Chapter Summaries

Mousse observed Kuina and Zoro's duel and realized that Kuina's swordsmanship greatly surpassed her physical ability, while Zoro had far greater strength. After leaving Formless to watch Kuina, Mousse was alerted that she and Zoro had secretly taken real swords and left the dojo, so he went after them.

• Mousse sensed Kuina and Zoro and discovered that Zoro's physical ability was far greater despite being younger.
• Mousse watched Kuina defeat Zoro without their wooden swords clashing and recognized her exceptional swordsmanship.
• Mousse left Formless in the dojo to keep watch over Kuina, but the Homie frightened the children with repeated pranks.
• Formless reported that Kuina and Zoro had taken real swords and secretly left the dojo, and Mousse followed them.

Mousse challenged Kuina’s belief that women could not become the world’s strongest swordsman, then revealed his strength by catching Zoro’s sword barehanded. Kuina recognized that her weakness, not her gender, was what stood between her and her dream, and broke down in tears.

• Kuina struggled against Zoro with real swords but won their 2,001st duel by knocking his weapon away.
• Mousse questioned Kuina’s belief that women could not become Grand Swordmasters and compared gender differences with the strength gap between humans and Fish-Men.
• Zoro charged at Mousse, who caught his sword between two fingers and then appeared to seize Kuina, making Zoro panic.
• Kuina realized Mousse was not a vampire and calmly concluded that he was human despite his extraordinary strength.
• Kuina said she had understood that a weak woman like her could not become a Grand Swordmaster, and that her father had tried to spare her from that truth.

Mousse helped Kuina confront her resentment and explained that talent did not decide whether someone could become strong. He warned her that her swordsmanship-heavy training risked limiting her future growth, leaving her to consider how she could train more effectively.

• Zoro angrily defended Kuina when Mousse called her an insignificant whetstone, but Kuina apologized and admitted her remarks had come from resentment and jealousy.
• Kuina accepted her role in pushing Zoro to improve and vowed to beat him another thousand times, prompting them to prepare for another duel.
• Mousse interrupted and asked whether Kuina truly wanted to be only a whetstone, then revealed that his younger sister had once been far stronger than him.
• Mousse explained that he had surpassed his sister by pushing her to train and by using efficient methods, not merely by working hard.
• Mousse told Kuina that her swordsmanship-focused training could exhaust her potential for future growth.

Mousse explained that Kuina’s sword-focused training had neglected her physical development, but told her she could still make up some of the difference if she committed to the path of the sword. He began testing her resolve with a brutal weighted climb, leaving Kuina determined to attempt it.

• Mousse told Kuina that she had focused too much on swordsmanship during her growth years and let her physical strength fall behind Zoro’s.
• Kuina considered what she truly wanted and reaffirmed her dream of becoming a Grand Swordmaster.
• Mousse said Kuina had strong swordsmanship talent and could overcome her physical disadvantage if she built a better foundation.
• Zoro showed happiness at the prospect of Kuina becoming stronger, raising Mousse’s opinion of him.
• Mousse ordered Kuina to reach a mountain summit before noon while wearing a fifty-kilogram coat of gold and swinging Wado Ichimonji once with every step.
• Kuina recognized the climb’s difficulty but accepted the challenge rather than abandon her dream.

Mousse ended Kuina’s grueling test, then fed her and Zoro before showing them a recorded fight between Hawk Eyes Mihawk and Red-Haired Shanks. The children watched the two Grand Swordmasters exchange restrained sword strikes, puzzled that neither used the overwhelming attacks from their opening clash.

• Kuina pushed herself onward despite exhaustion until Mousse stopped her, declared that she had passed, and caught her when she fainted.
• Mousse found Zoro wandering near the mountain, then fed him and Kuina sweet Compressed Biscuits.
• Mousse took Kuina and Zoro to his hidden laboratory, where they explored its unfamiliar equipment.
• Mousse played a recording of Hawk Eyes Mihawk fighting Red-Haired Shanks, and the children watched their opening Conqueror’s Haki clash.
• Mihawk and Shanks continued with restrained sword exchanges, leaving the inexperienced Kuina and Zoro confused by their lack of further ultimate moves.

Mousse explained the duel between Hawk Eyes Mihawk and Red-Haired Shanks to Zoro and Kuina, then used Shanks’s loss of an arm to teach them about composure. He urged them to aim to defeat Mihawk, but revealed that the World's Greatest Swordsman was not among the world's five strongest.

