti stayed behind to guard the ship.
• Hina killed a pirate who had kidnapped a little mermaid named Nami, then gave the girl Perona's plush toy.
• Lin Yu led the others to Madame Shyarly's Mermaid Cafe, hoping to find mermaids suitable for recruitment, and spotted Kaimi among the waitresses.
• Koala and Haku entered the Mermaid Cafe.

Koala arrived at Madame Shyarly’s café seeking a prophecy about the Revolutionary Army’s future with Lin Yu, while Lin Yu considered how to gain influence on Fish-Man Island. Madame Shyarly confirmed that Lin Yu had arrived, and Neptune agreed to let her approach him under the guise of testing his intentions.

• Koala told Haku that she wanted Madame Shyarly to divine the Revolutionary Army’s relationship with Lin Yu, whose actions had divided Sabo and the organization.
• Koala learned that Madame Shyarly was away and waited at the café, where Lin Yu recognized her but decided to focus first on winning over Shirahoshi and Fish-Man Island.
• Lin Yu remembered Vander Decken IX and began considering how he might use him to build a relationship with Fish-Man Island.
• Madame Shyarly divined that Lin Yu had arrived and that his presence would bring major changes to the island, though she could not tell whether they would be good or bad.
• Neptune learned that Lin Yu was at Madame Shyarly’s café with Navy Rear Admiral Christina and heard that Lin Yu’s group had rescued a little mermaid.
• Madame Shyarly proposed approaching Lin Yu in disguise to test him, and Neptune allowed her to proceed.

Madame Shyarly learned Lin Yu’s identity and confronted him at the Fish-Man Café, where he said he had come to recruit her. She agreed to join his Pirate Crew to protect Fish-Man Island.

• Madame Shyarly returned to her café after Neptune agreed to her plan to investigate Lin Yu and his group.
• Madame Shyarly refused Koala’s request to get involved with the Revolutionary Army, then went to the surveillance room to watch Lin Yu.
• Lin Yu confronted Madame Shyarly, explained that he had noticed her watching him, and forced her to follow him to her room.
• Madame Shyarly told Lin Yu that Koala’s divination had revealed his identity, then asked why he had come to Fish-Man Island.
• Lin Yu said he had come for Madame Shyarly and would spare Fish-Man Island if she followed him; she agreed to join his Pirate Crew.

After Madame Shyarly joined, Lin Yu’s Pirate Crew upgraded to Level Five, gaining more crew positions, a ship slot, and the Ability Points system. He pressured Shyarly into persuading Kaimi and Ishili to join, then revealed he had never planned to harm Fish-Man Island.

• Madame Shyarly agreed to join Lin Yu’s Pirate Crew, triggering its upgrade to Level Five and unlocking new crew positions, a ship slot, and Ability Points.
• Lin Yu studied the upgrade requirements and considered recruiting Noah’s Ark as his newly available ship.
• Lin Yu learned that Ability Points could awaken Devil Fruit abilities or raise crew members’ skills and Haki through spending points earned from training.
• Lin Yu demanded that Madame Shyarly persuade Kaimi and Ishili to join him, threatening to take ten other mermaids if she refused.
• Madame Shyarly brought Kaimi and Ishili to Lin Yu, and they agreed to follow him to protect Fish-Man Island.
• Lin Yu told the stunned mermaids that he had never intended to harm Fish-Man Island.

Lin Yu forced Madame Shyarly, Kaimi, and Ishili to board his ship, then offered them Devil Fruits as a chance to grow stronger and protect Fish-Man Island. After Shyarly ate the Straw Man Fruit and Lin Yu teased Kaimi and Ishili with two more fruits, he returned with them to the God Slave, where Koala and Haku were tied to the mast.

• Lin Yu told Shyarly that he had not intended to attack Fish-Man Island, but insisted that she, Kaimi, and Ishili had to board his ship.
• Lin Yu offered the three mermaids a chance to grow stronger and fed Shyarly the Straw Man Fruit, despite her disgust at its taste.
• Lin Yu offered Devil Fruits to Kaimi and Ishili if they performed well over the next few days, and Ishili eagerly tried to curry favor with him.
• After Nami and Robin told Lin Yu that Koala had been captured and brought aboard, he took the three mermaids through the Different Dimension back to the God Slave.
• Lin Yu and the mermaids arrived on deck and saw Koala and Haku tied to the mast.

Lin Yu captured Koala and Haku, then questioned Koala about whether the Revolutionary Army served its cause or Monkey D. Doragon’s faction. Koala struggled to reconcile the Revolutionary Army’s ideals with its ties to Straw Hat Luffy and Sabo, leaving her uncertain about Lin Yu’s offer and the organization’s future.

