Arc 24Science and New Beginnings

Senju Chen expanded Konoha’s medical and technological programs while helping Yakumo master her dangerous power and reuniting Kakashi with Sakumo. As Naruto and Sasuke began school and the Public Security elites trained with new tools, the arc left Kakashi and Sakumo about to face Shisui and Itachi in a team match.

  • Senju Chen offered Konoha access to his limb-regeneration technology and established a Medical Department, drawing disabled villagers and eager matchmakers to the Senju residence.
  • Senju Chen visited Kurama Yakumo with Kurenai Yuhi and Anko, discovered her immense mental power, and helped her defeat Ido after Yakumo’s genjutsu overwhelmed the Kurama compound.
  • Senju Chen recruited Yakumo as a special observer and sent Public Security elites to his underground base for advanced training, where Kakashi reunited with Hatake Sakumo.
  • The Orochimarus guided the trainees through Tailed Beast cell transplants, and the survivors awoke with nearly twice their former power.
  • Naruto Uzumaki and Sasuke Uchiha started at the Ninja Academy, where they challenged each other to compete and Naruto stood by Sasuke after Iruka reprimanded them.
  • Senju Chen gave Yakumo a private studio and promised she could soon leave her room, while Hatake Sakumo trained Kakashi to fight with basic sword techniques and taijutsu.
  • The Public Security trainees tested Scientific Ninja Tools, and two months later Sakumo and Kakashi prepared to battle Shisui Uchiha and Itachi Uchiha in a team match.
Chapters 576–600 Vol. 6 Read

Ch. 576Scientific exchange?

Senju Chen revealed that his research team had developed reliable limb-regrowth technology and offered Konoha limited access to it. He proposed a scientific exchange to introduce science and Scientific Ninja Tools to the village, leaving the elders to consider the terms.

  • Tsunade identified Senju Chen as the person behind Maruboshi Kosuke's restored foot, and Chen explained that the treatment was science rather than Ninjutsu.
  • Senju Chen told Shikaku Nara that the treatment had a one-hundred-percent success rate under ideal conditions and negligible side effects with proper rehabilitation and checkups.
  • Senju Chen assured Hiruzen Sarutobi that his overseas research team owned the technology and offered to share its results with Konoha.
  • Senju Chen said his research base could provide Konoha with at most two hundred treatment slots each year.
  • Senju Chen proposed a scientific exchange in a few months to teach villagers about science and offer Scientific Ninja Tools for sale.

Ch. 577Senju Chen wanted to find someone to marry?

Senju Chen offered Konoha three modest conditions for his limb-regeneration project, and the village gave him full support as word of the technology spread. He was soon besieged by both patients and matchmakers, but escaped the introductions by spending Parent and Child Day with Anko and Kurenai Yuhi.

  • Senju Chen asked Konoha to create a hospital department for preoperative examinations and postoperative follow-ups, and the elders agreed to support his project.
  • Konoha provided Senju Chen with land and personnel, while news of his limb-regeneration technology drew disabled villagers to the Senju residence for treatment.
  • Families began introducing prospective partners to Senju Chen, believing a match could help them move up the treatment queue, and Tsunade urged him to entertain the visitors.
  • Senju Chen accepted Anko's invitation to celebrate Parent and Child Day so he could avoid the matchmakers.
  • Senju Chen walked through the busy village with Anko and Kurenai Yuhi, and Anko pulled him toward a shop selling a new dango flavor.

Ch. 578Parent-Child Day

Senju Chen learned that Kurenai Yuhi's gifted but frail student, Kurama Yakumo, had a talent for genjutsu and offered to examine her health. Kurenai agreed to take Senju Chen and Anko to visit Yakumo and deliver her a new drawing board.

  • Kurenai Yuhi bought a new drawing board for her student Kurama Yakumo, who loved painting and had poor health.
  • Senju Chen recognized Yakumo as a genjutsu prodigy whose powers could materialize illusions, and recalled the dangerous personality Ido hidden within her.
  • Senju Chen asked Kurenai Yuhi about Yakumo and offered to check her health when they visited.
  • Anko joined the plan, and Kurenai Yuhi agreed that they would go together to see Yakumo.

