Arc 2Karma and the Front Lines

After leaving the panel world, Namikawa Yū returned to Konoha, gained a modified Karma, and became a Medical Ninja as the Third Shinobi World War escalated. He survived a dangerous mission, recruited Shanming Changjin, and became Namikaze Minato’s student, ending with a request to learn the Flying Thunder God Technique.

  • Namikawa Yū ended Kaguya and her sons’ confrontation, entrusted the Land of Ancestors to Hagoromo and Hamura, then returned to his original body in Konoha and spent his Reincarnation Points on enhanced origins and a modified Karma.
  • Namikawa Yū began training in Medical Ninjutsu with Yakushi Nonō, passed his early graduation examination by defeating Obito Uchiha, and joined Konoha Hospital.
  • As the Third Shinobi World War intensified, Namikawa Yū treated patients at the front and comforted Kakashi Hatake, then accepted an elite mission despite his age.
  • After his team was ambushed, Namikawa Yū used Karma to defeat Iwagakure ninja and transformed Shanming Changjin into a recruit for the Night Organization.
  • Namikawa Yū rescued Kurenai Yuhi and Hyuga Fu, returned to camp, and recovered while continuing to visit Kakashi and Kurenai.
  • Namikawa Yū discussed the war and Konoha’s political future with Namikaze Minato, who accepted him as a student and shared his ambition to become Hokage.
  • Namikawa Yū’s predictions about the war were confirmed when the Third Raikage died during Kumogakure’s failed invasion of the Land of Earth, and Minato trained him for half a year until he could match Jonin in many areas.
  • After demonstrating his progress with the Rasengan, Namikawa Yū asked Minato to teach him the Flying Thunder God Technique.
Chapters 26–50 Vol. 1 Read

Ch. 26On the Brink

Namikawa Yū granted territories to Hagoromo, Hamura, and their future children, prompting the brothers to suspect he was preparing for his final departure. They then confronted Kaguya over the God Tree’s danger, and the chapter ended as Hagoromo attacked her with his Rinnegan.

  • Namikawa Yū granted Hagoromo and Hamura the lands that had belonged to the Land of Them and the Land of Birds, and promised fiefs for Hamura’s future children.
  • Hagoromo warned Kaguya that the God Tree was absorbing too much Natural Energy and urged her to stop before it destroyed the world.
  • Kaguya accused Hagoromo of trying to force her hand, and Hagoromo said he and Hamura would stop her if she refused to change course.
  • Hagoromo revealed his Rinnegan, and Hamura awakened his Tenseigan as the brothers confronted Kaguya.
  • Kaguya offered to overlook their challenge if they obeyed her, but Hagoromo refused and launched Truth-Seeking Orbs at her.

Ch. 27Mother and sons clash

Hagoromo and Hamura fought Kaguya after she refused to stop, with Namikawa Yū watching under their agreement. Their combined strength began to overwhelm Kaguya, and Hagoromo prepared a decisive ocular technique as she weakened.

  • Hagoromo and Kaguya clashed in an uninhabited area, with their battle destroying mountains.
  • Hagoromo entered Six Paths Sage Mode, and Hamura activated Tenseigan Sage Mode before joining the fight.
  • Namikawa Yū watched without intervening, trusting their agreement that the winner would decide what happened next.
  • Hagoromo and Hamura's combat experience and teamwork pushed Kaguya into difficulty despite her powerful ocular techniques.
  • Hamura struck Kaguya with Golden Wheel Reincarnation Explosion, weakening her and depleting her chakra.
  • Hagoromo brought his Rinnegan's power to its limit and prepared an ocular technique.

Ch. 28The outcome

Namikawa Yū stopped Hagoromo and Hamura from sealing Kaguya, then brought the family together and revealed that he was leaving. He reassured them that they could manage without him and asked Kaguya to care for their children until he returned.