• Lin Yu ordered Anna and Charloss to lock Koala and Haku up separately, and Robin explained to Madame Shyarly, Kaimi, and Ishili that Hina was with Lin Yu because she was his woman.
• Lin Yu left Robin to clarify his intentions to the others and went to Koala’s cell, where he revealed his identity as God Slayer Lin Yu.
• Lin Yu explained Koala’s and Haku’s positions in the Revolutionary Army and offered to release Haku and grant Koala one condition if she did something for him.
• Lin Yu said he might treat the Revolutionary Army as an enemy because of its connection to Straw Hat Luffy, then asked Koala whether the organization belonged to itself, Monkey D. Doragon, or Doragon’s faction.
• Koala considered whether the Revolutionary Army should oppose Lin Yu for Luffy’s sake and became confused about how that choice fit the organization’s ideals.

Lin Yu manipulated Koala into considering cooperation with him by claiming he opposed both the Celestial Dragons and pirates. He asked her to help suppress unrest on Fish-Man Island, then planned to use Madame Shyarly to provoke Hody Jones into revolt against King Neptune.

• Lin Yu exposed Koala’s concern that Doragon and Sabo would side with Luffy, then told her the Revolutionary Army was not hers to control.
• Lin Yu said he killed pirates as well as Celestial Dragons because he considered both evil, impressing Koala and Whitey Bay.
• Koala asked Lin Yu to believe that the Revolutionary Army was not anyone’s private army, and he offered to consider cooperation if she helped resolve unrest on Fish-Man Island.
• Lin Yu left after Koala asked about Whitey Bay, explaining that she was a former Whitebeard pirate who had lost a bet.
• Lin Yu planned to have Madame Shyarly infiltrate the Fish-Man District and incite Hody Jones to revolt, then have Koala approach Hody under the pretense of an alliance.

Lin Yu told Madame Shyarly that Hody Jones murdered Queen Otohime and was preparing a rebellion, then recruited her to infiltrate the Fish-Man District. Shyarly agreed to help, and Lin Yu stayed behind with her aboard the ship.

• Lin Yu summoned Madame Shyarly and asked her to use her divination to verify his claim about Hody Jones.
• Madame Shyarly's tarot readings confirmed Lin Yu was telling the truth about Hody Jones murdering Queen Otohime.
• Lin Yu explained that Hody Jones was secretly gathering soldiers and that Princess Shirahoshi had kept the truth hidden at her mother's request.
• Lin Yu asked Madame Shyarly to infiltrate the Fish-Man District and persuade Hody Jones to rebel so he could remove the threat.
• Madame Shyarly agreed, and Lin Yu told her there was no rush because he would remain on Fish-Man Island for a while.
• Lin Yu enlarged his body, startling Madame Shyarly, and she realized what he intended.

Lin Yu visited Princess Shirahoshi in Shell Tower, then took her out to explore Fish-Man Island despite the danger from Vander Decken IX. When Vander Decken attacked, Lin Yu protected Shirahoshi with a wall of lightning.

• Madame Shyarly confirmed with Princess Shirahoshi that she knew the truth about Queen Otohime's murder and decided to work with Lin Yu against Hody Jones.
• Lin Yu entered Shell Tower through an Air Door and told Shirahoshi he had learned the truth from her, then invited her to go outside.
• Shirahoshi agreed to visit the Sea Forest, and Lin Yu took her through his Different Dimension to Gyoncorde Plaza while sending Megalodon ahead.
• Lin Yu shielded Shirahoshi from a rose-decorated axe, and Vander Decken IX arrived on a spear and declared his love for her.
• Lin Yu formed a lightning barrier, and Vander Decken IX plunged into it as Shirahoshi and the crowd watched.

Lin Yu killed Vander Decken IX, helped Shirahoshi enjoy a visit to the Sea Forest, and secretly prepared King Neptune for Hody Jones’s rebellion. When Hody Jones led his forces to seize Shirahoshi, Lin Yu and his allies confronted them, and Lin Yu’s Conqueror’s Haki knocked out half the rebel army.

• Lin Yu killed Vander Decken IX with lightning, concealed his death from Shirahoshi, and took her to the Sea Forest, where Robin searched for a Poneglyph and learned Shirahoshi was Poseidon.
• Lin Yu and his companions stayed at Dragon Palace City, while Madame Shyarly, Koala, and Haku helped Hody Jones build support for a rebellion without revealing their plans to him.
• After Lin Yu left Fish-Man Island, Hody Jones marched with one hundred thousand troops toward the Sea Forest to capture Shirahoshi, while King Neptune’s forces prepared for the attack on Lin Yu’s warning.
• Lin Yu appeared with Shirahoshi, King Neptune, and his allies, then used Conqueror’s Haki to knock out around fifty thousand of Hody Jones’s troops.
• Hody Jones rallied his remaining forces, insisting they still had fifty thousand men.