Ch. 579Kurama Yakumo

Senju Chen, Kurenai Yuhi, and Anko visited Kurama Yakumo at the Kurama compound, where Chen discovered that one of Yakumo’s paintings contained immense spiritual power. Yakumo warmly greeted Kurenai, while Chen realized he had found a uniquely powerful genjutsu talent.

  • Kurenai Yuhi led Senju Chen and Anko through the Kurama compound to Yakumo’s residence.
  • The visitors entered Yakumo’s room and found it filled with paintings, including unsettling scenes and monsters.
  • Senju Chen felt a powerful spiritual force pull at his consciousness when he looked at Yakumo’s painting of a storm and vortex.
  • Chen resisted the painting’s pull and realized that Kurenai Yuhi and Anko could not sense the force.
  • Kurenai Yuhi called to Yakumo, who turned, tried to stand, and nearly fell before Kurenai steadied her.

Ch. 580She Wasn't Too Weak, but Too Strong!

Senju Chen examined Kurama Yakumo and discovered that her frail body was being overwhelmed by her immense mental power. He explained the cause to Kurenai Yuhi and Anko, leaving them alarmed as he rejected sealing as the answer.

  • Kurenai Yuhi brought Anko and Senju Chen to visit Yakumo, giving her a drawing board and helping her make friends.
  • Senju Chen examined Yakumo and found that her body was fragile while her mental power was immense and growing.
  • Senju Chen told Kurenai Yuhi and Anko that Yakumo was not ill but too strong, comparing her condition to a Tailed Beast inside a kitten.
  • Kurenai Yuhi panicked, Anko fell silent, and Yakumo nervously listened as Senju Chen judged sealing and suppressing power to be foolish.

Ch. 581Two options

Senju Chen proposed strengthening Kurama Yakumo’s body and teaching her to control and release her immense mental power, then persuaded her with a vision of the freedom she longed for. As he recommended that she join his Medical Department, Kurama Unkai arrived and rejected outside involvement in her care.

  • Senju Chen explained that Yakumo needed a stronger body and guidance in harnessing her mental power rather than a seal that would eventually fail.
  • Senju Chen asked Yakumo if she wanted to leave her room, live freely, and use her powers, and she eagerly agreed.
  • Senju Chen proposed that Yakumo join his Medical Department as a special observer so he could monitor her treatment and study her abilities.
  • Kurama Unkai arrived with hostile Kurama Clan ninja and declared that the clan would handle Yakumo’s upbringing itself.

Ch. 582Kurama Yakumo's "Outburst"

Senju Chen confronted Kurama Unkai over how the Kurama Clan was treating Kurama Yakumo, but the argument drove Yakumo into despair. She unleashed a powerful, uncontrolled genjutsu that engulfed everyone in the room.

  • Kurenai Yuhi defended Senju Chen's intentions, but Kurama Unkai accused him of coveting Yakumo and dismissed Kurenai as her instructor.
  • Anko rebuked Kurama Unkai for driving away people trying to help Yakumo, and he ordered everyone to leave.
  • Yakumo blamed herself as she watched Kurenai Yuhi, Anko, and Senju Chen face rejection because of her.
  • Yakumo screamed for everyone to stop arguing and unleashed a mental storm that distorted the room into a deadly illusion.
  • Senju Chen tried to shield Kurenai Yuhi and Anko, while the genjutsu overwhelmed the Kurama clansmen and one began sinking into the transformed floor.

Ch. 583"Ido"

Senju Chen and the others were trapped in Kurama Yakumo’s nightmare-like genjutsu world, where her dark alter ego attacked them. Senju Chen unleashed overwhelming spiritual power to suppress the world and urged the real Yakumo to control her power, leaving the nightmare’s fate in his hands.

