Arc 10The Wano Campaign

Mousse advanced his research and expanded his power while helping Katakuri challenge Kaido in Wano. After learning about Kaido’s past and leaving Little K with Yamato, Mousse infiltrated the battle between Oden and Kaido and captured Kanjuro and Semimaru.

  • Mousse developed Little K from his cancerous cells, discovered that it could remove cancer cells, and later helped Vegapunk investigate cloning, soul transfer, and Devil Fruit extraction.
  • Katakuri borrowed Amon to fight Kaido in Wano, where he defeated King with Mousse’s help and captured Kaido’s attention.
  • Mousse learned that Shimotsuki Ryuma had slaughtered Kaido’s Oni Tribe, and he urged the War God Halberd to release its ancient hatred while Katakuri fought Kaido.
  • Katakuri earned the Demon Halberd’s recognition in a desperate attack, then left for surgery, while Kaido took Mousse to Onigashima and introduced him to Yamato.
  • Mousse learned about Yamato’s mother, gave her Little K as a companion, and secretly took Queen’s memories and scientific knowledge.
  • Mousse followed Oden and the Nine Red Scabbards into battle, captured Kanjuro, and stopped Kurozumi Semimaru from calling to Oden before storing her in the Book World.
Chapters 226–250 Vol. 3 Read

Ch. 226Have More Children

Mousse discussed Totto Land’s education and family-growth policies with Perospero, then learned about Clone Technology’s limits and worried when Katakuri had not returned. After calling Katakuri and bringing Amon to Cake Castle, Mousse greeted his angry mother with a promised gift.

  • Mousse’s policies favored cultivating talented students, while less capable residents could live on subsidies or take service jobs, and large families received generous support.
  • Perospero told Mousse that Clone Technology produced clones with short lifespans and limited opportunities to grow strong, leading Mousse to wonder whether their souls were incomplete.
  • Mousse noticed Katakuri was late, called him, and learned he was suppressing the unruly War God Halberd on a deserted island to protect Totto Land.
  • Mousse told Katakuri to return to an outlying island and asked him to send Amon to Mousse as soon as possible.
  • Mousse took Amon to Cake Castle, where Charlotte Linlin waited angrily, and offered her a gift before she could scold him.

Ch. 227The Best Gift

Mousse gave Charlotte Linlin Amon in his new Grizzly Bear form, delighting her and easing her anger over the Swamp-Swamp Fruit. After discovering that explosives in a treasure chest might be remnants of Pluton, Mousse decided they were a more urgent prize than Fish-Man Island’s secret medicine.

  • Charlotte Mousse transformed Amon into a huge, cuddly Grizzly Bear and gave him to Charlotte Linlin, who happily embraced him.
  • Mousse prompted Charlotte Linlin to realize Amon was a Homie, and Amon explained that he had fused with another Poneglyph.
  • Mousse and Amon kept quiet about Mousse’s ability to read the ancient script, fearing Charlotte Linlin would seek out Poneglyphs and attract the World Government’s attention.
  • Charlotte Linlin ordered Amon to stop floating so she could use his immense weight for exercise, and Mousse saw that Cake Castle’s floors withstood it.
  • Mousse reconsidered the explosives in the Treasure Chest, suspecting they might be connected to Pluton, and decided to prioritize obtaining them over the secret medicine.

Ch. 228Sandwich Cookie

Charlotte Mousse gained control of several intelligence offices and flew back toward Candy Island, where he met Cracker testing new defensive armor. He also examined the Flower Kingdom’s ancient halberd and learned how it could damage souls, leaving him wondering how its original wielder had discovered the technique.

  • Charlotte Mousse asked Mama to let him manage intelligence and received command over operatives in Fish-Man Island, the Flower Kingdom, Mary Geoise, and Marineford.
  • Mousse decided to fly back to Candy Island himself because Amon was staying with Mama, and he found the slow journey difficult after getting used to Amon’s speed.
  • Mousse encountered Cracker, who demonstrated Sandwich Cookie armor that could withstand advanced Armament Haki but was bulky and lacked offensive power and flight.
  • Mousse examined the Flower Kingdom’s War God Halberd and concluded that its crafted design and autonomous slashing attacks set it apart from the legendary weapon he had imagined.
  • Katakuri explained that the halberd could permanently damage souls by applying a principle related to Conqueror’s Haki, leaving Mousse curious about how the Martial God had developed the technique.

