Chapter Summaries

Mousse reunited with Praline and visited Perospero’s expanded laboratory, where he met Vegapunk and learned that the Human Gigantification research would take years to begin. The chapter left Mousse considering the delay as he learned the cloning device was still under development.

• Mousse saw that Praline’s vitality had risen to more than twenty-one times his own and decided she needed a Gravity Room to keep improving her training.
• Mousse went to Perospero’s laboratory, where Perospero welcomed him and introduced him to the scientist Beck, who Mousse guessed was Vegapunk.
• Mousse tricked Vegapunk into revealing his identity, then impressed the scientist with his knowledge and insight.
• Vegapunk told Mousse that the team was still designing a Cloning Device and would need to test it before beginning to clone Charlotte Linlin.
• Vegapunk explained that the research could not officially begin until the latter half of the year after next because the fetus would develop at a normal rate.

Mousse asked Vegapunk for ways to intensify his younger sister Praline’s training, but they could neither safely separate a Devil Fruit ability from its user nor pursue the artificial-gravity research without the Mane Mane no Mi. Vegapunk suggested exploiting Praline’s Fish-Man weakness to hot, dry conditions, and Mousse decided to build a training room around that idea.

• Mousse asked Vegapunk about researching artificial gravity and safely removing a Devil Fruit ability, but Vegapunk explained that the ability disappeared when its user’s soul vanished.
• Mousse abandoned his plan to have his sister eat a Devil Fruit and asked Vegapunk to create a detector for Devil Fruits and their users, but Vegapunk avoided the request because it could threaten peace with the World Government.
• Mousse explained that his young sister needed more intense training, and Vegapunk learned that she was a Fish-Man.
• Vegapunk pointed out that Fish-Men could be weakened by hot, dry environments, prompting Mousse to plan a training room that would exploit Praline’s weakness.

Mousse returned to Totto Land and caught up with Charlotte Perospero on the kingdom’s rapid growth and expanding influence while beginning to learn from Vegapunk. The chapter left Mousse and Perospero discussing Totto Land’s growing intelligence network and the challenges of managing its expansion.

• Mousse spoke with Vegapunk and recognized that practical scientific skills were what he most needed to learn from him.
• Charlotte Perospero told Mousse that Totto Land’s population had surged, its islands were being developed, and new island lords were being appointed.
• Perospero described the strain that immigration and Totto Land’s new offices across the seas had placed on the kingdom’s manpower.
• Mousse suggested expanding the islands to ease overcrowding, and Perospero remembered that Mousse’s Book-Book Fruit could strengthen solid Homies.
• Perospero praised Mousse’s strength, then playfully licked his face in retaliation after Mousse modestly claimed he still had far to go.
• Perospero explained that Totto Land’s procurement offices had helped its intelligence network spread into the first half of the Grand Line and the Four Blues.

Totto Land’s influence and intelligence network continued to expand as nations and underworld factions sought its protection. Mousse and Perospero discussed dealing with Doflamingo over soaring Seastone prices, then learned that five pirates had already joined the World Government’s Shichibukai, including the unexpectedly young Grand Swordmaster Dracule Mihawk.

• Totto Land attracted new allies, including the Pudding Kingdom, while Whitebeard still controlled a larger sphere of influence in the New World.
• Perospero complained that Doflamingo’s Seastone purchases had driven prices sharply higher and said he wanted to eliminate him.
• Mousse proposed inviting Doflamingo to negotiate a partnership that could reduce Seastone prices and deprive Kaido of their money.
• Perospero approved Mousse’s proposal and wrote it down before asking about the Shichibukai plan.
• Mousse learned that Crocodile, Doflamingo, Moria, Amazon Lily’s Empress, and Dracule Mihawk had joined the Shichibukai.
• Mousse was startled to learn that Mihawk had become a recognized Grand Swordmaster at twenty-one.

Charlotte Mousse reflected on Hawk Eyes Mihawk’s lonely search for worthy opponents and wondered why Young Whitebeard had not appeared. He then discussed Totto Land’s expanded education policies with Charlotte Perospero.

• Charlotte Mousse reasoned that Hawk Eyes Mihawk had become the world’s greatest swordsman early, then spent decades waiting for challengers and driving potential rivals away through his lethal dueling style.
• Mousse concluded that Mihawk’s narrow choice of opponents limited his growth and made his complaints about loneliness self-inflicted.
• Mousse wondered whether Young Whitebeard was absent because he was too weak, Miss Bakkin feared revealing him, or he did not yet exist.
• Charlotte Perospero reviewed Totto Land’s policies with Mousse, including extending compulsory education to seven years and emphasizing physical training.
• Mousse learned that Charlotte Linlin’s promise of custom Homies toys motivated children to study and train, with outstanding students set to receive further focused training.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.