  • Kurama Unkai realized that Yakumo’s power could destroy everyone as a monstrous black version of her appeared and declared that they would play in her world forever.
  • The black Yakumo attacked with shadow arms and monsters, while Anko’s kunai and Kurenai Yuhi’s Genjutsu: Release had no effect.
  • Senju Chen protected Kurenai Yuhi and Anko, then released golden spiritual power that melted the monsters and forced the nightmare world to tremble.
  • Senju Chen spoke to the real Yakumo, urging her to control her power rather than be enslaved by it, and reached toward the giant blood-red eye.

Ch. 584Merging with "Ido"

Senju Chen cracked Ido’s control over Yakumo’s genjutsu world and urged Yakumo to take command, but Ido merged with her instead, greatly increasing its power. The merged Yakumo attacked Senju Chen with a concentrated scarlet pillar as he remained calm.

  • Senju Chen used golden light to crack Ido’s blood-red eye and told Yakumo that she was the world’s true master.
  • Ido charged into Yakumo’s consciousness, merging with her and strengthening its control of the genjutsu world.
  • The merged Yakumo revived countless blood-red eyes and unleashed beams that battered Senju Chen’s golden light.
  • Senju Chen calmly praised the merged Yakumo’s increased power and skill.
  • The merged Yakumo gathered its power into a scarlet pillar and fired it at Senju Chen.

Ch. 585Who didn't have a clone?

Senju Chen used a second self emerging from his shadow to overpower the fused Yakumo and erase Ido from her mind, ending the nightmare world. After Yakumo fainted, Kurama Unkai begged Chen to save her and pledged the Kurama Clan’s loyalty; Chen arranged for Yakumo to join his Medical Department as a special observer.

  • Senju Chen revealed a clone from his shadow, and the two of them overwhelmed the fused Yakumo’s crimson attack with a vast golden universe.
  • Senju Chen erased Yakumo’s nightmare world, separated Ido from her consciousness, and destroyed Ido before the genjutsu world shattered.
  • Yakumo fainted from spiritual exhaustion, and Kurenai Yuhi checked that she was breathing steadily.
  • Kurama Unkai and his surviving clansmen collapsed in fear, then Unkai bowed and begged Senju Chen to save Yakumo and the Kurama Clan.
  • Senju Chen reassured Unkai and proposed that Yakumo join his Medical Department as a special observer; Unkai immediately agreed.
  • Senju Chen considered Yakumo’s exceptional spiritual talent and imagined how powerful she could become with clone techniques.

Ch. 586The "Advanced Training Class" Sets Off

Senju Chen selected Kurama Yakumo’s world-constructing genjutsu as a future opportunity and sent the first Public Security Department group, including Kakashi Hatake, to three months of advanced training. In the Land of Rain, Kakuzu continued tracking the proxy wars as Akatsuki expanded its grassroots work.

  • Senju Chen discovered that Kurama Yakumo’s fused ability, Genjutsu: Self Space, could create and rewrite an independent spiritual world.
  • Senju Chen and Yamato gathered ten Public Security Department elites, including Kabuto Yakushi, Shisui Uchiha, Uchiha Itachi, and Kakashi Hatake, and sent them away for three months of advanced training.
  • Kakashi Hatake reflected on learning that his father was alive and on his hope that this had broken his supposed curse of misfortune.
  • Kakuzu reviewed the Land of Rain’s proxy-war losses and Akatsuki’s interceptions of supplies intended for Hanzo of the Salamander.
  • Kakuzu noted that Akatsuki avoided direct battles and continued building support among villagers through practical projects and literacy classes.

Ch. 587The ice-cold, loving father and the accountant

Kakuzu complained about the Akatsuki’s poverty while Hatake Sakumo received a message that revealed his son was in the Land of Waterfalls. Sakumo left to meet him, with Kakuzu warning him about danger on the way.

  • Kakuzu complained that the Akatsuki’s wars and public welfare projects left it reliant on the boss’s monthly funding.
  • A bird delivered a note to Hatake Sakumo, whose reaction showed Kakuzu that the message had deeply shaken him.
  • Hatake Sakumo told Kakuzu that he was going to the Land of Waterfalls to see his son.
  • Kakuzu was shocked to learn Sakumo had a son and fretted about the expense of raising a child.
  • Kakuzu warned Sakumo about the active organization called the Twins and the bounty on his head.
  • Hatake Sakumo thanked Kakuzu and disappeared into the rain.