Lin Yu and his crew defeated Hody Jones’s rebellion, then began strengthening and secretly positioning themselves to control Fish-Man Island. Shirahoshi joined Lin Yu’s crew while remaining on the island, and her information panel revealed that she was the not-fully-awakened Sea King Poseidon.

• Lin Yu used Conqueror’s Haki to knock out tens of thousands of Hody Jones’s troops, while Ulti, Smoothie, Nami, and the others killed Hody Jones and his officers and wiped out the remaining rebels.
• Neptune welcomed Lin Yu and his crew to Dragon Palace City and agreed to Lin Yu’s plan to strengthen Fish-Man Island’s defenses.
• Lin Yu planned to control Fish-Man Island as a passage for pirates and merchant ships, while Shirahoshi’s brothers began learning Haki from Kikyo.
• Lin Yu asked Shirahoshi to join his crew, promised to visit whenever she wanted, and Shirahoshi accepted.
• Lin Yu opened Shirahoshi’s information panel and discovered that she possessed the not-fully-awakened Sea King Poseidon talent.

Lin Yu gave Shirahoshi the Mythical Zoan Nine-Tailed Fox Fruit, allowing her to transform into a human girl and explore the world at an ordinary size. After they spent several happy days together, King Neptune presented Lin Yu with Noah's Ark to show his determination to follow him.

• Lin Yu offered Shirahoshi a Devil Fruit and a diving Battle Suit that let her avoid seawater while swimming.
• Lin Yu persuaded Shirahoshi to eat the fruit by reminding her of Queen Otohime's wish and her desire to protect her family.
• Shirahoshi ate the Nine-Tailed Fox Fruit and transformed from her giant mermaid form into a human girl.
• Lin Yu took Shirahoshi to the amusement park, and they spent the following days eating, strolling, and playing together.
• King Neptune learned that Lin Yu had given Shirahoshi a Mythical Zoan and presented him with Noah's Ark.

Lin Yu bound Noah’s Ark and discovered that Shirahoshi could command the Giant Sea Kings that pulled it. He began training Shirahoshi to awaken her abilities, and two months later Ulti challenged the imprisoned Jozu after her strength had grown.

• Lin Yu bound Noah’s Ark and made it move by controlling its chains, while Robin suggested to Neptune that Lin Yu might be the Joy Boy they awaited.
• Giant Sea Kings appeared and said Lin Yu was not the one they were waiting for, but Shirahoshi commanded them to take Noah’s Ark to the Sea Forest.
• Lin Yu encouraged Shirahoshi to communicate with the Sea Kings, then had her train with God Slave and study Fish-Man Karate under Koala.
• Two months later, Ulti brought Lin Yu and Smoothie before the imprisoned Jozu and declared that she could defeat him.

Ulti defeated Diamond Jozu after a five-hour battle, and Lin Yu claimed Jozu’s Glitter Fruit while Neptune arranged his burial on Fish-Man Island. After Ulti recovered, she and Lin Yu became intimate, and her favorability reached 100.

• Lin Yu released Diamond Jozu, who charged at Beast Form Ulti for a final battle after she promised to watch over Lin Yu’s promise to spare the Whitebeard Pirate Crew remnants.
• Ulti outlasted Jozu and killed him with her Wolf Tooth Club, then collapsed from exhaustion as Lin Yu caught her and obtained the Glitter Fruit.
• Smoothie collected Jozu’s blood and carried his body to Neptune, who arranged to bury him in Fish-Man Island’s cemetery.
• Ulti woke several days later, and Lin Yu relieved her headache before making her food and carrying her back to the captain’s quarters.
• Ulti pounced on Lin Yu when he told her to rest, and they kissed before turning off the lights; her favorability reached 100.

Lin Yu and Ulti spent the morning together before he discussed the difficulty of defeating Marco with Smoothie. He suggested that Smoothie use her Wring-Wring Fruit to drain Marco’s vitality, leaving Vivi’s hopes of obtaining the Phoenix Fruit unresolved.

• Lin Yu checked Ulti’s information and considered how her Obsession talent could help her pursue greater strength.
• Ulti confronted Lin Yu about his secret kiss, and the two kissed while Whitey Bay stood guard outside.
• After Ulti left for cultivation, Whitey Bay helped Lin Yu dress, and Smoothie teased him about the sounds she had heard overnight.
• Lin Yu asked Smoothie how long it would take to defeat Marco because Vivi was anxious to obtain his Phoenix Fruit.
• Smoothie explained that Marco’s recovery made him difficult to defeat, and Lin Yu suggested that she use her Wring-Wring Fruit to drain his vitality.

Lin Yu advised Smoothie to develop her Wring-Wring Fruit to extract vitality, then took Shirahoshi to communicate with the Sea Kings as she trained to awaken Poseidon’s power. After a month spent preparing Fish-Man Island for his departure, Lin Yu received a notification that his physique had reached Six-Star.