Ch. 229From Flamingo to Roasted Chicken

Mousse used Charlotte Oven to overpower and nearly roast Donquixote Doflamingo, then secured concessions from the Donquixote Family. Doflamingo left with Totto Land's demands, while Pica's visible work would conceal Amon's underwater expansion of the archipelago.

  • Mousse reflected that Katakuri had barely controlled the unruly War God Halberd after nearly a day of effort.
  • Half a month later, Doflamingo arrived in Totto Land, where Charlotte Oven attacked him with his heat.
  • Oven dodged Doflamingo's attacks, burned away most of his clothing, and overwhelmed his awakened strings until Mousse stopped him from killing Doflamingo.
  • Baron Tamago knocked Lao G down before he could intervene, and the badly burned Doflamingo trembled after Mousse called him a dog.
  • Mousse demanded that the Donquixote Family coordinate Seastone prices with Totto Land, give Totto Land first pick of future Paramecia fruits, and lend Pica to move mountains for the archipelago's expansion.
  • Mousse planned to use Pica's conspicuous work to distract attention from Amon's underwater expansion.

Ch. 230A Question Raised by Bathing

Mousse discovered that water squeezed from living organisms did not retain seawater’s harmful effects on Devil Fruit users, prompting him and Vegapunk to investigate how organisms broke down PYROBROIN. Their experiments indicated that the process occurred within cells, and Smoothie avoided Mousse for half a year after being made to provide samples.

  • Vegapunk gave Mousse a compact, custom-made gyroscope watch, while Mousse continued training and supplied Praline and his siblings with storybooks.
  • Smoothie offered Mousse a bath using water produced by her Squeeze-Squeeze Fruit, and Mousse happily swam in the tub.
  • Mousse realized that Smoothie’s water might reveal how living organisms neutralized seawater’s effects and rushed to share the idea with Vegapunk.
  • Vegapunk recruited Charlotte Linlin and Smoothie to help test plants and bodily samples for PYROBROIN, despite Smoothie’s reluctance.
  • Mousse and Vegapunk concluded that PYROBROIN was broken down by a cellular metabolic process rather than digestion, and Smoothie avoided Mousse for six months.

Ch. 231The Unexpectedly Uncovered Secret (Part 1)

Charlotte Mousse and Vegapunk created Little K, a Homie made from cancerous tissue that could break down Seastone and absorb cancer cells. After Little K grew larger from metabolizing Seastone, Mousse suspected PYROBROIN might explain why some creatures became enormous, but he found examples that challenged the idea.

  • Charlotte Mousse proposed turning cancerous tissue into a Homie so Vegapunk could study its ability to break down PYROBROIN.
  • Charlotte Mousse donated his cancerous cells and soul, and Charlotte Linlin turned the tissue into a Homie with Charlotte Perospero's oversized microscope.
  • Charlotte Mousse named the rapidly growing, shape-changing Homie Little K and realized it could remove cancer cells from his body.
  • Little K broke down Seastone and grew as its cells expanded, leading Mousse to suspect that metabolizing PYROBROIN might cause living things to grow larger.
  • Mousse considered whether PYROBROIN explained the size of Zunesha, the Super Sea Kings, and his mother, but recalled that Monkey D. Garp and Charlotte Katakuri did not fit the theory.

Ch. 232The Secret Uncovered by Accident (Part 2)

Charlotte Mousse concluded that Charlotte Linlin’s enormous size was partly linked to consuming large quantities of PYROBROIN in beverages, but decided not to tell her because the effect was limited and would raise false hopes. After a peaceful year and a half of training and cloning preparations, two Book Worlds suddenly appeared.

  • Charlotte Mousse connected Charlotte Linlin’s size to her heavy consumption of beverages containing PYROBROIN and chose to keep his theory from her.
  • Mousse considered the limits of PYROBROIN, concluding that it could not make ordinary people grow as large as Charlotte Linlin and that Food Addiction was the fundamental cause of her growth.
  • Over nearly a year and a half, Mousse filled his Haki reservoir, trained, and watched Praline surpass five hundred Doriki while Charlotte Linlin’s cloning device passed inspection.
  • Vegapunk suggested that Charlotte Linlin carry a cloned child herself to shorten the process, but Perospero nearly strangled him and the idea was abandoned.
  • Just as Mousse hoped Food Addiction research would begin, two Book Worlds appeared at once.