  • Hagoromo prepared to use Six Paths-Planetary Devastation, but Namikawa Yū appeared beside Kaguya and made him and Hamura abandon their attack.
  • Namikawa Yū reminded Kaguya of their agreement, and she accepted that she would not continue fighting Hagoromo and Hamura.
  • Namikawa Yū returned to the palace with Kaguya, Hagoromo, and Hamura, where Asura excitedly asked about their fight and Indra watched with concern.
  • Namikawa Yū told Hagoromo, Hamura, and Kaguya that he was leaving, assuring his sons they were ready to lead and asking Kaguya to get along with the children while he was away.

Ch. 29Arrangements before departure

Before leaving the Land of Ancestors, Namikawa Yū entrusted the country to Hagoromo and Hamura and asked them not to seal Kaguya away if they ever fought her. He met the Toad Sage, learned that his future could not be foreseen, and asked for Mount Myōboku’s senjutsu secrets.

  • Namikawa Yū told Hagoromo and Hamura to govern the country until he returned and to treat Kaguya peacefully if conflict arose between them.
  • Namikawa Yū asked to meet the Toad Sage, who said he could not see Namikawa Yū’s future and that his dreams no longer matched events.
  • Namikawa Yū explained that Hagoromo and Hamura would control the God Tree and manage its growth to protect natural energy.
  • Namikawa Yū asked the Toad Sage for a copy of Mount Myōboku’s senjutsu training secrets.

Ch. 30Return

Namikawa Yū secured a genuine sage inheritance from the Toad Sage, then prepared to leave the Land of Ancestors and promised Kaguya he would return. After spending several months traveling with Kaguya, Indra, and Asura, he crossed back to his original body in Konoha and prepared to check what he had gained.

  • Namikawa Yū asked the Toad Sage for a sage inheritance, and the Toad Sage agreed.
  • Namikawa Yū told Kaguya he had to leave, but promised he would return for her.
  • Namikawa Yū transferred authority over the Land of Ancestors to Hagoromo and Hamura, then traveled with Kaguya, Indra, and Asura.
  • After fifty years had passed on the panel, Namikawa Yū's essence left his body and returned to his original body in Konoha.
  • Namikawa Yū felt weak in his young body and prepared to inspect what he had gained.

Ch. 31Gains

After his reincarnation ended, Namikawa Yū spent his Reincarnation Points to increase his chakra and acquire a modified Otsutsuki Kaguya's Karma. With only 273 points left and no new reincarnation available, he stepped outside to begin another day.

  • Namikawa Yū learned that his reincarnation rewards had earned him 6,350 Reincarnation Points and chose the Life Origin and Spirit Origin abilities to increase his chakra.
  • He considered the danger of Otsutsuki Kaguya's Karma and asked the panel to sever its connection to Kaguya and improve its compatibility with his body.
  • Namikawa Yū spent 4,000 points to acquire the modified Karma, which appeared as a seal on his palm and could be hidden at will.
  • He saw that he had 273 points remaining and no reincarnations available, then opened the door and went outside into the morning light.

Ch. 32Namikawa Yū's peaceful life

Namikawa Yū settled into life at the Ninja Academy while carefully hiding how much his abilities had changed. He visited the orphanage director and asked for help learning Medical Ninjutsu so he could become a medical ninja and avoid the coming war’s front lines.

  • Namikawa Yū mingled with his classmates and kept his ninja aptitude from attracting attention.
  • Namikawa Yū visited Konoha's Orphanage, where the children and director welcomed him back.
  • Namikawa Yū reassured the old director that he was managing well at the Ninja Academy.
  • Namikawa Yū asked the director to help him learn Medical Ninjutsu so he could join Konoha Hospital as a Medical Ninja.

Ch. 33Yakushi Nonō

Namikawa Yū asked Kamikawa Sawano to help him find a way to study Medical Ninjutsu, and Sawano introduced him to Yakushi Nonō at the Orphanage. Nonō agreed to teach him, and after seeing his talent, she gently acknowledged that he carried worries despite his cheerful appearance.