• Lin Yu suggested that Smoothie train her Wring-Wring Fruit to wring out vitality, stamina, and fatigue, potentially overcoming Marco’s strong recovery.
• Smoothie rushed to the God Slave's Ability Specialization Training Room to test the idea after Lin Yu explained how she might exploit Marco’s reliance on his body.
• Lin Yu took Shirahoshi to meet the Sea Kings, and she tucked him into her diving suit to swim faster.
• Over the next month, Lin Yu planned Fish-Man Island’s defenses while preparing to head to the New World once Reiju and the others coated Thriller Bark.
• Lin Yu received a notification that his physique had improved to Six-Star.

Lin Yu reached six-star ratings in his physical attributes and reviewed his crew’s prospects before Koala contacted the Revolutionary Army. She learned that Doragon had agreed to act against Lin Yu, leaving her stunned as Lin Yu cut off the call and concluded the Revolutionary Army had chosen Straw Hat Luffy over him.

• Lin Yu’s Physique, Qi and Blood, and Spirit advanced to Six-Star, and he checked his updated strength status.
• Lin Yu considered recruiting more crew members and celebrating his progress before Koala stopped him to request contact with the Revolutionary Army.
• Lin Yu gave Koala a Den Den Mushi and listened as the Revolutionary Army ordered her to return, saying Doragon had agreed to act against Lin Yu.
• Lin Yu crushed the Den Den Mushi, while Koala struggled to understand Doragon’s decision and Lin Yu concluded he had chosen to protect Straw Hat Luffy.

Lin Yu kept Koala from returning to the Revolutionary Army but offered to help her create a New Revolutionary Army, while she taught Shirahoshi Fish-Man Karate and reconsidered what liberation meant. After Reiju brought the coated Thriller Bark to Fish-Man Island, Lin Yu reunited with his crew and planned to let them explore before moving on to the New World.

• Lin Yu told Koala she could leave after teaching Shirahoshi Fish-Man Karate, and Koala chose to stay when he offered to help establish a New Revolutionary Army.
• Lin Yu told Koala he planned to liberate an oppressed country in the New World, leaving her wondering who truly represented the Revolutionary Army.
• Koala taught Shirahoshi Fish-Man Karate and, through discussions with Lin Yu and learning about his deeds, began to focus her understanding of liberation on the people's interests.
• Lin Yu noticed Koala's growing affection for him, while Shirahoshi, Madame Shyarly, Ishili, and Kaimi also formed bonds with him.
• Reiju brought the coated Thriller Bark and Snamon, Kalifa, and the others to Fish-Man Island, where they reunited with Lin Yu.
• Lin Yu decided to let the newcomers experience Fish-Man Island before heading to the New World and considered the group's future arrangements.

Lin Yu reviewed his crew’s growing strength and decided to strengthen Fish-Man Island’s defenses by leaving Kikyo, Gentian, and others there temporarily. He assigned the two Guardian Warrior Captains to train the island’s soldiers and gave them Devil Fruits, then carried them toward the bedroom.

• Lin Yu reviewed the crew’s combat power chart and noted that his crew had grown strong enough to rival the Four Emperors, though he still needed territory.
• Reiju asked whether Kikyo, Shyarly, Kaimi, Sarah, and others would stay on Fish-Man Island, and Lin Yu explained that he needed to secure the island and improve its defenses.
• Reiju offered to research weapons that used seawater against Devil Fruit users, and Lin Yu praised her understanding of his plans.
• Lin Yu told Kikyo and Gentian to remain on Fish-Man Island temporarily and supervise the soldiers’ training, with Sarah and others assisting them.
• Lin Yu gave Kikyo the Drunk-Drunk Fruit and Gentian the Candle Fruit, then carried the exhausted pair toward the bedroom.

Smoothie used her newly developed Life Extraction ability to defeat and kill Marco, and Lin Yu obtained the Phoenix Fruit. After preparing Fish-Man Island’s defenses, Lin Yu left for the New World aboard Thriller Bark, guided by a Sea King summoned by Shirahoshi.

• Smoothie convinced Lin Yu to take her to fight Marco, and Marco asked them to honor his wish to be buried with Jozu.
• Smoothie gradually drained Marco’s life force through hours of fighting, then killed him as he reminded her of her promise.
• Lin Yu received the Phoenix Fruit, while Smoothie fell asleep on his back after the battle.
• Reiju designed weapons using seawater and Sea Stone, and Lin Yu assigned Kikyo, Gentian, Sarah, and others to protect Fish-Man Island and Shirahoshi.
• Lin Yu said goodbye to Shirahoshi, who summoned a giant lantern Sea King to guide his voyage.
• Lin Yu left Fish-Man Island aboard Thriller Bark and followed the Sea King through the hollow beneath the Red Line toward the New World.