Ch. 233Book World (Part 1)

Mousse explored the front and reverse sides of his Book World, learning how its unusual rules made it far more powerful than Charlotte Mont-d'Or's ability. He discovered that copied books and their readers fueled the reverse side, while Amon's hidden reshaping of Totto Land prepared it for a future confrontation with the World Government.

  • Mousse found that the front side of his Book World could imprison people in a vast space where time and aging stopped, while the reverse side contained worlds of pure consciousness.
  • Mousse learned that he could not fully close the book passage while inside the Book World, leaving him as the potential target for anyone trying to rescue a prisoner.
  • Mousse realized the front side could extend his lifespan, though halted metabolism prevented exercise, digestion, and recovery from extreme exhaustion.
  • Mousse explained that Amon had used Pica's Stone-Stone Fruit ability to reshape Totto Land's seabed, enabling him to raise large areas of land quickly when needed.
  • Mousse discovered that copying books created pages for the reverse side and that their brightness appeared to reflect how many people had read them.
  • Mousse noticed that Dragon Ball's page was brighter than Havoc in Heaven's, likely because it had reached many readers through Morgans's newspaper.

Ch. 234Book World (Part 2)

Mousse investigated how his Book World could capture souls and whether separating a person’s soul from their body could extract a Devil Fruit. His experiment succeeded with a clone and revealed that a soul might prevent the premature aging clones normally suffered.

  • Mousse discovered that his Book World could capture souls from a distance, and that Homies vanished permanently when their souls were removed.
  • Mousse tested whether capturing a Devil Fruit user’s soul would make the fruit reappear, but the fruit emerged only after the body starved to death, and returning the soul could not revive it.
  • Mousse reasoned that the Devil Fruit’s power would leave only after the user’s brain had irreversibly died, then proposed transferring the soul into a clone instead.
  • Mousse and Vegapunk successfully placed a captured soul into an immature clone, confirming that the clone could accept it.
  • Mousse observed that the clone with the original soul aged more slowly and concluded that incomplete souls might cause clones’ premature aging.

Ch. 235Successful Extraction

Mousse and Hogback developed a surgery to remove Devil Fruit abilities by draining the patient’s blood under ultra-low-temperature protection. After successfully removing Charlotte Opera’s Cream-Cream Fruit, Mousse and Vegapunk began investigating whether an object with a soul could eat a non-Zoan Devil Fruit.

  • Mousse discovered that stopping the heart and breathing could trick the Devil into leaving, but it remained inside the body when time stopped in his Book World.
  • Mousse chose Hogback to develop the operation, and they settled on draining the patient’s blood while protecting the head at ultra-low temperatures.
  • Mousse and Hogback successfully removed Charlotte Opera’s Cream-Cream Fruit in an underwater laboratory.
  • Charlotte Opera joined Charlotte Comte, Charlotte Cantz, and Charlotte Cavalier in their fusion, which became far more powerful and earned them the de facto title of Fifth Sweet Commander.
  • Mousse suggested testing whether a soul-bearing object could eat a non-Zoan Devil Fruit, and Vegapunk joined the research group.

Ch. 236The Origin of Food Addiction

Mousse and Vegapunk investigated the origin of Charlotte Linlin’s Food Addiction and concluded it may have begun as an addiction to a World Government gigantification drug, distorted into food cravings by sensory displacement. Vegapunk explained that the addiction was mainly psychological, leaving Mousse with a possible path toward treating it.

  • Mousse’s cream-making Homie produced enormous quantities but inferior cream, so Charlotte Linlin destroyed it and gave its reborn Devil Fruit to Charlotte Mont-d'Or.
  • Vegapunk created a clone of Charlotte Linlin, and Mousse was excited when it appeared ordinary-sized and physically unremarkable.
  • Vegapunk recognized that Charlotte Linlin’s enlarged cells resembled the effects of the World Government’s failed Human Gigantification drug project.
  • Mousse asked how drug addiction could become a craving for different foods, and Vegapunk suggested sensory displacement had transformed the craving into Food Addiction.
  • Vegapunk explained that addiction was primarily psychological and that Charlotte Linlin’s physical dependence would weaken after stopping the drug.

