Arc 6Alliance and Bloodline Research

Roy formed an alliance with Kaido, established a research base, and stole equipment and scientists from Punk Hazard. After months of training and genetic research, Roy proposed using clones to fuse several bloodlines, then returned to Raijin Island with Moria while the project began in Wano.

  • Roy and Bullet defeated Jack’s attacks, then Roy negotiated with Kaido and secured an alliance between the Roy Pirates and the Beasts Pirates.
  • Roy claimed Shusui and a Mythical Zoan Devil Fruit in Ringo, while Yamato joined Roy’s training sessions and learned the Six Powers.
  • Roy, Bullet, and Kaido fought, and Roy proved his strength to Kaido before securing a research base, resources, and blood samples in exchange for training Kaido’s subordinates.
  • Roy and his allies raided Punk Hazard, stole research equipment and data, and brought captured scientists back to Wano to work with Dr. Gracia.
  • Roy and Kaido took their crews to Raijin Island, where Roy established gravity zones and guided them through months of training, including teaching Internal Forging.
  • Dr. Gracia reported progress on bloodline transplantation, and Roy, Kaido, King, and Moria examined experiments showing that direct transplants caused rejection or other severe effects.
  • Roy proposed using unconscious clones to fuse bloodlines with his own as the primary component, and Dr. Gracia calculated a theoretical success rate above ninety percent.
  • After Roy ordered the researchers to begin with the most conservative fusion plan, Kaido and King stayed in Wano while Roy flew back to Raijin Island with Moria.
Chapters 126–150 Vol. 2 Read

Ch. 126Onigashima

Roy and his companions reached Onigashima to speak with Kaido, who was away, and faced the Beasts Pirates guarding the island. Bullet effortlessly stopped Jack’s attack and sent him flying, leaving King and the pirates shaken as the confrontation began.

  • Roy used Observation Haki to locate Onigashima and told the others that Kaido was not in Wano.
  • Roy ordered Tesoro to take the Ark Maxim northeast toward Onigashima, ignoring the Kurozumi patrols.
  • The Ark Maxim arrived at Onigashima, where King, Queen, Jack, and other Beasts Pirates gathered after the alarm sounded.
  • Roy told King that they had come to speak with Kaido, and Jack attacked him with a giant sickle.
  • Bullet intercepted Jack’s strike with one punch, knocked the sickle away, and sent Jack flying; King caught him as the Beasts Pirates stared in shock.

Ch. 127Bullet Beat Up the King of Docking Ships

Roy arrived at Onigashima to discuss the Ancient Weapons and Lunarian secrets with Kaido, but fought Jack when Jack attacked Bullet. Roy’s group settled into guest quarters while Kaido, alerted to their arrival, vowed to return and confront Roy.

  • Roy told King he wanted to discuss the Ancient Weapons and the secrets of the Lunarian Tribe with Kaido, then asked for a quiet place to stay and intelligence on Wano Country.
  • Jack ignored King’s order to stand down and attacked Bullet, who defeated him with an Armament Haki uppercut and a crushing kick.
  • King agreed to arrange lodging but said Kaido would have to authorize the intelligence, and Queen ordered Jack taken for treatment while alerting Kaido.
  • Roy and his companions followed King into the skull-shaped building, and Kaido received a call about Roy’s arrival while fighting elsewhere in the New World.
  • King showed Roy’s group their guest quarters and warned them to stay away from the central keep, laboratory, and armory.

Ch. 128Black Blade Shusui

Roy and Tesoro traveled to Ringo to retrieve the Black Blade Shusui from Shimotsuki Ryuma’s grave. After taking the sword, Roy searched a nearby hut and discovered a hidden cavity in its wall.

  • Roy told Hawk Eyes to disguise himself and sent him to find clothes while the others stayed behind to train with Bullet.
  • Roy and Tesoro flew to Ringo, where Roy found Shusui before the towering tombstone in the graveyard and claimed it.
  • Roy suspected a Mythical Zoan fruit might be hidden near a hut but found the hut empty and dusty.
  • Roy detected an unusual wooden board in the hut’s west wall, and Tesoro sensed a small cavity with a latch mechanism behind it.