  • Namikawa Yū told Kamikawa Sawano that he wanted to learn Medical Ninjutsu, and Sawano brought him to meet Yakushi Nonō.
  • Kamikawa Sawano explained Namikawa Yū's ambitions to Nonō, who agreed to let him visit and teach him the basics.
  • Namikawa Yū began visiting the Orphanage after Ninja Academy classes and helping Nonō with her work.
  • Nonō praised Namikawa Yū's chakra control and Medical Ninjutsu talent after he healed an injured squirrel.
  • Namikawa Yū and Nonō discussed the children's carefree lives and the worries that adults carried.

Ch. 34Applying for graduation

Namikawa Yū decided to leave the Ninja Academy as the Ninja World grew more dangerous and applied to graduate early. After passing the basic tests, he faced Obito Uchiha for the required combat examination.

  • Namikawa Yū treated injured children at the Orphanage and suspected Nonō was leaving more often on missions as the Ninja World grew tense.
  • Namikawa Yū told Teacher Akiya he wanted to graduate early, and Akiya took him to begin the examination.
  • Namikawa Yū passed the basic graduation tests and learned that Obito Uchiha would be his opponent in the combat test.
  • Namikawa Yū praised Obito for helping an old lady, and the flattered Obito promised to go easy on him before bursting into laughter.

Ch. 35Facing Obito

Namikawa Yū faced Obito Uchiha in a match, deliberately holding back despite his clear advantage. He defeated Obito and left his skill under the scrutiny of Hiruzen Sarutobi and Kakashi Hatake.

  • Obito charged Namikawa Yū, who evaded his attacks with a highly proficient Body Flicker Technique.
  • Namikawa Yū assessed Obito's fighting ability and continued the match at a pace that made it appear close.
  • Hiruzen Sarutobi arrived to watch, while Nohara Rin cheered for Obito and Kakashi noted that Namikawa Yū was holding back.
  • Namikawa Yū tripped Obito and held a kunai at his throat, winning the match.

Ch. 36An inquiry

Namikawa Yū passed his early graduation assessment and met Hiruzen Sarutobi, who praised his strength and gentle consideration for Obito. Yū requested to join Konoha Hospital as a Medical Ninja, and Hiruzen reacted with surprise.

  • Obito complained about losing, but Rin praised his performance, while Kakashi criticized his lack of training and left.
  • Namikawa Yū asked Kōi Akiya whether he had passed the assessment, and Kōi confirmed that he had.
  • Kōi led Namikawa Yū to meet Hiruzen Sarutobi, who questioned why Yū had prolonged his fight with Obito.
  • Namikawa Yū explained that he wanted to spare Obito embarrassment in front of Rin, improving Hiruzen's impression of him.
  • Hiruzen gave Namikawa Yū his forehead protector and explained that his assignment would come later.
  • Namikawa Yū asked to join Konoha Hospital and train as a Medical Ninja, surprising Hiruzen.

Ch. 37Hostilities began

Namikawa Yū joined Konoha Hospital as a Medical Ninja and learned that Obito had been injured defending Kakashi from people slandering his father, Konoha's White Fang. The Third Shinobi World War began, and as fighting intensified, Namikawa Yū treated a growing stream of casualties at the hospital.

  • Namikawa Yū asked Hiruzen Sarutobi to serve as a Medical Ninja, received his appointment to Konoha Hospital, and settled into his work.
  • Nohara Rin came to collect medicine for the injured Obito, who had fought people for maligning Kakashi's father, Konoha's White Fang.
  • Namikawa Yū reflected that war was approaching as tensions spread through Konoha.
  • The Third Kazekage disappeared during the conflict between the Land of Wind and the Land of Lightning, and the resulting escalation began the Third Shinobi World War.
  • Namikawa Yū treated patients at Konoha Hospital and noticed that the growing number of wounded showed the fighting was intensifying.

