Chapter Summaries

Boer used his magnetic powers to build a giant steel aircraft and flew Blake and Bella’s supplies to the miners at Iron Spine. After seeing the miners’ dangerous conditions and hearing how taxes, transport costs, and low ore prices kept them in poverty, Blake asked Boer to find them a path to survival.

• Boer transformed stored metal into a giant steel bird, loaded the supplies, and flew with Blake and Bella to Iron Spine.
• The miners received the supplies, while Revolutionary Army liaisons debated whether Boer’s aid was genuine or a noble’s conspiracy.
• Boer explored the mining area with Blake and used his magnetic sense to detect the ore beneath the mountains.
• Blake showed Boer the dangerous mines and explained that Bella’s father had died when a tunnel support collapsed.
• Blake described the miners’ hard labor, crushing taxes, costly supplies, and buyers who drove down ore prices, then asked Boer for help finding a way forward.

Aaron Boer spoke with Revolutionary Army soldier Hans Sieber about the movement’s goals and offered support for its cause in the Kingdom of Bernia. He arranged political, military, and economic aid, then invited Dragon to send someone to collect his promised token of goodwill.

• Aaron Boer summoned Hans Sieber from the crowd and asked him about the Revolutionary Army’s platform and resistance.
• Hans declared that the Revolutionary Army fought for freedom and equality, while Blake anxiously tried to stop him from revealing more.
• Aaron asked whether the movement sought to overthrow the World Government and end the Celestial Dragons’ rule.
• Aaron promised to open roads and outside connections for the mining district and told Locke Hall to drop charges against its residents, make the territory crown-controlled and tax-free, and prepare for a purge of opposing nobles.
• Aaron instructed Thatch to set aside retired weapons and ordered Roland to supply the mining district at cost.
• Aaron told Hans and Blake to give Dragon his regards and said Dragon could send someone to collect the promised token of goodwill.

Boer used his metal control to build ore chutes and raise a roadbed at the mining site, then raced to the Silver Capital after a Sea King attacked ships in the harbor. He killed the beast, ordered its remains displayed as a warning, and resumed construction of the road from the harbor toward the mines.

• Boer created two metal ore chutes and lifted a reinforced mountain road from the slope, impressing Blake, Hans, and the miners.
• Boer promised to extend the road to the Harvest Plains and the Silver Capital, then received Roland’s report that a large creature had attacked cargo ships.
• Boer fashioned a supersonic metal aircraft and flew to the harbor, where he pulled a wounded Sea King resembling a manatee from the water.
• Boer told Roland to distribute the creature’s meat and display its cleaned bones, while Roland realized Boer had arrived less than three minutes after the call.
• Boxi, who had controlled the Sea King with his Beast Tamer Devil Fruit, lamented its death as Boer identified him as a potential threat but chose to ignore him.
• Boer began extending the road from the harbor toward the mining district, while workers prepared the Sea King’s skeleton as a harbor landmark.

At the Divine Mind One Sword Style dojo, Ikeda Mokkei revealed that Thatch had sent two hundred blades capable of conducting Armament Haki well enough to become Pseudo-Black Blades. The discovery triggered a worldwide scramble for Aaron Ball’s blades, and the chapter ended with the World Economy News Paper amplifying the craze and drawing the world’s attention to him.

• Ikeda Mokkei told Hokushin Ichiteru that a blade sent by Thatch had cut a wild boar’s head clean off and turned into a Black Blade when infused with Armament Haki.
• Hokushin Ichiteru learned that all two hundred blades Thatch had sent shared the same unusual properties.
• The Marines began secretly seizing or buying Bernia’s standard-issue blades across the West Blue.
• A wandering swordsman used a Bernia blade to defeat a stronger opponent, spreading rumors that the blades could become Black Blades.
• Swordsmen and other factions fought over the blades as the craze spread across the Four Blues.
• Morgans published a sensational report identifying Aaron Ball as the blades’ maker and directing the world’s attention toward him.

The Happo Navy planned to bring Boer under its control, while Boer oversaw Bernia’s new salt refinery and sensed a powerful group approaching. He warned his allies to flee if he did not return, then headed for the port as the threat drew near.

• Chinjao ordered the Happo Navy to prepare an expedition to Bernia and proposed binding Boer to the family through marriage rather than abducting him.
• Boer praised Copperhammer and Hunter Winster for completing the salt refinery plans, which promised to challenge the nobles’ salt monopoly.
• Boer sensed Chinjao and several powerful companions racing toward Bernia, then warned Copperhammer and Hunter to escape to the East Blue if he was harmed.
• Boer embraced Elena, told her to pack valuables and flee if events turned against him, and left for the port.
• Boer warned Chloe and Allison to seek justice from the Marines if he died, then continued toward the gathering threat.