Ch. 129Human-Human Fruit, Mythical Zoan, Model: Onyudo

Roy and Tesoro found Shusui and a Devil Fruit that Roy identified as the Human-Human Fruit, Mythical Zoan, Model: Onyudo, then returned to Onigashima to wait for Kaido. As the crew prepared to remain there for three days, Jack woke up and vowed to get revenge on Bullet.

  • Roy and Tesoro discovered a hidden Devil Fruit in the graveyard and left with it and Shusui.
  • Roy confirmed the fruit was the Human-Human Fruit, Mythical Zoan, Model: Onyudo, and considered recruiting more crew members to eat his collected fruits.
  • The next morning, Hawk Eyes examined Shusui, called it an excellent Black Blade, and said he would go to Wano Country to test his swordsmanship.
  • King delivered breakfast and told Roy that Kaido would return in three days.
  • Jack woke up from his beating and swore revenge on Bullet as Page One and the other children mocked his defeat.

Ch. 130The Little Girl

King stopped Ulti from attacking him, ordered the young pirates to double their training, and warned them not to provoke the Roy Pirates until Kaido returned. Meanwhile, Yamato sought out Roy’s crew and introduced herself as Kaido’s daughter.

  • Ulti attacked King to defend Page One, but his Lunarian toughness left her dizzy and unharmed.
  • King ordered Jack to take the group to train with twice their usual workload and told them to avoid provoking the Roy Pirates until Kaido returned.
  • Jack, Page One, Ulti, and Maria discussed the Roy Pirates’ strength and King’s wariness as Yamato secretly listened.
  • Yamato entered Roy’s quarters, grabbed roast meat from the table, and excitedly asked whether the crew were pirates.
  • Bullet lifted Yamato by the collar, and she revealed that she was Kaido’s daughter and had heard Jack talking about the Roy Pirates.

Ch. 131Yamato

Yamato asked Roy to teach her how to become strong enough to defeat Kaido, and he agreed to train her in the Six Powers and under high gravity. She began training alongside Jack, Maria, Ulti, and Page One at the Roy Pirates’ training ground.

  • Yamato told Roy she had sneaked away because she wanted to get stronger and oppose Kaido, who destroyed things and forced her to do what she disliked.
  • Roy agreed to teach Yamato basic techniques at the training ground each morning, and Stella gave the hungry girl a plate of roast meat.
  • Roy introduced Yamato to Jack, Maria, Ulti, and Page One, then used Command: Halt! to stop the four when they rushed to intervene.
  • Roy transmitted knowledge of the Six Powers to Yamato and explained that the techniques would help build her foundation.
  • Roy covered the training ground with a high-gravity field, and Yamato, Jack, Maria, Ulti, Page One, and the Roy Pirates began training under the added weight.

Ch. 132Kaido Returns

Kaido returned to Onigashima and confronted Roy and his companions, attacking when Roy proposed a partnership with the Beasts Pirates. After Bullet stopped Kaido’s first strike, Kaido agreed to continue the discussion elsewhere and flew off with Roy and Bullet following him.

  • Roy sensed Kaido’s return, and Kaido landed on Onigashima and demanded to know where Roy and the others were.
  • Yamato defied Kaido and stood up for Roy and his companions, so Roy shielded him from Kaido’s intimidating pressure.
  • Roy said they wanted to discuss a partnership, but Kaido attacked him with Hassaikai.
  • Bullet blocked Kaido’s club with his fist and struck him back, damaging the training grounds in their clash.
  • Roy suggested they move the fight elsewhere, and Kaido transformed into a dragon and invited Roy to follow.
  • Roy sent Tesoro and Stella to protect their companions while he and Bullet followed Kaido; King stayed behind to watch Yamato.

Ch. 133Watching the Battle

Roy and Bullet tested their strength against Kaido on an uninhabited island, and Bullet revealed the power of his Mythical Zoan during their clash. Kaido remained eager to fight as he answered Bullet’s elemental attacks with an even heavier Thunder Bagua.

  • Kaido attacked Roy with Bolo Breath and a tail strike, but Roy deflected the flames and briefly restrained him with his mental power.
  • Bullet struck Kaido’s Azure Dragon form with a Haki-coated punch, sending him crashing into a crater before Kaido rose unharmed.
  • Kaido exchanged a Thunder Bagua with Bullet, then learned his name and challenged him to show the full power of his Mythical Zoan.
  • Bullet used White Tiger: Heaven-Splitting Claw to tear through Kaido’s Haki lightning and followed with Wind-Thunder Break, cutting Kaido’s arm.
  • Kaido roared and countered Bullet’s attack with Thunder Bagua: Heavy.