Ch. 38The despondent Kakashi

Namikawa Yū joined the front lines as a battlefield medic, where he secretly absorbed chakra from sleeping wounded ninja. He met the grieving Kakashi Hatake after Kakashi was brought back injured, and tried to comfort him over Obito and Rin’s deaths.

  • Namikawa Yū left for the front lines after failing to find Nonō at the Orphanage.
  • Namikawa Yū treated wounded ninja and demonstrated a technique that helped them fall asleep.
  • Namikawa Yū secretly used his Chakra Absorption Technique to drain chakra from sleeping patients without harming them.
  • Kakashi Hatake woke from a nightmare in the medical tent, and Namikawa Yū recognized him as the senior he had met before.
  • Namikawa Yū spoke gently to Kakashi about Obito and Rin, while Kakashi sat in silence with a Sharingan in his left eye.

Ch. 39The pattern behind the growth of Reincarnation Points

Namikawa Yū discovered that interacting with Kakashi Hatake accelerated his Reincarnation Point gains, and he began visiting him to test the effect. His routine as a battlefield doctor ended when Konoha ordered the eight-year-old Yū to fight on the front lines.

  • Namikawa Yū considered pursuing an Otsutsuki Body by combining Hashirama Cells with Indra's chakra to obtain the Rinnegan.
  • Namikawa Yū suspected that influencing prominent figures such as Kakashi Hatake increased his Reincarnation Points, and repeated visits to Kakashi confirmed the faster growth.
  • Namikawa Yū spent the next half month visiting Kakashi and secretly draining chakra outside work.
  • A medical department middle-aged man protested that eight-year-old Yū had been ordered to fight on the front lines, but the officer insisted that everyone could be sacrificed for Konoha.

Ch. 40Kakashi, Burdened with Conflicting Feelings

Namikawa Yū accepted a dangerous mission as Konoha prepared to attack, then said farewell to Kakashi and left him a photograph of himself with Obito. The next day, Yū assembled with his squad and discovered that Kurenai Yuhi was one of his teammates.

  • Konoha chose Namikawa Yū, an eight-year-old Medical Ninja, for an elite surprise-attack mission, and he accepted despite Murakami's objections.
  • Yū visited Kakashi and gave him a photograph of himself with Obito, asking Kakashi to place it by their memorial stones if he did not return.
  • Yū told Kakashi to keep living and bearing his burdens, then left; Kakashi was deeply moved, earning Yū 100 Reincarnation Points.
  • The next day, the squad leader assigned Yū to a team with the Byakugan-wielding Hyuga Fu and Kurenai Yuhi.

Ch. 41The One Who Stayed Behind

Namikawa Yū’s squad fell into an Iwagakure trap, and the badly wounded Hyuga Fu urged his teammates to leave him behind. Yū knocked Fu unconscious, sent Kurenai Yuhi away with him, and drew the pursuing enemy ninja toward himself.

  • Namikawa Yū apologized for staring at Kurenai Yuhi, then told his teammates he lacked combat skills and hoped not to slow them down.
  • The squad began its mission to infiltrate and destroy an Iwagakure stronghold, but an enemy trap forced them to split up and flee.
  • Hyuga Fu, badly wounded in the chest, asked Yū and Kurenai to leave him behind so he could cover their escape.
  • Yū used chakra to stabilize Fu, then knocked him unconscious and told Kurenai to escape with him.
  • Yū ran in the opposite direction to serve as bait, and several Iwagakure ninja surrounded him.

Ch. 42Karma Release

Namikawa Yū released part of Karma’s power to defeat the Iwagakure ninja who had surrounded him. He spared their leader after the man surrendered and began transferring a unique chakra into him.

