Chapter Summaries

Mousse entered the Tree of Knowledge to use his Book-Book Fruit ability on Ohara’s vast collection, while Dr. Clover mistook his unusual skills for signs that he was a spy. Dr. Clover hid the scholars’ Poneglyph research, and Mousse left Robin convinced that he really could read books without opening them.

• Dr. Clover let Mousse into the Tree of Knowledge, where Mousse estimated the library held over 270,000 books by calculating its layout.
• Mousse ran his hand across the book spines, making Dr. Clover suspect he was inspecting Ohara on behalf of the World Government.
• Mousse flew on Big Head to reach the higher shelves, and Dr. Clover told the researchers to conceal their Poneglyph work and move their records into the underground chamber.
• Robin floated through the library on a scroll but had to get down when Mousse needed Big Head to reach higher books.
• Robin accused Mousse of pretending to read, so he had her choose a book and passage for him to recite, clearing up the misunderstanding.

Mousse continued memorizing Ohara’s library and learned that Nico Robin was being mistreated by her aunt and uncle. After Robin admitted she missed her mother, Mousse took her away on his flying scroll to buy her lunch.

• Mousse explained to Robin that their unusual abilities came from eating Devil Fruits, easing her fears about being a monster.
• Mousse called Perospero and said he would stay in Ohara for about a month to read its extensive library.
• Dr. Clover realized Mousse was likely a pirate from the Grand Line, not a World Government agent.
• Robin’s stomach growled, and Dr. Clover asked whether she had fought with her aunt and uncle again.
• Robin said she had not fought with Aunt Rosie and that she missed her mother.
• Mousse grabbed Robin, took her onto his flying scroll, and left the Tree of Knowledge to treat her to lunch.

Mousse brought Nico Robin to his seaside cave, where he shared homemade cake and sweets with her. After they talked about their families and loneliness, Big Head’s antics helped Robin smile again.

• Big Head flew Mousse and Nico Robin to a cave beneath the seaside cliff and set them down.
• Mousse gave Nico Robin homemade cake, and she eagerly ate it before nearly choking.
• Nico Robin asked about Mousse’s family, and he described his mother as difficult and said he had no father.
• Nico Robin realized Mousse’s treats came from his older siblings, and he explained that they cared for the younger children like parents.
• Big Head’s antics lifted Nico Robin’s mood, and she smiled again.

Mousse explained Big Head’s abilities to Nico Robin, then demonstrated his pistol marksmanship and reflected on why firearms suited his talents. He continued training as a gunslinger, having begun designing weapons for himself, while his physical strength had improved enough to handle their recoil.

• Nico Robin asked Mousse about flying inside Big Head and concluded that the enormous Homie was powerful.
• Big Head nodded in response to Robin, making her laugh, and Mousse defended himself by showing off his shooting.
• Mousse tossed two stones outside the cave and quickly hit both with his pistols, impressing Robin.
• Mousse reflected that his powerful Observation Haki and ordinary physical talent had led him to specialize in marksmanship.
• Mousse kept practicing and designing firearms after gaining the Book-Book Fruit, and his improved strength let him handle recoil more effectively.

Mousse discovered that Nico Robin’s Devil Fruit had greatly enhanced her physical potential and worried she could not escape future threats to Ohara without training. He decided to coax her into demonstrating her ability, offering to reveal his own power in return.

• Mousse fed Nico Robin pastries, then used Observation Haki and an arm-wrestling match to gauge her unusual strength and vitality.
• Mousse realized Robin’s Flower-Flower Fruit and strong mental power gave her greater potential than her untrained appearance suggested.
• Mousse worried that the altered conflict between the World Government and his family could make Robin’s escape from Ohara more dangerous.
• Mousse explained Devil Fruits to Robin after she asked why bathing weakened her, and she wondered if that could excuse her from chores.
• Mousse asked Robin to demonstrate her Devil Fruit, promising to reveal his own ability if she did.

Mousse tested Nico Robin’s Flower-Flower Fruit and discovered that damage to a created limb also injured her real body. While treating her wound, he recognized that his own indifference toward life made him rely on reason to restrain his actions.

• Nico Robin agreed to show Mousse her ability, then playfully touched his shaved head and retaliated when he stroked one of her created arms.
• Mousse persuaded Robin to create an arm so he could test whether it felt like her real body, then injured it with a finger jab.
• The created arm vanished, and an identical bloody wound appeared on Robin’s real arm; she angrily grabbed Mousse’s ear and told him she had made the arm disappear herself.
• Mousse concluded that Robin’s created limbs did not automatically vanish when damaged and considered how she might defend herself against stronger enemies.
• Mousse treated Robin’s wound, and she wondered at the contrast between his earlier roughness and his careful attention.
• Mousse realized that he felt little guilt for hurting Robin and that reason, rather than empathy, restrained his behavior.