Ch. 134Dragon and Tiger

Bullet and Kaido fought in their Mythical Zoan forms, and Bullet revealed a powerful Wind Armament that impressed the Beasts Pirates. After the battle ended, Roy asked Kaido to discuss an alliance, but Kaido demanded to test Roy’s strength in a single move.

  • Bullet transformed into his full-beast White Tiger form, and he and Kaido clashed as a white tiger and an Azure Dragon.
  • Roy explained that Bullet’s White Tiger Fruit controlled wind and metal, while Kaido retained an advantage in a prolonged fight because of his awakened Zoan recovery.
  • Bullet combined wind, metal, and Haki into Wind Armament, then damaged Kaido in a brutal exchange before both fighters withdrew.
  • Kaido returned to human form, praised the battle, and agreed to consider working together if Roy proved his strength.
  • Roy drew Shusui and used Command: Sharpness, creating an aura that appeared to cut cracks into the air as Kaido prepared to meet him.

Ch. 135Cooperation

Roy demonstrated a space-cutting strike that wounded Kaido and temporarily prevented him from healing, then proposed a research partnership in Wano Country. Kaido accepted the idea of a base and resources but resisted providing himself and King as research subjects, while Roy argued that powerful figures carried hidden bloodline abilities.

  • Roy used Secret Art: Break to cut Kaido across the chest and block his regeneration with a lingering rule.
  • Roy removed the effect, allowing Kaido to heal most of the wound and leave a dark red scar.
  • Roy explained that Secret Art: Break could cut through concepts but drained mental energy and could not be used again quickly.
  • Kaido recognized Roy’s strength and asked how he wanted to cooperate.
  • Roy requested a research base in Wano Country, resources and seastone, and blood samples from Kaido and King in exchange for training Kaido’s subordinates and sharing research.
  • Kaido objected to becoming research material, and Roy cited the hidden bloodline powers of figures such as Whitebeard, Charlotte Linlin, Roger, Garp, and Rocks.

Ch. 136Bloodline

Roy explained his theory about the Lunarians’ origins and proposed using ancient Moon People technology to create powerful fighters, persuading Kaido to form a true alliance. The crews celebrated on Onigashima, while Roy planned to begin research in three days and ended the night looking out to sea.

  • Roy told King and Kaido that the Lunarians and Skypieans might descend from two branches of Moon People, split by opposing ideals.
  • Roy proposed finding Moon People technology to combine the strength of Kaido’s Oni bloodline with King’s Lunarian traits and create powerful fighters.
  • Kaido agreed to ally with Roy on the conditions that the research base remain under his supervision and Roy not interfere with Wano Country’s administration.
  • Kaido announced the alliance between the Beasts Pirates and the Roy Pirates, and the crews celebrated with a banquet on Onigashima.
  • Roy told Kaido he planned to start the research in three days and raised a cup with King before the banquet continued late into the night.
  • After most of the guests passed out, Roy walked to the edge of Onigashima and gazed at the distant sea.

Ch. 137The Doctor's Problem

Roy and Kaido discussed their ambitions, then Roy began building a new base on a floating island beside Onigashima. The base’s plans were set, but Dr. Gracia warned that a shortage of researchers and restricted equipment would hinder his work.

  • Roy told Kaido he wanted to uncover the world’s truth, break its shackles, and let those around him live as they wished, while Kaido described his vision of a world ruled by strength.
  • Roy reassured Stella that working with Kaido was advantageous and that they had preparations in place, then reflected on the high cost of his Secret Art: Break.
  • Roy found an uninhabited island, lifted it with psychic power, and settled it beside Onigashima as a new base.
  • Roy divided the island into research, living, harbor, and training areas, and Kaido ordered King to provide workers and craftsmen.
  • Dr. Gracia requested more researchers and explained that essential equipment was controlled by the World Government, prompting Kaido and King to note its restrictions.