• Mousse explained that the evenly matched swordsmen relied on Observation Haki and careful attacks rather than wasting strength on big moves.
• Hawk Eyes Mihawk and Red-Haired Shanks fought for hours without a victor, and Zoro and Kuina reconsidered their assumptions about Shanks.
• Mousse told the children that Shanks had lost an arm saving a child from a Sea Beast, and warned them that strength required a steady temperament.
• Mousse speculated that both swordsmen had held back during their duel and told Zoro and Kuina to remember Mihawk as the man they would need to defeat.
• Mousse revealed that Mihawk was not among the world's five strongest, shocking Zoro while Kuina accepted that swordsmanship was only one path to power.

Mousse taught Zoro and Kuina about swordsmanship and Observation Haki, and Kuina awakened hers with remarkable speed. He then met Dragon and Ivankov while pursuing contact with the Revolutionary Army, leaving Dragon to recognize him as the Messiah of White Town.

• Mousse challenged the idea that swordsmen should only fight other swordsmen and began teaching Zoro and Kuina Observation Haki.
• Zoro struggled to calm his mind, while Kuina awakened Observation Haki less than a day after starting the Sky Island training method.
• Mousse continued waiting in Shimotsuki Village for a chance to meet the Revolutionary Army's leader, Dragon.
• Mousse sensed Ivankov near the dojo, halted his experiment, and secretly approached him aboard the Revolutionary Army's ship.
• Dragon detected Mousse and stopped Ivankov from attacking, then recognized him as Charlotte Mousse, the Messiah of White Town.

Mousse saved the gravely injured Sabo by placing him in the Book World, where time stood still, and explained the limits of that ability to Dragon and Ivankov. He then met Bartholomew Kuma and recalled how Kuma became the Sorbet Kingdom’s king and earned the name “Tyrant.”

• Mousse recognized the injured child as Sabo and placed him in the Book World to halt the worsening of his injuries.
• Mousse told Dragon and Ivankov that he could not treat Sabo himself but could preserve him until they found a doctor.
• Mousse explained that people in the Book World could not recover their strength or mental energy, so it offered no true immortality.
• Dragon invited Mousse into the cabin, where he met Bartholomew Kuma, one of the Revolutionary Army’s founding elders.
• Mousse recalled that Kuma protected the orphaned Jewelry Bonney, drove pirates from the Sorbet Kingdom, and became its king.
• Kuma purged the returning nobles and sought to abolish noble status, prompting people to call him a tyrant.

Mousse met Bartholomew Kuma aboard the Revolutionary Army’s ship and realized Kuma could not use Observation Haki. After Dragon confirmed the weakness, Kuma asked Mousse how he could learn it, and Mousse recommended the training method used on Sky Island.

• The Five Elders sent Marines to restore the Sorbet Kingdom’s nobles, forcing Kuma to become a pirate while Jewelry Bonney disappeared before her coronation.
• Mousse noticed Kuma was not using Observation Haki and asked him directly whether he could use it, alarming Dragon, Ivankov, and the others.
• Dragon admitted Kuma lacked Observation Haki and said that learning it could make him one of the world’s three SS-rank powerhouses.
• Mousse revealed that he wrote the strength-analysis column Tengtianxiao, reassuring Dragon that he was not hostile to the Revolutionary Army.
• Kuma asked Mousse how he could learn Observation Haki, and Mousse recommended the training method from Sky Island.

Mousse examined the Revolutionary Army’s political differences and agreed to cooperate with Dragon against aristocratic rule based on bloodline, while withholding his own position. As Mousse taught Bartholomew Kuma the Sky Island training method and shared his ideas, Kuma began to suspect that someone had erased evidence of ways to use Devil Fruit powers to improve ordinary people’s lives.

• Mousse told Dragon, Bear, and Ivankov that he would consider cooperation only after understanding the Revolutionary Army’s goals, platform, and system.
• Mousse questioned the founders about whom they fought for and identified their differing views on injustice, finding that they could unite around opposing rule based on bloodline.
• Mousse refused to reveal his own position, suspecting that sending Bear undercover in the original timeline had been suspicious and choosing not to strengthen the Revolutionary Army’s left faction yet.
• Mousse taught Bartholomew Kuma the Sky Island training method and argued that powerful Devil Fruit users could produce enough food and necessities to prevent widespread poverty.
• Kuma suggested that insecurity led people to develop their abilities for combat, but Mousse claimed someone had erased traces of past efforts to use those powers for ordinary people.
• Kuma stood up in anger and asked whether the Celestial Dragons had erased those traces and why.

Mousse explained to Bartholomew Kuma how the Celestial Dragons and nobles maintained systems that left the weak dependent and disposable, using the Goya Kingdom as an example. Kuma accepted the need for deeper change, while Mousse admitted his royal privilege kept him from becoming a fully committed revolutionary.