Mousse reflected on how his upbringing had restrained his disregard for life, then learned a little about Nico Robin’s father and explained how his Devil Fruit power had transformed the Scroll. The chapter ended with Robin realizing that flying on the Scroll was safe because Mousse himself was not afraid of falling.

• Mousse finished bandaging Nico Robin’s wound and teased her after she pinched him.
• Robin mentioned that Grandpa Curator had said her father was brave, prompting Mousse to ask what she knew about him.
• Robin explained that she knew very little about her father, and Mousse imagined a story about the man’s origins, struggles, and marriage to Olvia.
• Mousse explained that Big Head’s strength came from his Devil Fruit power and showed Robin how he could transform the Scroll into a strip of paper that carried him.
• Robin questioned whether the Scroll should return to its original form and realized that she did not need to fear falling while riding it.

Charlotte Mousse explained Devil Fruits and the World Government’s restrictions on sailing to Nico Robin, helping her understand why people had mistaken her for a monster. As the sun set, Mousse reflected on the Celestial Dragons’ resistance to change and wondered why his conversation with Robin had made time pass so quickly.

• Mousse widened Big Head's scroll and showed Nico Robin the Auto-Drafting Machine, explaining that strange Devil Fruit powers existed.
• Nico Robin realized that people had misunderstood her because they did not know about the many miraculous things in the world, then asked why Ohara’s scholars had never explained Devil Fruits to the residents.
• Mousse guessed that the World Government discouraged people in the Four Blues from openly discussing Devil Fruits because knowledge of them could prompt more people to sail into the Grand Line.
• Mousse explained that unauthorized sailors were treated as pirates and described how restricting free navigation helped the World Government manage conscription and taxation.
• Mousse concluded that the Celestial Dragons preserved their rule by suppressing development rather than reforming their system.
• Mousse noticed the sun setting and wondered why time had passed so quickly while he spoke with Nico Robin.

Mousse took Nico Robin back to the Tree of Knowledge after spending the day with her, where they discovered Dr. Clover and Robin’s uncle had been searching for her. After Mousse apologized and took responsibility, Robin asked her uncle to let Mousse stay at their house.

• Mousse and Nico Robin rode Big Head back to the Tree of Knowledge so Dr. Clover would know she had returned safely.
• Dr. Clover and Robin’s uncle had searched for Robin after fearing Mousse had abducted her, and Robin worried that her uncle would punish her.
• Mousse apologized to Robin’s uncle and accepted responsibility for taking her out without letting anyone know.
• Robin’s uncle took her hand to bring her home, but Robin gathered her courage and asked if Mousse could stay with them.
• Mousse realized Robin was trying to help him and decided to support her request.

Mousse negotiated a month’s lodging with Nico Robin’s family and confronted Aunt Rosie’s attempts to overcharge and inconvenience him. He ended up sharing a bed with Robin, where his blanket-hogging habit caused trouble and prompted an embarrassing answer about marriage.

• Mousse offered Robin’s uncle money to rent a room, and the honest man agreed to take 80,000 Berries for the month.
• Aunt Rosie berated Robin and demanded 200,000 Berries from Mousse, but he threatened to leave, so she accepted the original price.
• Aunt Rosie tried to make Mousse sleep in Robin’s room, and he accepted so he could observe the girl more closely.
• Mousse rolled around in his sleep and took the blanket from Robin, then apologized when she scolded him.
• Robin asked what he would do when he grew up and married, and Mousse blurted out that he would find a formidable wife to stop him stealing the blanket.

Charlotte Mousse helped Nico Robin understand why her aunt mistreated her and reframed her mother’s absence as a sacrifice tied to Ohara’s forbidden research. Robin ended the conversation resolved to become a historian and learn where her mother had gone.

• Mousse explained that Robin’s aunt had reasons to resent caring for her but was still responsible for mistreating her, while Robin’s uncle lacked the authority to change the situation.
• Mousse suggested Robin’s mother bore responsibility for leaving her with relatives, prompting Robin to knock him down and warn him not to speak ill of her mother.
• Mousse told Robin a story about a mother who left her child to pursue a greater duty, and Robin insisted that the mother still loved her daughter.
• Mousse said Robin’s mother had likely left for the same reason and that her father had probably died because of it, connecting their fate to Ohara’s forbidden research.
• Robin realized Mousse did not know her mother’s whereabouts and resolved to become a historian and ask Grandpa Curator where her mother had gone.