Ch. 138Punk Hazard

Roy and his allies planned a swift raid on the World Government research base at Punk Hazard to steal equipment and recruit personnel for Dr. Gracia’s research. The raid began with Kaido, Bullet, and Hawk Eyes drawing the guards’ attention while Roy, King, and Tesoro infiltrated the research area.

  • Tesoro proposed stealing research equipment, and Dr. Gracia revealed that he had worked at the Punk Hazard facility and remembered its layout.
  • Roy planned a quick raid, assigning Kaido, Bullet, and Mihawk to distract the guards while he, King, and Tesoro targeted the core laboratory.
  • Dr. Gracia prepared a list of essential equipment and a map, while the crew made space in their storage bag and modified the Ark Maxim.
  • Roy, Kaido, King, Bullet, Hawk Eyes, and Tesoro traveled to Punk Hazard aboard the Ark Maxim and split into two teams.
  • Kaido, Bullet, and Hawk Eyes attacked the island’s defenses, while Roy used spiritual power to conceal himself, King, and Tesoro as they slipped toward the central research area.

Ch. 139Sakazuki

Roy and Tesoro raided Punk Hazard’s research area, seizing equipment, archives, and secret experimental samples for Dr. Gracia. As they moved the stolen materials toward the Ark Maxim, Sakazuki attacked them with a barrage of magma fists, and Roy called on Kaido to stop him.

  • Roy froze the researchers, found the facility layout, and sent Tesoro to collect equipment while he searched the archives and underground lab.
  • Tesoro loaded priority instruments into Pea’s storage bag as Roy gathered research documents and discovered culture chambers holding experimental samples below ground.
  • Roy tore open the elevator shaft and used psychic power to lift the samples, documents, equipment, and immobilized researchers toward the surface.
  • Tesoro blasted a hole through the research base’s dome, allowing the stolen materials to stream toward the Ark Maxim.
  • Sakazuki saw the materials being taken and fired magma fists at them, but Roy blocked the attacks with a psychic barrier and called to Kaido to stop him.

Ch. 140The Plundering Ends

Roy's crew and Kaido raided the Punk Hazard research base, took its equipment, data, samples, and personnel, and escaped aboard the Ark Maxim. Sakazuki reported to Fleet Admiral Kong that the Roy Pirates and Beasts Pirates had allied, warning that their raid suggested a larger conspiracy.

  • Roy used his mental power to coordinate with Kaido, who intercepted Sakazuki and fought him while the others removed the research base's valuables.
  • Roy ordered the retreat after confirming Bullet and Hawk Eyes had scattered the defenders and Tesoro had finished loading the Ark Maxim.
  • Kaido drove Sakazuki back and flew to the Ark Maxim, while Sakazuki abandoned pursuit after seeing the crew ready aboard the airship.
  • Roy piloted the Ark Maxim away from Punk Hazard and said the crew would lie low until the doctor's research strengthened them.
  • Sakazuki contacted Fleet Admiral Kong and reported that Kaido had covered the Roy Pirates' retreat, leading him to suspect the two pirate crews had formed an alliance.

Ch. 141Researchers

Sakazuki was ordered to remain on Punk Hazard while Kong arranged another pursuit of Roy and Kaido. Back in Onigashima, Roy gave Dr. Gracia the stolen research equipment, samples, and captured researchers, who agreed to work for him under his promised terms.

  • Kong told Sakazuki to assess the damage on Punk Hazard and prepare a report while he consulted the World Government about pursuing Roy and Kaido.
  • Three days later, the Ark Maxim returned to Onigashima with stolen equipment, incubation chambers, research materials, and captured scientists.
  • Dr. Gracia examined the haul and recognized the incubation chambers as evidence of the World Government's forbidden Lineage Factor experiments.
  • Roy offered the captured researchers a choice between joining Dr. Gracia's team or remaining imprisoned to protect the base's secrets.
  • Dr. Domir and the other researchers agreed to stay after Roy promised research freedom and protection from Kaido and King.
  • Roy assigned the researchers to begin work on bloodline transplantation, with Kaido, Moria, and King set to cooperate.

Ch. 142In an Orderly Manner

Roy finished overseeing the research base’s initial setup and arranged an expedition to Raijin Island to train the crews’ strongest members. The two pirate crews prepared to leave in three days, using the Ark Maxim’s appearances to misdirect the Marines while they traveled.