Ch. 588The Medical Department's ribbon-cutting ceremony and grand promises

Senju Chen opened Konoha’s Medical Department and showed its leaders how medical equipment and sterile operating rooms could improve treatment alongside Medical Ninjutsu. He ended the tour by promising that Scientific Ninja Tools capable of changing warfare were also on their way.

  • Senju Chen welcomed Tsunade, Hiruzen Sarutobi, Utatane Koharu, and Mitokado Homura into the newly opened Medical Department.
  • Senju Chen explained that the department would create patient records and use advanced equipment to make examinations and diagnoses more accurate.
  • Senju Chen argued that medical equipment would empower Medical Ninjutsu rather than replace it, drawing Tsunade’s interest and the elders’ skepticism.
  • Senju Chen showed the visitors an operating room designed to reduce postoperative infections through sterile surfaces and air systems.
  • Senju Chen announced that a shipment of Scientific Ninja Tools capable of changing warfare was also being delivered.

Ch. 589The steel stamp of ideology and the tide of the times

Senju Chen revealed that his Scientific Ninja Tools could let Genin wield power comparable to Jonin, prompting the elders to envision a stronger Konoha. He explained to Tsunade that the greatest barrier to adopting the tools would be the ideological shock to ninja who had built their identities around years of training.

  • Senju Chen told Hiruzen Sarutobi and the elders that his medical equipment and Scientific Ninja Tools would arrive in a little over three months.
  • Hiruzen Sarutobi and the elder advisers left the Medical Department excited by the prospect of the tools strengthening Konoha.
  • Tsunade asked Senju Chen whether the tools could truly match Jonin and worried that they would make traditional ninja training pointless.
  • Senju Chen described how repeatedly firing tools could defeat a Jonin and undermine a trained ninja’s faith in the value of years of practice.
  • Senju Chen told Tsunade that resistance from people’s hearts, rather than technology or funding, would be the greatest obstacle to introducing Scientific Ninja Tools.

Ch. 590Technology breaks tradition and changes hearts

Senju Chen reassured Tsunade that Scientific Ninja Tools would raise ordinary ninjas’ capabilities while helping powerful ninjas grow stronger, and she pledged her support. A week later, Yamato led the Public Security Department’s first elite group to a hidden, technologically advanced base, where they were greeted by their department head.

  • Senju Chen explained to Tsunade that Scientific Ninja Tools would raise a ninja’s minimum strength without replacing the powerhouses who determined a village’s victories.
  • Tsunade accepted Senju Chen’s reasoning and promised to support him against future opposition.
  • Yamato led twelve Public Security Department elites, including Kabuto Yakushi, Shisui Uchiha, and Kakashi Hatake, through the rain-soaked border of the Land of Waterfalls.
  • Yamato opened a concealed metallic gate behind a waterfall and led the group through a bright passage into a vast underground base filled with holographic screens and moving puppets.
  • The stunned group heard their department head welcome them.

Ch. 591A tour of the experimental base for "advanced training"

Senju Chen’s clone and Yamato showed Konoha’s Public Security Department members the experimental base and its advanced equipment, astonishing them with its amenities and collection of Kirigakure’s legendary ninja blades. After the tour, Chen kept Kakashi behind, where Hatake Sakumo appeared and called his son’s name.

  • Senju Chen revealed that the body at the base was his clone and asked Yamato to lead the visitors on a tour.
  • Yamato showed the group the base’s accommodations, facilities, and Scientific Ninja Tools, while Kabuto greeted Orochimaru in the control hall.
  • The visitors discovered four of Kirigakure’s legendary ninja blades on display and learned the base had previously held all seven.
  • Senju Chen sent the group to rest, then asked Kakashi to stay behind.
  • Hatake Sakumo emerged, and the shaken Kakashi saw his father again as Sakumo called his name.

Ch. 592Father and son

Kakashi reunited with his father, Hatake Sakumo, and learned why Sakumo had faked his death and stayed away. Senju Chen then revealed that father and son would train together for three months.