Boer fought off the Happo Navy as Chinjao came to recruit him, defeating Chinjao after incapacitating Caiyi and Boo. The Marines and Raymont arrived at the ruined harbor, where Boer braced for a new confrontation.

• Chinjao attacked Boer at the harbor, but Boer evaded his strikes and transformed into a blue, electricity-charged combat form.
• Boer knocked Caiyi unconscious with the Sunshine Gun and struck Boo with lightning, leaving both Happo Navy fighters unable to fight.
• Boer used his speed and magnetic-powered attacks to wear down Chinjao, then defeated him in a clash of Thunder Fist and Drill Dragon Drill Nail.
• Kizaru, Momousagi, Onigumo, and Raymont entered the ruined battlefield, and Kizaru remarked on Chinjao's defeat.

Boer fought Vice Admiral Borsalino to prove his strength after Sengoku changed the Marines’ orders. He exhausted his energy in a final surprise attack, and Borsalino appeared impressed but gave no clear decision about whether Boer would be taken to Marine Headquarters.

• Prince Locke Hall welcomed the Marines, but Borsalino said he had orders to bring Boer to Marine Headquarters or kill him if he resisted, then explained Sengoku had changed the order to a test of strength.
• Borsalino struck Boer with a Light-Speed Kick, but Boer’s armor and magnetic field redirected most of the impact into the ground.
• Boer led Borsalino away from Bernia and used magnetic tracks, metallic dust, and electrical attacks to evade and counter his light-based attacks at sea.
• Boer concealed himself beneath the sea, calculated Borsalino’s Observation Haki range, and trapped him briefly with a magnetic field before launching Dragon Ascension Sigh.
• Borsalino dodged Boer’s plasma projectile, which burst through the clouds, and Boer ended the fight by deactivating his armor and asking to stop the performance.
• Borsalino touched his singed hair and responded languidly, though his expression showed new respect for Boer’s strength.

After Boer and Kizaru returned from their battle, Prince Locke guided the Marine officers through Bernia’s industrial facilities while explaining Boer’s influence on the kingdom. Kizaru’s confidential report then assessed Boer as a strategic risk and recommended cooperation and surveillance rather than forced conscription.

• Locke invited the Marines to tour the Steel Heavy Industry Consortium, but Raymont’s coughing fit prompted him to steer them away from the salt refinery and toward the Metal Smelting Center.
• As the group traveled along the Metal Backbone, Locke described how Boer had built infrastructure and housing, while Gion and Onigumo questioned the costs and risks of his power.
• Boer and Kizaru rejoined the group outside the smelting center, where Kizaru called Boer terrifying and Boer joked about being crushed in their fight.
• Boer arranged for an engineer to lead the Marine officers through the facility, then left to prepare a banquet as Kizaru departed to report to Sengoku.
• Kizaru’s confidential report rated Aaron Ball a strategic risk, detailed his abilities and weaknesses, and recommended suspending forced conscription in favor of cooperation, oversight, and surveillance.

Boer negotiated with Chinjao by forging him a powerful spear that might let him break open the Jade Ice Bed and reclaim the Happo Navy’s treasure. In return, Chinjao agreed to leave Caiyi with Boer to teach him Armament Haki and secret techniques, while Boer promised custom weapons for the Happo Navy.

• Thatch explained to Chinjao, Boo, and Caiyi why he had not returned to his swordsmanship school, saying he could not abandon the brothers who depended on him.
• Boer told the group that Marine Headquarters had forbidden him from selling Pseudo-Black Blades and warned that the Marines might investigate the Happo Navy’s purchases.
• Chinjao revealed that Garp had flattened his pointed head, leaving him unable to break open the Jade Ice Bed that sealed his ancestors’ treasure.
• Boer discovered that Chinjao was skilled with spears and forged him a giant Knight’s Spear, which Chinjao’s Armament Haki turned black.
• Boer asked Caiyi to stay and guide his Armament Haki training, offering custom weapons for the Happo Navy in exchange.
• Chinjao agreed, then departed with Boo for the Flower Country to test the spear, while Caiyi remained with Boer.

Master chef Keller eagerly accepted Joel’s invitation to cook for a lavish royal banquet, where Aaron Ball hosted Marine officers and Caiyi with an extravagant feast. The gathering impressed the guests with Ball’s resources and abilities, while Gion considered whether he could become a stabilizing force in West Blue.

• Keller read Joel’s invitation, recognized the distinguished guests and rare ingredients, and closed his eatery to head to the palace.
• Prince Locke Hall seated Kizaru, Gion, Onigumo, Raymont, and Caiyi at the Private Club’s rooftop banquet.
• Ball welcomed the guests with floating washbasins and drinks before serving a lavish spread of dishes made with rare seafood and Sea King meat.
• Locke Hall revealed that Ball had personally caught three Sea Kings, prompting Kizaru and Gion to assess his strength and strategic value.
• The Marine officers enjoyed the feast, and the banquet became a quiet display of Ball’s power and resources in West Blue.