Ch. 237Severing the Flow with a Swing of the Blade

After Vegapunk explained that Charlotte Linlin’s Soul-Soul Fruit might worsen her Food Addiction, Charlotte Mousse traveled with Charlotte Katakuri to Wano Country. Katakuri retaliated against guards who shot at Mousse by cutting away Wano’s waterfall entrance.

  • Vegapunk said psychological triggers should be avoided and suggested Charlotte Linlin’s Soul-Soul Fruit could aggravate her Food Addiction.
  • Charlotte Katakuri asked to borrow Amon so he could fight Kaido in Wano Country, and Mousse decided to accompany him.
  • Mousse and Katakuri traveled inside the Book World and shared afternoon tea before Amon reached Wano Country.
  • As Mousse opened the Book World’s exit, guards fired bullets at him, so Katakuri rushed out to confront them.
  • Katakuri swung his War God Halberd and cut away the waterfall sealing Wano Country’s entrance, killing the guards stationed above it.

Ch. 238Capture Inferno Calamity Alive (Part One)

Katakuri fought King while explaining Conqueror’s Haki infusion to Mousse, and Amon joined the battle. Mousse discovered King resisted his powers, but King then broke through and charged straight at him.

  • Katakuri dodged King’s Tankyūdon and pierced him with the War God Halberd, then explained the advantage of Conqueror’s Haki infusion to Mousse.
  • King escaped and attacked Katakuri with Diao Zi Zun Huang, but Katakuri evaded the strike by reshaping his mochi body.
  • Mousse sent Amon to fight King, and Amon used its speed and changing forms to repeatedly intercept him.
  • Mousse tried Xuanhuang’s yellow gas on King, but it had no effect because King was a Lunarian.
  • King kicked Amon away, used the recoil to accelerate, and charged directly at Mousse.

Ch. 239Capture Inferno Calamity Alive (Part 2)

Mousse used Formless to infiltrate and hinder King, then had Amon capture him in the Book World. The chapter ended with King unconscious and imprisoned.

  • King charged at Mousse, but Formless secretly redirected his attack with its superfluid ability.
  • Formless infiltrated King's body and tried to freeze him from within, but King's Lunarian power resisted it.
  • Formless expanded into gas inside King, swelling his body until he forced it back into liquid form with Armament Haki.
  • King's movements became sluggish, allowing Mousse to approach with Amon.
  • Mousse opened Amon's Book World and captured the unconscious King inside.

Ch. 240Mousse's Aspiration

After taking King's soul, Mousse began considering using his growing power to remake the world according to his ideals. He kept King captive to draw Kaido into a serious fight with Katakuri, then reconsidered Oden's choices after seeing Wano Country.

  • Mousse took King's soul and contemplated using his strength to reshape the world, but the strange force in his heart soon faded.
  • Amon caught King inside the Book World, frightening two Beasts Pirates grunts, who fled to report the incident to Kaido.
  • Katakuri urged Mousse to release King, but Mousse proposed keeping him captive until Kaido defeated Katakuri.
  • While waiting for Kaido, Mousse surveyed Wano Country and judged that its people were managing to get by.
  • Mousse reconsidered Oden's five-year bargain with Kaido and Orochi, weighing whether Oden had made a heroic sacrifice or a foolish mistake.

Ch. 241King of Sneak Attacks

Kaido flew to the waterfall after learning Katakuri had captured King, expecting to confront the Big Mom Pirates. Katakuri dodged Kaido’s Thunder Bagua and wounded him with his trident, whose blade began to glow as Kaido demanded to know where he had gotten it.

  • Two Beasts Pirates reported to Kaido that Katakuri had arrived with a giant monster and captured King.
  • Kaido transformed into a dragon and flew to the waterfall, where he saw Katakuri’s challenge marked on the ground.
  • Katakuri sensed Kaido approaching, removed his scarf, and prepared to fight him.
  • Mousse claimed responsibility for capturing King and offered to release him if Kaido defeated Katakuri.
  • Kaido launched a surprise Thunder Bagua, but Katakuri foresaw the attack and dodged before countering with his trident.
  • Katakuri wounded Kaido, and Kaido asked where he had obtained the weapon as its blade began to glow red.