• Mousse told Kuma that the Celestial Dragons suppressed productive development to preserve their rule and explained how their overthrow served ordinary people’s interests.
• Mousse described how the Goya Kingdom’s tax-haven wealth sustained its capital while former citizens were driven to survive among the garbage or risk the wilderness.
• Kuma recognized that even well-governed, industrial nations left the weak dependent on stronger people who did not need them.
• Kuma concluded that removing nobles was easier than eliminating the conditions that produced them.
• Mousse admitted that his royal background had given him education and opportunity, making it impossible for him to reject his family and life completely.
• Kuma understood Mousse’s limits and appreciated his unconditional intellectual support.

Mousse explained his strategy for weakening the Celestial Dragons and argued that opposition to the World Government could advance change even when rebels were morally flawed. He then outlined how the Revolutionary Army should distinguish among Marines, beginning with those who could become revolutionary allies.

• Mousse argued that poor families could pool money to buy affordable rifles and hunt for food instead of fighting over scraps.
• Mousse warned Bartholomew Kuma that the Celestial Dragons possessed a mysterious weapon capable of erasing even powerful opponents, and said the Revolutionary Army should avoid Holy Land Mary Geoise while gradually draining the World Government’s resources.
• Mousse argued that Marine service upheld the Celestial Dragons’ rule, while opposition to the Government weakened it, and disputed Kuma’s claim that Rocks’s success would necessarily have made the world worse.
• Mousse said the Revolutionary Army should not publicly condemn everyone employed by the World Government, since doing so would create too many enemies.
• Mousse began dividing Marines into groups and identified potential revolutionary allies as those who rejected unjust orders, disdained the Celestial Dragons, and favored the Revolutionary Army or kind-hearted pirates.

Mousse explained to Bartholomew Kuma that the revolution must neutralize obedient Marines temporarily, purge irreformable defenders of the Celestial Dragons, and guide society after victory rather than simply preserve the World Government. He left the discussion still uncertain about how a new society should balance the strong and the weak.

• Mousse distinguished Marines like Garp, who might be won over to neutrality, from officers like Sengoku and Akainu, whom he considered targets for elimination.
• Bartholomew Kuma agreed to fight those officers, but Mousse urged him to wait until he had awakened Observation Haki and explained that the revolution's aftermath remained unresolved.
• Mousse challenged Kuma's assumption that the World Government could improve after the Celestial Dragons were removed, arguing that old officials must be reformed, retired, or eliminated to prevent obstruction and restoration.
• Mousse said the revolution must transform everyone's way of life quickly so a powerful conqueror could not restore hereditary rule by destroying only a partially changed population.
• Mousse admitted that he still needed to study how a new society could balance the value of the strong with justice for the weak.

Mousse arranged for Trafalgar Law to study medicine with Crocus at Twin Capes, where the thirteen-year-old became a gifted surgeon. Law operated on Sabo and saved him without leaving scars, though Sabo lost his memories, and Monkey D. Dragon learned that Sabo was Luffy’s sworn brother.

• Mousse reunited Brook with Laboon at Twin Capes, and Crocus agreed to teach Trafalgar Law.
• Law trained with Seastone and studied medicine under Crocus, who praised his talent and predicted he would become a legendary surgeon.
• Crocus warned Mousse that Sabo’s severe injuries meant surgery might not be enough to ensure he woke up.
• Law used the Op-Op Fruit to operate on Sabo in stages, successfully healing him without scars.
• Sabo woke with his memories lost, and Monkey D. Dragon discovered that he was Luffy’s sworn brother.

After Kuina survived a fall thanks to Mousse’s hidden protection, Mousse rushed to help the severely injured Fisher Tiger. He arrived aboard the Sun Pirates’ captured warship as Fisher Tiger refused a transfusion of human blood.

• Mousse returned to Shimotsuki Village and revealed that Homie Formless had secretly cushioned Kuina’s fall down the stairs.
• Mousse told Kuina he had watched over her because he saw his younger self in her, then teased her until his Den Den Mushi rang.
• After learning Fisher Tiger had been ambushed and gravely injured, Mousse followed his Life Card toward the Sun Pirates.
• Arlong called Mousse for help as Marines bombarded the pirates’ ship, then Jinbe led the crew to defeat the Marines and seize a warship.
• Hachi found matching stored blood, but Fisher Tiger refused a transfusion because it was human blood.
• Mousse arrived and offered Fish-Man blood; Jinbe stopped Arlong from attacking him, and Fisher Tiger allowed Mousse aboard.