Mousse increased his reading in Ohara, strengthening his Book-Book Fruit and testing Big Head’s speed while he stayed with Nico Robin. He realized that storing too many memories in the brain’s surface layer could slow retrieval, thought, and reactions.

• Robin’s cousin persuaded her mother to let Mousse eat breakfast for free, and Mousse reflected on the girl’s kindness toward him and the danger facing Ohara’s residents.
• Mousse read nearly twenty thousand books, strengthening his Book-Book Fruit and mental power, and concluded that reading itself drove the ability’s growth.
• Mousse tested Big Head and found its top speed exceeded seven hundred kilometers per hour, though he remained uncertain it could defeat opponents stronger than a Marine Rear Admiral.
• Mousse explained to Nico Robin that he had secured his remaining belongings in the cave, and their questions and conversation kept them both from sleeping well.
• Mousse realized that his memories were accumulating in the brain’s surface layer and slowing his ability to retrieve information and react.

Mousse reorganized his memories into layers and created an index, greatly accelerating his thinking and making even deeply stored information easy to retrieve. Meanwhile, negotiations between the World Government and the BIG Pirates stalled, and Mousse urged Charlotte Linlin not to replace Baron Tamago as negotiator.

• Mousse sorted his memories into five layers, placing core knowledge, summaries, important texts, original book contents, and unwanted or trivial memories at different depths.
• Mousse indexed his memories and found he could retrieve even encrypted information in under a minute, while his thinking became much faster.
• After Mousse spent more than half a month organizing his memories, Perospero told him the World Government's representatives had arrived in Totto Land, but negotiations remained deadlocked.
• Baron Tamago rejected the World Government's objections, arguing that Totto Land was stronger than Elbaf and that ending the war would free more Marine forces.
• Impatient with the stalled talks, Charlotte Linlin asked Perospero whether Tamago should be replaced, and Mousse urged her to keep him in place so the World Government would not take their replacement as a sign of weakness.

After CP9’s botched attempt to seize Elizabello II’s child, the king used the agents as hostages to negotiate with the Five Elders. He demanded help destroying the Flanders Kingdom in exchange for revealing the King's Fist, and the Five Elders debated how to respond.

• Mousse suspected the World Government was waiting to learn whether the King's Fist could help it negotiate with the Charlotte Family, but decided not to interfere while away from Totto Land.
• Spandine’s CP9 agents confirmed the Pudding Royal Family’s connection to the King's Fist, then tried to kidnap Elizabello II’s infant child to force him to reveal its secret.
• Elizabello II defeated CP9, took the agents hostage, and confronted the Five Elders, while Spandine’s actions undermined the kingdom’s trust in the World Government.
• The Five Elders spared Spandine and CP9 to preserve the possibility of negotiations, but Elizabello II demanded their help destroying the Flanders Kingdom in return for the King's Fist secret.
• The Five Elders objected to attacking an obedient allied nation until the bald Five Elder suggested sending Borsalino to help Elizabello II defeat it.

The World Government persuaded Borsalino to help the Pudding Kingdom destroy Flanders, but Garp’s test revealed that the King’s Fist was too difficult to use in battle. The failed attempt to gain the technique left the World Government facing peace talks with the BIG Pirates from a weaker position than it had hoped.

• The Five Elders failed to convince Borsalino to attack Flanders until Sengoku and Sakazuki persuaded him with promises of fewer reputation-damaging missions and three months of paid leave.
• Borsalino helped the Pudding Kingdom annex Flanders, expanding its territory and population, while the World Government promised it a Marine capital ship and weapons.
• Monkey D. Garp tested Elizabello II’s King’s Fist and found that its long preparation could not withstand battlefield interference.
• The Five Elders, Marine Admirals, and future Marine Admirals concluded that learning the King’s Fist would not help them defeat the BIG Pirates.
• Sengoku and Monkey D. Garp’s suspicions about Charlotte Linlin’s limits were confirmed, but the Five Elders recognized that the Charlotte Family’s combat strength required them to make concessions in peace talks.

Marine Headquarters lowered the rank requirement for officers to learn Haki, while negotiations ended in a treaty that greatly expanded the BIG Pirates’ influence in the New World. The World Government and the BIG Pirates agreed to a ceasefire under terms that granted Totto Land extensive territory and resources while placing limits on both sides’ military movements.