  • An Iwagakure Jonin offered to spare Namikawa Yū if he defected from Konoha, but Namikawa Yū warned that the Iwagakure ninja were the ones in danger.
  • Namikawa Yū activated Karma, unleashing a terrifying presence and a surge of chakra despite the strain on his mortal body.
  • Namikawa Yū used Bone Rush to turn the leading ninja to ash, then quickly defeated the others.
  • Namikawa Yū offered the remaining Jonin a chance to surrender and gain a new power, and the Jonin laid down his weapon and knelt.
  • Namikawa Yū pressed his hand to the Jonin’s forehead and infused him with unique chakra, causing him intense pain.

Ch. 43The Karma Seal

Namikawa Yū tested his altered Karma by implanting a Karma Seal in Shanming Changjin, strengthening him and recruiting him into the Night Organization. After sending Shanming Changjin to infiltrate Iwagakure, Namikawa Yū considered Kirigakure and the Sand Village better targets for future action.

  • Namikawa Yū used his Karma to transform Shanming Changjin and planted a seal that could grow by drawing on Changjin’s chakra and life energy.
  • Shanming Changjin awakened with increased strength and chakra, approaching Elite Jonin level.
  • Namikawa Yū recruited Shanming Changjin into the Night Organization and ordered him to infiltrate Iwagakure and wait for a summons.
  • Shanming Changjin reported that Iwagakure was mostly loyal to the Third Tsuchikage, though some shinobi were dissatisfied with him.
  • Namikawa Yū judged Iwagakure stable and considered Kirigakure and the Sand Village easier targets, especially Kirigakure because of Obito’s future control of the Fourth Mizukage.
  • Namikawa Yū sent Shanming Changjin away, confident that the Karma Seal gave him control over the recruit.

Ch. 44Rescued

Namikawa Yū rescued Kurenai Yuhi and Hyuga Fu from an Iwa Ninja after Kurenai’s escape attempt failed. The next morning, Kurenai woke beside Namikawa Yū.

  • Namikawa Yū reflected that defeating Shanming Changjin had given him access to new ninjutsu, though activating Karma had depleted much of his chakra.
  • Kurenai Yuhi carried the unconscious Hyuga Fu through the forest, determined to escape and warn Konoha headquarters.
  • An Iwa Ninja ambushed Kurenai and knocked her unconscious while trying to capture her and Hyuga Fu alive.
  • Namikawa Yū appeared and killed the Iwa Ninja before he could take the two Konoha Ninjas.
  • Namikawa Yū carried Kurenai and Hyuga Fu away, and Kurenai awoke the following morning as Namikawa Yū told her she was safe.

Ch. 45Return to camp

Namikawa Yū returned to camp with Kurenai Yuhi and the unconscious Hyuga Fu after rescuing them from a Stone ninja, though he concealed that he had inflicted most of his own injuries. Kakashi met him at his lodgings and remarked that Yū’s wounds would take a long time to heal.

  • Namikawa Yū told Kurenai Yuhi he had ambushed and killed the Stone ninja who was taking her and Hyuga Fu away.
  • Kurenai Yuhi thanked Namikawa Yū and urged him to return to camp for treatment, and he agreed.
  • After several days, Kurenai Yuhi, Namikawa Yū, and Hyuga Fu reached camp, where the medical team took the two injured ninja for care.
  • The medical team leader protested that an eight-year-old Medical Ninja like Namikawa Yū should not have been sent on such a dangerous mission, but Yū said he had volunteered.
  • Murakami Se told Namikawa Yū to rest and return to the village after the war, and Yū went back to his lodgings.
  • Kakashi appeared beside Namikawa Yū’s lodgings, said he had recovered, and noted that Yū’s injuries would take a long time to heal.

Ch. 46Namikaze Minato

Namikawa Yū recovered from his injuries while the war moved toward its end, and Shanming Changjin adjusted to his new power and orders. When Yū visited Kakashi, he encountered a friendly blond man who recognized him.