Ch. 242Kaido's Childhood (Part 1)

Mousse assessed Kaido’s strength while Katakuri’s question prompted Kaido to recall the history of the Oni Tribe. The account ended with Shimotsuki Ryuma killing nearly all the Oni on Onigashima, sparing only Kaido, who was not yet three years old.

  • Mousse compared Kaido’s vitality and Haki with Katakuri’s and concluded that Kaido could contend with Garp and Whitebeard.
  • Kaido sensed Mousse watching him and challenged the red-haired boy.
  • Katakuri asked Kaido about his Oni Tribe origins, and Kaido sat down to remember his childhood.
  • The survivors of the Evil Spirits fled the Ice Continent, reached Wano Country, and were driven to Onigashima by the samurai.
  • Shimotsuki Ryuma swam to Onigashima and slaughtered nearly the entire Oni Tribe, leaving the toddler Kaido alive.

Ch. 243Kaido's Childhood (Part 2)

Mousse explained Kaido’s brutal childhood, his hatred of Wano, and how the War God Halberd’s old hatred for the Evil Spirits had wounded him. He urged the weapon to let go of that hatred while Katakuri sought to master it as his own power.

  • Kaido survived alone on Onigashima after Ryuma left, grew strong, and fled to sea rather than invade Wano.
  • Twenty years later, Kaido returned to Onigashima and allied with Kurozumi Orochi in seeking revenge against Wano.
  • Mousse connected Kaido’s ancestry to the Ice Continent’s Evil Spirits and explained why the War God Halberd’s Haki suppressed his regeneration.
  • Katakuri accepted that he needed to attune to the halberd and master its power instead of relying on its independent attacks.
  • Mousse addressed the halberd, arguing that the Evil Spirits no longer posed a great threat and that it should release its ancient hatred.

Ch. 244Dull? Brutal!

Katakuri and Kaido fought a drawn-out battle until Kaido used Drunken Thief to knock Katakuri down and tried to enter Mousse’s Book World. Katakuri rose for one last attack, striking Kaido with a Flying Slash as Kaido’s head was wedged in Amon’s mouth.

  • Katakuri and Kaido resumed their fight, with Katakuri evading attacks and wearing Kaido down rather than clashing directly.
  • Mousse entered the Book World, took genetic samples from the unconscious King, and confirmed the extent of the Lunarian’s passive environmental immunities.
  • Kaido grew frustrated with Katakuri’s evasive tactics and used Drunken Dragon Eight Trigrams’ Drunken Thief to steal Katakuri’s advanced Observation Haki and knock him down.
  • Kaido demanded that Mousse release King, then tried to crawl into the Book World through Amon’s mouth.
  • Katakuri struggled back to his feet and poured his remaining Haki into the Demon Halberd, sending a Flying Slash into Kaido while Amon held Kaido’s head in place.

Ch. 245Both Sides Badly Hurt? Great Gains!

Katakuri’s desperate strike badly wounded Kaido but earned him the Demon Halberd’s recognition, while Katakuri himself was left in need of surgery. Mousse stayed behind with Kaido, who took him to Onigashima and introduced him to Yamato.

  • Kaido and Amon were sent flying by Katakuri’s slash, leaving Kaido severely wounded.
  • Mousse saw Katakuri’s critical condition, blamed himself for leaving during the fight, and tried to attack Kaido before Katakuri stopped him.
  • Kaido checked that King was unharmed, while Katakuri apologized for acting rashly to protect Mousse.
  • Mousse realized Katakuri’s desperate attack had earned the Demon Halberd’s recognition, and Katakuri left for Candy Island to undergo surgery.
  • Mousse stayed behind, and Kaido took him to Onigashima, where he introduced him to Yamato.

Ch. 246Yamato's Mother

Mousse took eight-year-old Yamato away from Kaido to learn about her missing mother, then reconstructed the woman’s face with his Book-Book Fruit. The portrait looked like Charlotte Linlin, leading Mousse to suspect Yamato’s mother was a woman Kaido chose as a substitute for his unfulfilled love for Linlin.