Mousse saved the gravely wounded Fisher Tiger by preserving him inside the Book World, then took him to Fish-Man Island to seek a blood transfusion. King Neptune learned of Tiger’s attack and faced the political complications of helping the Sun Pirates.

• Mousse covered Fisher Tiger with a massive Scroll, and Arlong attacked him before Mousse struck Arlong with lightning.
• Aladdin noticed that Fisher Tiger and the operating table had vanished rather than been crushed, and Jinbe apologized after Mousse explained that he had stopped time to preserve Tiger’s life.
• Mousse spoke with Fisher Tiger inside the Book World, where Tiger accepted the plan to survive without receiving human blood and grew hopeful about Totto Land.
• Mousse and Amon traveled to Fish-Man Island to find blood for Fisher Tiger, and Neptune worried that Mousse’s arrival might force the Ryugu Kingdom to choose a side.
• Neptune learned that Fisher Tiger had been ambushed by the Marines and was near death, raising concerns because the kingdom had avoided openly supporting the Sun Pirates.

Mousse observed the hardships Fish-Men faced on Fish-Man Island and challenged Princess Otohime's methods for winning human acceptance. Otohime listened as he argued that moving the island's people to Totto Land could address both discrimination and poverty, though she worried about the kingdom's future after its strongest rulers died.

• Neptune ordered notices posted to find Fish-Men and merfolk with the rare blood type needed for donation.
• Mousse declined Neptune's formal banquet and toured Fish-Man Island, observing that many Fish-Men, especially women, lived in poverty.
• Mousse told Otohime that seeking human acceptance could not succeed while poor Fish-Men lacked food and that her supporters' enthusiasm would fade under daily pressures.
• Mousse criticized Otohime for appealing to the Celestial Dragons and World Government instead of seeking help from places that welcomed Fish-Men.
• Otohime considered Mousse's suggestion to move Fish-Man Island's population to Totto Land but worried about what would happen when Charlotte Linlin and Charlotte Katakuri died.

Mousse’s plan to encourage Fish-Men to immigrate to Totto Land was blocked by Fish-Man Island’s ruling interests, so he instead arranged for Fisher Tiger to see Totto Land and promote it to his people. Fisher Tiger agreed to teach Praline, but Arlong’s crude remark about her provoked an immediate punch.

• Mousse proposed letting poor Fish-Men immigrate to Totto Land, but Neptune explained that this would threaten the interests of Fish-Man Island’s wealthy class and make the immigrants subjects of Totto Land.
• Mousse arranged for Fisher Tiger to visit Totto Land and instructed Perospero to show him its benefits without deceiving him.
• Fisher Tiger was moved by Totto Land’s abundance, free education, and courteous Fish-Man citizens, and he resolved to encourage his compatriots to immigrate.
• Fisher Tiger agreed to help teach Mousse’s sister Praline Fish-Man Karate and Fish-Man Jiu-Jitsu after discovering she was a Fish-Man.
• Arlong made a rude remark when Praline appeared, and a white-clad figure struck him in the mouth.

Praline crushed Arlong and then sparred with Jinbe, revealing strength that astonished the Sun Pirates. Mousse explained that she had trained in a Drying Room, leaving Fisher Tiger stunned by the harshness of her training.

• Praline flattened Arlong’s snout with a punch, and the Sun Pirates learned she had used only twenty percent of her strength.
• Fisher Tiger admitted he could not teach Praline and suggested Jinbe spar with her instead.
• Praline kicked Jinbe flying, though his Fish-Man Jiu-Jitsu kept him from being seriously injured.
• Fisher Tiger asked Mousse how Praline had become so strong, and Mousse said she had trained in the Drying Room.
• Fisher Tiger recalled fleeing Alabasta’s desert and reacted with disbelief that Mousse had made Praline train in an even harsher environment.

Fisher Tiger questioned Mousse’s harsh training of Praline, but learned that she had kept training by choice and had grown close to her brother. Jinbe fought Praline again, adapting to her attacks and striking back as their battle continued.

• Fisher Tiger challenged Mousse over Praline’s childhood training, and Praline defended her brother before Mousse stopped her from attacking their guest.
• Mousse explained that he had trained Praline strictly because his family had fallen out with the World Government, and praised her for continuing to train on her own.
• Jinbe challenged Praline again and used agility and his Observation Haki to evade most of her powerful kicks.
• Jinbe countered Praline with Five Thousand Tile Seiken, striking the bend of her leg and forcing her to retreat in pain.
• Praline grew angry and attacked with Tempest Kick, while Jinbe used Armament Haki to withstand the ranged slashes.