  • Roy reassured Kaido that the scientists would remain loyal and explained that freedom and research resources would keep them on the crew’s side.
  • Dr. Gracia and the pirates completed the research base’s laboratories, organized Punk Hazard’s seized data, and installed cultivation pods in cold storage.
  • Roy proposed training on Raijin Island, and Kaido agreed to bring Jack, Maria, Ulti, Page One, and Yamato alongside the Roy Pirates’ crew.
  • Yamato asked Roy to let him join so he could grow stronger and defeat Kaido, and Roy agreed on the condition that he obey orders.
  • Roy and Kaido set the departure for dawn in three days, leaving Queen to guard Onigashima and the research base while Dr. Gracia and technicians stayed behind.
  • Roy explained that the Ark Maxim would remain visible to the Marines to draw their attention as the crews set out for Raijin Island.

Ch. 143Return to Raijin Island

Roy and the Beasts Pirates sailed back to Raijin Island, where Roy planned to train everyone and help those who mastered Life Return learn Internal Forging. The ships reached the island, and the group prepared to enter its dangerous lightning zones gradually.

  • Roy and Kaido’s crews sailed from Wano toward Raijin Island, and Kaido ordered his young subordinates to train hard there.
  • As the ships neared the island, Roy demonstrated his improved Armament Haki and promised to guide those who mastered Life Return through Internal Forging.
  • Roy explained that the crews would acclimate in Raijin Island’s outer zone before advancing into more dangerous areas.
  • The crews saw Raijin Island’s barren terrain and its central pool of thunder, which remained largely unchanged despite Roy’s earlier battle with the Golden Lion.

Ch. 144Arranging the Training Plan

Roy brought his crew and Kaido’s group to Raijin Island to train amid its powerful lightning and gravity. He assigned Life Return practice to his crew, taught Six Powers and Haki training methods to four of Kaido’s subordinates, and established graduated gravity zones across the island.

  • Roy stopped the Ark Maxim and the fast ship near Raijin Island, then flew his companions ashore as Kaido carried his group in dragon form.
  • The newcomers reacted to the island’s lightning, while Tesoro and Kaido welcomed its energy and the others struggled to adjust.
  • Roy assigned his crew to adapt to the outer area and prioritize mastering Life Return, while deciding to teach Kaido’s subordinates training methods for the Six Powers and Haki.
  • Roy passed the techniques to Jack, Maria, Ulti, and Page One, who reacted with excitement as Kaido watched and questioned him.
  • Roy spread his Gravity Domain across Raijin Island, setting zones from one to twenty times normal gravity and telling everyone to choose a suitable area and train carefully.

Ch. 145Training on Their Own

Roy began training the Roy Pirates and their allies on Raijin Island, dividing them among zones of increasing gravity and lightning. Tesoro trained at the island’s lightning pool and sensed a lingering will within the ancient lightning.

  • Roy activated his Gravity Domain, and everyone struggled to stand under the combined pressure of gravity and lightning.
  • Savi instructed Stella, Enel, Pea, Charon, Moria, and Vera in the outer zone as they began training Life Return and adapting to the environment.
  • Jack, Ulti, Page One, Maria, and Yamato trained in the middle zone, using their different abilities and tactics to endure the conditions.
  • Roy, Bullet, Hawk Eyes, Kaido, and King trained in the inner zone, with Bullet clashing against lightning and Hawk Eyes listening to its paths.
  • Tesoro drew powerful lightning from the pool at the island’s core and sensed what seemed to be the lingering will of a previous Rumble-Rumble Fruit user.

Ch. 146Teaching the Internal Forging Technique

Roy trained to understand the world’s rules and, after six months, began teaching his crew the dangerous Internal Forging technique. He guided Savi through his first session, leaving him with a new way to strengthen his Haki through continued practice.

  • Roy trained in the fifteenfold gravity zone, refining his body, Haki, Fruit ability, and understanding of the world’s rules.
  • After six months, Roy gathered the crew and prepared to teach Savi Internal Forging, while Bullet worried about the risks.
  • Roy explained how to sense Armament Haki particles, merge them into the blood, and control them during accelerated circulation.
  • Roy used his mental power to guide Savi as he discovered the particles and began circulating them, enduring pain as they collided inside his body.
  • Roy ended the guided session and told Savi to remember the sensation and practice gradually, while Savi excitedly said his Haki felt alive.