  • Mousse questioned Yamato and learned that Kaido’s brutal upbringing had begun long before she admired Oden.
  • Mousse tested Yamato’s strength by twisting her horns, while Kaido left them alone to drink.
  • Mousse flew away with Yamato on his scroll to ask about her mother, whom she had never known.
  • Mousse drew a portrait of Yamato’s mother and revised it according to Yamato’s corrections.
  • Mousse recognized the woman’s resemblance to Charlotte Linlin and guessed that Kaido had chosen her as a replacement for Linlin, then killed her after realizing the resemblance could not replace his feelings.

Ch. 247Soul Search

Mousse reflected on Kaido’s past and Yamato’s desire to live as a human, then waited to see whether Oden Kozuki would act against Kaido after his recovery. He used Soul Search on Queen and learned how Queen’s family left the Flower Kingdom and how Queen became a scientist in Germa 66.

  • Mousse considered how Kaido’s violent choices harmed Yamato and reaffirmed that strength should bring positive change.
  • Mousse waited for Oden Kozuki to confront Kaido, but Kaido recovered quickly and Oden did not appear.
  • Mousse decided to remain and watch the delayed battle between Oden Kozuki and Kaido.
  • Mousse secretly used Soul Capture and Soul Search on Queen to obtain his knowledge and memories.
  • Mousse learned that Queen was born in the Flower Kingdom, grew up in the North Blue under Germa 66, and became a scientist before Vinsmoke Judge returned.

Ch. 248There Is No Cure for Idiocy

After learning Queen’s history with Germa 66, Mousse drew on the scientist’s knowledge and developed a new approach to detecting Devil Fruit powers. As war approached in Wano, he gave Yamato Little K as a gift before the conflict could separate them.

  • Mousse discovered that Queen’s grudge against Judge began when Judge expelled him from Germa 66, and he learned from Queen’s technology and research methods.
  • Mousse became confident he could become the world’s greatest scientist and began developing a way to detect Devil Fruit powers without help from Beck.
  • Mousse recognized that Kaido’s forces were preparing for battle and decided to give Yamato a gift before leaving Wano.
  • Yamato mistook Little K for a raw meatball, but she grew excited when it transformed into different shapes.
  • Mousse gave Little K to Yamato so she would have a useful companion while he was away.

Ch. 249Secret of the Poneglyph

Mousse watched the battle between Oden Kozuki’s forces and the Beasts Pirates while reflecting on the secret behind the Poneglyphs’ indestructibility. As King and Queen entered the fight, Mousse saw the opening he had been waiting for.

  • Mousse left Yamato with Little K, which could shrink, hide, and eventually chew through the Seastone cuffs to help her escape.
  • Mousse concealed himself in Amon’s Book World and followed the Beasts Pirates’ army toward the battle without being detected.
  • Mousse recalled learning from Vegapunk that Poneglyphs were made by fixing awakened Barrier-Barrier Fruit power into Seastone softened with heated Sake-Iron Ore.
  • Oden Kozuki led the Nine Red Scabbards and Shinobu through the Beasts Pirates’ forces in a charge toward Kaido.
  • King and Queen joined the battle, breaking the brief deadlock and giving Mousse the opportunity he had been waiting for.

Ch. 250Little Yellow Oriole

Mousse captured Kanjuro and Kurozumi Semimaru to claim their Devil Fruits while Oden launched a powerful attack that brought Kaido crashing down. After Oden’s strike, Mousse’s prepared trigger helped him intercept Semimaru before she could impersonate Momonosuke and call for help.

  • Mousse had Amon carry him behind Kanjuro, knocked him unconscious, and stored him in the Book World.
  • Queen cheered at Kanjuro’s capture, while Denjiro stayed occupied fighting Queen.
  • Kin'emon split Kaido’s Bolo Breath with his Flame Cutter swordsmanship, allowing Oden to close in and wound Kaido with Peach Blossom Ten Fists.
  • Mousse recognized Kurozumi Semimaru disguised as Momonosuke and used a distant explosion to prevent her from calling to Oden.
  • Mousse activated his prepared self-hypnosis trigger, intercepted Semimaru with Amon, and stored her in the Book World.
Arc 10 of 15