Boer sent the Marines away with a donation of twelve hundred blades and demonstrated his control over metal by catching and inspecting Gion’s famous sword, Kompira. After the warship departed, the encounter left him resolved to become stronger so he could control his own destiny.

• Boer donated twelve hundred blades to the Marines and promised Gion he would not sell Pseudo-Black Blades to any faction.
• Boer caught Kompira between two fingers when Gion threw it at him and used his magnetic power to refine its internal structure.
• Boer returned Kompira to its scabbard with precise control and offered Gion’s associates blade services in exchange for a cooperative relationship.
• Gion accepted the offer conditionally and said she might shelter Boer from unnecessary trouble if he behaved sensibly.
• After the Marines’ warship left, Boer admitted his strength was still insufficient and resolved to become stronger.

Boer met with Caiyi to verify his theory about Armament Haki and discovered that his Magnetic Sense could disrupt its formation in a localized area. He then used his findings to awaken Armament Haki himself on his first attempt, leaving Caiyi stunned.

• Caiyi admitted he had little teaching experience and explained that he had awakened Armament Haki after repeated beatings from an elder.
• Boer used Extrasensory Vision to study Caiyi's Haki and noticed a brief drop in cellular activity after Caiyi released it.
• Boer concentrated his Magnetic Sense over Caiyi's wrist, making the area numb and preventing Caiyi's Armament Haki from covering it until Caiyi forced the energy through.
• Boer concluded that electromagnetic interference could obstruct the bioelectric currents behind Armament Haki, creating a potential weakness in its defense.
• Boer compressed his Magnetic Sense around his body and guided his life energy into a full suit of Armament Haki armor on his first attempt.
• Caiyi called Boer a monster and lamented how easily Boer had succeeded compared with his own painful awakening.

Boer discovered how to mix electricity with Armament Haki and expanded his magnetic perception to fourteen kilometers, where he sensed Nico Robin aboard a passenger liner approaching Bernia. After identifying her, he arranged discreet surveillance and preparations for her arrival.

• Boer mixed electrical energy into his Armament Haki, found that a 25% ratio was stable, and discovered that a higher ratio and an independent electrical armor harmed his body.
• Boer used life energy to expand his magnetic perception from eight kilometers to fourteen kilometers and established the limits of his current range.
• Boer sensed Nico Robin aboard a passenger liner and watched her return to her cabin, where she wondered whether someone was following her.
• Boer asked Caiyi what he would do with a rare rose in a dangerous wilderness, then invited him to remain in Bernia while they awaited news from Old Chinjao.
• Boer called Roland and Thatch and ordered harbor security adjustments, non-contact surveillance of the passenger liner, and reception preparations.

Nico Robin arrived in Bernia and was unexpectedly welcomed by Boer with lavish gifts, protection, and access to historical records. After Boer killed two Cipher Pol agents who had pursued her, he declared that he wanted her as his lover, and Robin demanded to know why he had chosen her.

• Nico Robin completed an Underworld commission, changed her clothes, and tried to leave Bernia Port after noticing a special reception for a noble passenger.
• Two bodyguards stopped Robin and escorted her to a welcoming ceremony prepared by Boer, where she received 79 million Beli, jewelry, clothing-store shares, and promises of Marine protection and library access.
• Thatch and Roland presented Boer’s gifts and arrangements to Robin as two captured Cipher Pol agents were thrown onto the red carpet.
• Boer descended at the dock and killed the Cipher Pol agents with steel needles before welcoming Robin to his home.
• Boer told Robin that he wanted her as his lover, and Robin restrained him with her hands and demanded to know why he had chosen her.
• Boer freed himself from Robin’s grasp, removed her veil, and said that the “White Monster” and the “Black Demon” were a match made in heaven.

Nico Robin accepted Boer's offer to manage the Kingdom Security Company and Steel Heavy Industry Consortium while continuing her archaeological work. Though wary of trusting him, she chose to stay in Bernia under his protection and watch what he would do.

• At dinner, Boer introduced Robin as his lover and Chloe, Allison, and Elena as his women.
• Boer offered Robin the choice of managing two major departments or focusing on archaeology, and promised not to force her into anything.
• Robin agreed to try managing the departments, prompting satisfaction from Boer and complicated reactions from the other women.
• Alone in her room, Robin reflected on her years in hiding, Boer's protection, and the rare books he had provided for her research.
• Robin decided to stay as an observer and participant, then used her ability to watch Boer training in the Iron-Encased Basement as he smiled at the flower appearing in his Extrasensory Vision.