Ch. 147News from the Seas!

Roy trained the Roy Pirates in Internal Forging while news of major events across the seas reached them. Dr. Gracia later reported a promising bloodline transplantation model, and Roy decided to return to continue the experiments.

  • Roy helped Savi and Tesoro learn Internal Forging, then taught the rest of the crew, while Vera was told to strengthen her physical foundation before learning it.
  • The Roy Pirates trained near Raijin Island for a week, and Vera began triple daily physical training under Stella's supervision.
  • Over the next half year, Roy and his companions trained as news spread of Roger defeating Golden Lion at Edd War, the Marines promoting Sakazuki, Borsalino, and Kuzan as Admiral candidates, and Byrnndi World being imprisoned.
  • Dr. Gracia called Roy to report that bloodline sequencing had revealed records of World Government transplant experiments and that his preliminary model had a theoretical success rate of seventy percent.
  • Roy learned that recipients needed exceptional physical strength and regenerative ability, then told Dr. Gracia to continue optimizing the process as he prepared to return.

Ch. 148Return to Wano Country

Roy, Kaido, King, and Moria returned to Wano Country to discuss Dr. Gracia’s bloodline transplantation research and improve its safety. At the research base, Dr. Gracia began showing Roy the experiments, ending with a test subject reacting violently to an Oni bloodline injection.

  • Roy proposed that he, Kaido, King, and Moria test the bloodline transplant themselves, while the others stayed on Raijin Island.
  • Kaido carried Roy, King, and Moria toward Wano Country in his azure dragon form, and Roy used his ability to increase their speed.
  • Roy and the others arrived at the expanded research base beside Onigashima, where Dr. Gracia welcomed them with news of further discoveries.
  • Dr. Gracia showed Roy the bloodline research and explained that the researchers had analyzed three genetic bloodlines and conducted simulated experiments.
  • Dr. Gracia played footage of clone K-019 receiving purified Oni bloodline essence, and the clone roared as the transformation took a sudden turn.

Ch. 149Bloodline Transplant Experiment

Roy and Dr. Gracia examined the dangers of transplanting Oni, Lunarian Tribe, and Moria's mixed Oni bloodlines, then discussed a safer way to combine them. Roy proposed using cloning technology to grow a vessel in which multiple bloodlines could fuse before its genes were extracted for transplantation.

  • Dr. Gracia showed experiments in which direct Oni, Lunarian Tribe, and Moria bloodline transplants killed their test subjects or caused severe mental problems.
  • Kaido, King, and Roy learned that the bloodlines' genetic rank suppression caused rejection, and that dilution only reduced short-term risks.
  • Dr. Gracia explained that even high-ranking bloodlines could clash inside a host, with a complete Lunarian Tribe transplant into Kaido carrying over a 40% rejection risk.
  • Roy proposed cultivating a vessel with cloning technology and implanting it with several bloodlines while it was still an embryo.
  • Roy suggested making his own bloodline primary, then extracting the mature vessel's fused genes for transplantation.

Ch. 150Cloning Technology

Roy and Dr. Gracia planned a cloning project that would fuse Oni, Lunarian, and mixed Oni bloodlines outside the body, with Roy’s genes as the primary component. The first embryos were set to be cultivated under strict safeguards, while Roy left the research base for Raijin Island and trusted the doctor to oversee the work.

  • Roy proposed using clones to carry out the dangerous bloodline fusion, and Dr. Gracia calculated that the theoretical success rate could exceed 90 percent.
  • Kaido, King, and Moria discussed the project, and Gracia outlined how the team would create and test the clones.
  • Roy required the clones to lack consciousness and pain perception, and King and Kaido agreed to provide security, with Queen assigned to help protect the base.
  • Kaido, King, and Roy supplied blood samples, and after three days Gracia presented several stable fusion patterns using Roy’s genes as the primary component.
  • Roy told Gracia to prioritize controllability and begin with the most conservative plan, while Kaido and King chose to remain in Wano Country.
  • Roy flew with Moria to Raijin Island, where he reassured Moria that the doctor was loyal and that the Roy Pirates could punish the Beasts Pirates if the alliance broke.
Arc 6 of 40
Arc 6 of 40