• Garp suspected the King's Fist training method could help develop Armament Haki, and the Five Elders approved lowering the Haki training requirement to Marine Headquarters colonel.
• Marine officers increasingly learned Haki, and its training methods and the secret of the King's Fist eventually spread among Grand Line pirates.
• The World Government agreed not to expand most of its New World Marine bases and allowed member nations there to join the BIG Pirates, greatly increasing Totto Land’s population and wealth.
• The World Government promised the BIG Pirates goods worth 30 billion Berries and an annual payment of 5 billion Berries while Charlotte Linlin demanded food-purchasing offices in countries such as Notis.
• The BIG Pirates agreed to return six warships, restrict the movements of Charlotte Linlin and five relatives, avoid facilities on the Red Line and Farol Islands, and notify Marine Headquarters before other members entered the Four Blues.

The World Government and Totto Land finalized terms for peace, including restrictions on BIG Pirates offices and an agreement concerning Elbaf. The treaty heightened the Whitebeard Pirates’ fears of a possible alliance between the Navy and Charlotte Family, and Marshall D. Teach urged Whitebeard to expand their territory.

• The World Government and BIG Pirates set limits on office strength and staffing, while allowing the World Government and Navy to hire office personnel for assistance.
• Baron Tamago promised that Totto Land would not attack or pressure Elbaf, and the World Government agreed not to obstruct exchanges between Elbaf and Totto Land.
• Totto Land agreed to pay Celestial Gold but remained barred from the Reverie and could no longer use a pirate flag; Perospero designed its new cake-themed flag.
• The treaty alarmed New World pirates, and Edward Newgate trained harder, held fewer banquets, and drank less as the Whitebeard Pirates prepared for possible conflict.
• Marshall D. Teach urged Whitebeard to exploit the Navy’s withdrawal from the New World by expanding their territory and testing Big Mom’s intentions.

Whitebeard and Charlotte Linlin reached an uneasy peace over Fish-Man Island, helping establish a three-way balance of power in the New World. In Ohara, Mousse rapidly advanced his Book-Book Fruit abilities but still could not manifest the Book World, so he postponed further experiments until he returned to Totto Land.

• Whitebeard brought Fish-Man Island into his sphere of influence, and Charlotte Linlin established a dessert-purchasing office there, allowing the Whitebeard Pirates and Charlotte Family to coexist peacefully.
• Marshall D. Teach concluded that staying with the Whitebeard Pirates gave him the best chance of finding the Dark-Dark Fruit.
• The Whitebeard Pirates expanded their influence across the New World, which formed a balance between Totto Land, the Whitebeard Pirates, and the Marines.
• Mousse finished reading the books in Ohara's public library before February and greatly increased his mental power and Book-Book Fruit abilities.
• Mousse discovered that Big Head could fly faster than sound, but he canceled the enhancement to avoid attracting attention.
• Mousse remained unable to summon the Book World and decided to wait until he returned to Totto Land before trying a new development approach.

During his final days in Ohara, Charlotte Mousse sought to learn archaeology so he could understand Poneglyphs, but Dr. Clover refused because he believed Mousse lacked respect for history. Mousse revealed his ability to transform a Poneglyph into a scroll, prompting Dr. Clover to teach him archaeology in exchange for examining it.

• Mousse reflected that Robin had grown significantly in mental strength, though the gap between them had widened, and he might soon leave Ohara without seeing her again.
• Mousse asked Dr. Clover to teach him archaeology rather than directly requesting help deciphering Poneglyphs.
• Dr. Clover refused and barred the other scholars from teaching Mousse, saying he saw no respect or love for history in him.
• Mousse criticized Ohara's scholars and revealed a blue-gray Poneglyph, then transformed it into a scroll before Dr. Clover could inspect it.
• Dr. Clover agreed to teach Mousse archaeology in exchange for a chance to examine the Poneglyph, and began explaining key research and interpretation techniques.

While Mousse studied archaeology on Ohara, a curious middle-aged visitor learned about Totto Land’s unusual customs and laws from an old resident of Candy Island. He was left wondering how the country punished children who broke the law.

• Mousse studied archaeology in the Tree of Knowledge as two weeks passed.
• On Candy Island, a middle-aged visitor struck up a conversation with an old man who had immigrated to Totto Land soon after its founding.
• The old man explained that Big Mom’s power prevented people from getting sick and kept food fresh throughout Totto Land.
• The visitor learned that punishments took lifespan, which was turned into Homies that retained the convicted person’s memories and could reveal wrongful convictions.
• The visitor asked whether children who broke the law also had their lifespans taken.