  • Namikawa Yū and Kakashi discussed Kumogakure's retreat and the war's likely end, while Kakashi mourned Obito and Rin.
  • Kurenai Yuhi visited Namikawa Yū and told him that Hyuga Fu had woken up and wanted to thank him.
  • Shanming Changjin found that his chakra and healing ability had increased, then left camp to fight Kumogakure under new orders.
  • Namikawa Yū recovered enough to return to work and continued visiting Kakashi and Kurenai Yuhi to gather chakra and points.
  • Namikawa Yū entered Kakashi's quarters with medicine and met a smiling blond young man who asked if he was Yū.

Ch. 47The situation

Namikawa Yū met Namikaze Minato and predicted that the war would soon ease as Iwagakure secretly negotiated an armistice with Konoha and prepared to target Kumogakure. Minato came away impressed by Yū’s strategic insight.

  • Namikawa Yū recognized Namikaze Minato, and the two began talking while Kakashi was away.
  • Namikawa Yū predicted that the war would soon end, explaining that the Sand Village was weakened and Iwagakure had little to gain by continuing the fight.
  • Minato revealed that Iwagakure had secretly sent an envoy to negotiate an armistice with Konoha, though he warned that the agreement could be broken.
  • Namikawa Yū deduced that Ōnoki had arranged the secret armistice to conceal a trap for Kumogakure and predicted that the Raikage’s downfall would drive the villages apart.
  • Minato reconsidered his view of Namikawa Yū and recognized him as a rare strategic talent.

Ch. 48The key

Namikawa Yū explained how Kirigakure’s internal instability and losses would limit its role in the war, impressing Namikaze Minato with his strategic insight. He then argued that Konoha’s coming Hokage election would be decided away from the battlefield but won through battlefield achievements.

  • Namikawa Yū told Namikaze Minato that the defeat of the Seven Ninja Swordsmen of the Mist and Kirigakure’s internal divisions had upset the village’s balance of power.
  • Namikawa Yū explained that the Three-Tails incident had further distracted Kirigakure and left it with little capacity to continue fighting.
  • Namikaze Minato asked Namikawa Yū to assess Konoha’s situation and the approaching Hokage election.
  • Namikawa Yū said the election would be fought within Konoha, but battlefield heroism would determine who could win it.

Ch. 49The candidates

Namikawa Yū asked Namikaze Minato to become his student, and Minato accepted, seeing Yū as a promising ally. They discussed the race to become Fourth Hokage and agreed that Orochimaru was Minato’s only serious rival.

  • Namikawa Yū asked Namikaze Minato to teach him ninjutsu and accept him as a student.
  • Namikaze Minato accepted Yū as his student, recognizing his medical skill and strategic insight.
  • Minato asked Yū for his view of the competition to become Hokage and openly admitted his own ambition.
  • Yū said only Minato and Orochimaru were qualified candidates, and Minato confirmed that he had reached the same conclusion.

Ch. 50Half a year

Namikawa Yū and Namikaze Minato grew closer as they discussed Konoha and the war, and Minato trained Yū in ninjutsu over the following half year. After Yū mastered the basics of the Rasengan, he asked Minato to teach him the Flying Thunder God Technique.

  • Kakashi returned and found Namikawa Yū and Namikaze Minato talking warmly, then watched them both leave soon afterward.
  • Namikawa Yū and Namikaze Minato continued meeting and came to respect each other's abilities.
  • Namikaze Minato heard that Kumogakure's invasion of the Land of Earth had failed and that the Third Raikage had died covering his army's retreat, confirming Yū's prediction.
  • Over the next half year, Namikaze Minato taught Namikawa Yū ninjutsu, helping him improve until he could match Jonin in many areas.
  • Namikawa Yū used the Rasengan to destroy a training dummy, and Minato praised his progress.
  • Namikawa Yū told Minato he wanted to learn the Flying Thunder God Technique.
Arc 2 of 8
Arc 2 of 8