Boer defeated Robin at chess and then appointed her to represent him with full authority over the Kingdom of Bernia. As Donquixote Family officers Pica and Buffalo flew toward Bernia to capture Boer, he prepared to meet the approaching intruders.

• Pica and Buffalo argued as they flew toward Bernia to capture Boer, with Pica warning that Boer had combat strength comparable to a Marine Vice Admiral.
• Boer and Robin discussed ancient artifacts and Bernia's growing port power while playing chess in a carriage.
• Robin won their chess game with a carefully planned attack, and Boer agreed to buy her top-grade East Blue coffee.
• At the Steel Club, Boer introduced Nico Robin to Prince Locke and appointed her to handle all the kingdom's affairs in his place.
• Boer ordered Thatch and Roland to route intelligence and documents through Robin, then guided her into the head seat.
• Boer noticed Pica and Buffalo approaching and prepared to entertain the uninvited visitors.

Boer defeated Pica and Buffalo after they came to Bernia to bring him to Doflamingo, then told Doflamingo he was coming to Dressrosa. He used the Vivre Card to set off with the two captured subordinates as his guests.

• Boer detected Pica and Buffalo approaching Bernia and waited for them in a metal chair in the sky.
• Pica attacked Boer, then threatened to destroy his country, prompting Boer to strike Pica and Buffalo and leave them badly injured.
• Buffalo called Doflamingo and reported that Boer was far stronger than the Navy intelligence had claimed.
• Boer dropped Pica onto the harbor ground, took Buffalo's Den Den Mushi, and told Doflamingo he would come to Dressrosa shortly.
• Pica resumed fighting with his Stone-Stone Fruit, but Boer restrained him with electrified metal serpents.
• Boer took Buffalo's Vivre Card, secured both men in his metal aircraft, and departed for Dressrosa.

Aaron Ball reached Dressrosa at extreme speed and confronted Donquixote Doflamingo, demanding payment for returning Pica and Buffalo before challenging him. After their clash, Boer ended the fight and Doflamingo agreed to discuss matters more peacefully.

• Boer accelerated his aircraft to Mach 8 and arrived at Dressrosa, where Doflamingo had gathered his officers after learning that Pica and Buffalo had been captured.
• Boer smashed through the palace meeting room ceiling and returned Pica and Buffalo in metal cocoons, then demanded five hundred million Beli from Doflamingo.
• Boer challenged Doflamingo, and the two clashed with Conqueror's Haki, strings, metal threads, and magnetic force fields.
• Doflamingo unleashed his awakened strings and Sixteen Holy Bullets: God Thread, but Boer stopped fighting before the palace and kingdom were destroyed.
• Doflamingo dispelled his ultimate attack and agreed to speak with Boer in a more friendly way.

Boer and Donquixote Doflamingo negotiated a weapons partnership at the Royal Palace of Dressrosa, each seeking profit while testing the other's limits. After Boer foiled Doflamingo's attempt to use Sugar against him, they agreed to cooperate, and Doflamingo warned Boer that powerful enemies might hinder his rise.

• Doflamingo offered Boer a deal to sell Black Blades through the Donquixote Family and proposed a revenue split.
• Boer and Doflamingo agreed to arrange private commissions for famous swords using rare metals, then haggled over their respective shares.
• Doflamingo sent Sugar toward Boer, hoping her Hobby-Hobby Fruit powers would give him leverage, but Boer detected the threat and caught her in a metal cocoon.
• Boer revealed that he knew Sugar was a Hobby-Hobby Fruit user, rejected Doflamingo's trick, and returned her to Trebol.
• Doflamingo and Boer settled on a fifty-fifty partnership covering one Black Blade-level weapon and one famous-sword commission each month.
• Boer proposed expanding cooperation to his consortium's other products, and Doflamingo warned him about the World Government, the Marines, and the New World Emperors.

After Aaron Boer’s surprise attack on Dressrosa made him a serious concern to the world’s powers, he spent a private bath with Nico Robin easing her tension and discussing her work and archaeological research. He left her safely in her bedroom, where Robin accepted the possibility of becoming his woman.

• The World Economy News Paper reported that Aaron Boer had reached Dressrosa from the West Blue in forty minutes, challenged Donquixote Doflamingo, and settled for five hundred million Beli, prompting the world’s powers to take him seriously.
• Boer asked Robin how she was managing her new responsibilities, then transformed a metal brick into a warm floating board and carried her onto it when she said she was not ready for more.
• Boer soothed Robin with a gentle massage and reassured her that she did not need to shoulder every task; Robin kissed his hand and called him her future man.
• Boer promised to accompany Robin to ancient ruins and discussed her research into historical carvings and the Void Century, deepening their connection.
• Boer dried and carried Robin to bed, kissed her forehead and lips, and left; Robin privately decided that becoming his woman might not be so bad.