  • Kakashi recognized Hatake Sakumo and broke down as they embraced after more than ten years apart.
  • Sakumo explained that Senju Chen had helped him fake his death and that he had gone to the Land of Rain with help from Chen and Orochimaru.
  • Sakumo apologized for leaving Kakashi to endure years of loneliness and self-blame, and Kakashi insisted that his father had always been his hero.
  • Sakumo thanked Senju Chen, and Kakashi embraced him in gratitude.
  • Senju Chen announced that Kakashi and Sakumo would both join the advanced training as students for the next three months.

Ch. 593In the Face of Strength, Your Uchiha Pride Was Worthless

Yamato led the Public Security Department elites to a biological laboratory, where the twin Orochimarus announced that their first training would involve transplanting Tailed Beast cells to triple their chakra reserves. After learning the procedure still carried a risk of death, the trainees weighed their fears against the chance to grow stronger and ultimately all agreed to proceed.

  • Hatake Sakumo left Kakashi and the others with a promise that they would appreciate the training arrangements and that Kakashi would receive another gift in three months.
  • Yamato brought the Public Security Department elites to a biological laboratory, where the twin Orochimarus revealed tanks of Tailed Beast cells.
  • Orochimaru told the trainees to transplant Tailed Beast cells and aim to triple their chakra reserves within three months.
  • Natsuki Uchiha objected on the grounds that the cells would defile the Uchiha bloodline, while Kabuto Yakushi asked about the risks.
  • The twin Orochimarus showed a failed experiment and explained that improved stabilizers had lowered the mortality rate to below one percent, though later transplantations would still carry risks.
  • Hatake Sakumo, Kakashi, Kabuto Yakushi, and Shisui Uchiha accepted the procedure, and the rest of the elites followed.

Ch. 594A different first day of school (Part one)

After enduring three days of agony, Kabuto Yakushi, Shisui Uchiha, Kakashi, and the others emerged with greatly increased chakra. In Konoha, Naruto Uzumaki and Sasuke Uchiha arrived at the Ninja Academy for their first day as Uchiha Fugaku and Uchiha Mikoto discussed Chen-kun’s coming education reforms.

  • Kabuto Yakushi, Shisui Uchiha, Kakashi, and the others survived the tailed beast cell integration and awoke with nearly twice their former power.
  • Shisui Uchiha tested his strength by unleashing an enormous Great Fireball that heated an alloy target, and Amado summoned everyone for examinations and records.
  • Naruto Uzumaki and Sasuke Uchiha argued over who was the older brother and challenged each other to compete at school.
  • Uchiha Fugaku and Uchiha Mikoto accompanied the boys to the Ninja Academy, where Fugaku explained Chen-kun’s plans for extensive reforms led by Uchiha teachers.
  • At the Academy gates, Fugaku and Mikoto sent Naruto and Sasuke inside, telling them to listen to their teachers and noting that Lord Hokage would address the students.

Ch. 595A different first day of school (part two)

Naruto Uzumaki and Sasuke Uchiha began their first day at the Ninja Academy, drawing attention from their classmates. After Tsunade gave the opening speech, Iruka warned his class that clan protection and good companions could not replace personal effort, glancing at Naruto.

  • Naruto Uzumaki and Sasuke Uchiha arrived at the Ninja Academy together, attracting the attention of parents and students, including Ino Yamanaka and Shikamaru Nara.
  • Naruto and Sasuke teased each other about who was the older brother and agreed to compete for first place at school.
  • Shizune woke the hungover Tsunade, who rushed to the Academy after realizing she was late for the opening ceremony.
  • Tsunade appeared at the Academy, delivered a speech about the Will of Fire, and dismissed the students to their classes.
  • Naruto and Sasuke were assigned to Iruka's class, where Iruka emphasized hard work over clan protection and glanced at Naruto.

Ch. 596Talking Back to the Teacher on the First Day of School

Sasuke challenged Iruka after interpreting his lesson as biased criticism of the Uchiha Clan and Naruto, and Naruto joined him when Iruka sent them into the hallway. Outside the classroom, the two argued over why they had stood up for each other and started competing to decide who was the big brother.

  • Iruka's remarks about relying on protection upset Naruto, and Sasuke stood to accuse Iruka of judging students without knowing their abilities.
  • Iruka ordered Sasuke to face the wall; Naruto volunteered to share the punishment, so Iruka sent both boys into the hallway.
  • Sasuke told Naruto the dispute concerned Uchiha pride, while Naruto said he had recognized Sasuke was defending him too.
  • Sasuke dismissed Naruto's explanation, but Naruto put an arm around him and promised to back him up at school.
  • Naruto and Sasuke began competing over who would learn the school's ninjutsu first and bickered about who was the older brother.

Ch. 597Kurama Yakumo's envy

Senju Chen comforted Kurama Yakumo as she envied the children entering the Ninja Academy, then brought her to a bright private studio he had prepared in the Medical Department. Yakumo accepted his promise that she would someday be free to live and learn like other children, and the chapter left her with a sunny place of her own and support for her daily care.

  • Senju Chen watched Naruto and Sasuke enter the Ninja Academy together and felt relieved that Naruto was no longer lonely.
  • Kurama Yakumo watched the children playing outside the gates with envy, and Senju Chen promised she would soon be free to run, study Ninjutsu, and paint.
  • Senju Chen pushed Yakumo's wheelchair to the Medical Department after they watched his elder sister's opening speech.
  • Senju Chen showed Yakumo a sunlit private studio with a view of Konoha, new painting supplies, and a place to rest.
  • Yakumo cried with happiness as Senju Chen told her medical ninja would care for her and that she could paint or go outside whenever she wished.

Ch. 598Father and son sparring

Senju Chen oversaw the Public Security Department’s efforts to replace key officials, while Hatake Sakumo trained Kakashi to control his newly increased power. Kakashi continued to struggle against his father’s superior technique.

  • Senju Chen received a report that Area A-3’s officials had been eliminated and ordered Captain Yamanaka Mizuta to secure Area A-4 within a month.
  • Kakashi attacked Hatake Sakumo with his enhanced Lightning Blade, but Sakumo evaded it and disarmed him in seconds.
  • Hatake Sakumo told Kakashi that his attacks wasted movement and chakra despite his increased power.
  • Kakashi tried again with an Earth-Style Wall and taijutsu, but Sakumo identified his flaws and struck the back of his neck with his sword’s spine.

Ch. 599A ticket to the future

Kakashi trained under Hatake Sakumo until he managed to wound him with a short blade, then learned that Senju Chen’s experimental technologies could reshape the Shinobi World. Hatake Sakumo said their training was preparing them to seize a ticket to the future and help change the existing order.

  • Hatake Sakumo told Kakashi to set aside Ninjutsu and wound him with a short blade within three months using only Taijutsu and basic sword techniques.
  • Kakashi endured months of sparring and learned to read his opponent, control his strength, and keep pace with his father.
  • Kakashi cut Hatake Sakumo’s arm during a spar, and Sakumo congratulated him on taking his first step.
  • Hatake Sakumo explained that Senju Chen’s experiments and tools could transform the Shinobi World, and that Chen intended to change its order.
  • Kakashi realized how far Senju Chen’s ambitions and preparations extended, while Hatake Sakumo urged him to work hard and live up to Chen’s trust.

Ch. 600High tech and hardcore tricks

After two months of advanced training, Kakashi, Sakumo, Shisui, and Itachi mastered new chakra-powered combat equipment and techniques. The chapter ends as the four prepare to begin a team battle.

  • Natsuki Uchiha watched Wrench use a Sonic Vibration Blade to split his Great Fireball Technique apart.
  • Shisui Uchiha used an Inertial Deflection Armor Belt to deflect a barrage of senbon and kunai without moving.
  • The Public Security Department trainees learned to use Chakra Landmines, individual drones, and Kamaitachi Backpacks.
  • Two months later, Sakumo and Kakashi faced Shisui and Itachi in a four-person team match.
  • The instructor started the battle as Kakashi and Sakumo prepared to fight Shisui and Itachi.
Arc 24 of 36
Arc 24 of 36