Chapter Summaries

Uchiha Yū fought on the outskirts of the battle after Nawaki was shaken by the horrors of war. His radioactive Fire Release and reputation as a poison ninja drove both Konoha and Amegakure ninja away, leaving him alone in a deserted stretch of the battlefield.

• Nawaki lost focus after seeing the carnage, and Uchiha Yū slapped him back to his senses and warned him that the war had only begun.
• Two Amegakure ninja tried to seize Uchiha Yū’s Sharingan, but Yū stopped Nawaki from intervening and struck one attacker with the Monstrous Strength Fist.
• Uchiha Yū countered the second attacker’s Water Release with a Great Fireball whose intense heat injured him and forced nearby ninja to retreat.
• Amegakure ninja recognized the radiation injuries as matching those suffered by Kimura Daishi and identified Yū as the poison ninja who had killed their frontline troops.
• Both Konoha and Amegakure ninja avoided the area around Uchiha Yū, who wondered whether he should keep fighting.

As Kirigakure reinforcements joined the battle, Orochimaru left Jiraiya and Tsunade to hold Hanzō and confronted the Mist forces. Uchiha Yū was targeted by the jōnin Hōzuki Sōkai and fled toward the battlefield’s center, using clones and fire to cover his escape.

• A Hyūga Branch Family ninja spotted Kirigakure reinforcements, and Raiga Kurosuki led them into Konoha’s battle zone.
• Orochimaru asked Jiraiya to hold out against Hanzō while he dealt with Kirigakure, and Tsunade released her Yin Seal to face Hanzō.
• Hōzuki Sōkai recognized Uchiha Yū as the poison ninja and attacked him to avenge Mishita Tanaka.
• Hōzuki Sōkai stabbed Yū, then fired Water Gun Technique bullets that Yū narrowly dodged with his Sharingan.
• Yū created shadow clones and used Phoenix Flower Jutsu to obscure himself as he retreated toward the battlefield’s center.

Uchiha Yū escaped Hōzuki Sōkai’s pursuit with Orochimaru’s help, then treated poisoned Konoha fighters as their forces broke through Amegakure’s defenses. Hanzō conceded defeat and named Jiraiya, Tsunade, and Orochimaru the Legendary Sannin, while Yū’s reputation as a Toxic Ninja began to spread.

• Hōzuki Sōkai chased Uchiha Yū until Orochimaru intervened and fought him off, forcing Sōkai to flee.
• Uchiha Yū observed Orochimaru’s battle, then withdrew to recover chakra and help treat wounded Konoha ninja poisoned by Ibuse.
• Konoha’s forces broke Amegakure’s defensive line, and Hanzō ended the fight after finding his allies defeated.
• Hanzō acknowledged Konoha’s victory and named Jiraiya, Tsunade, and Orochimaru the Legendary Sannin.
• Uchiha Yū witnessed the title spread and became known in the Ninja World as the Toxic Ninja.

Uchiha Yū stayed behind with Jiraiya to help care for Yahiko, Nagato, and Konan after Konoha’s campaign devastated their village. As the children slept, Yū questioned whether they could survive the shinobi world, and Jiraiya resolved to seek peace in his own way.

• Tsunade punched Uchiha Yū and Nawaki for their reckless actions on the battlefield.
• Jiraiya shared food with Yahiko, while Uchiha Yū stopped him from taking Tsunade’s food and recognized Nagato and Konan nearby.
• Yahiko asked Jiraiya to teach them ninjutsu, and Yū stopped Orochimaru from killing the children.
• Jiraiya chose to care for Yahiko, Nagato, and Konan, and Yū stayed behind with him while Orochimaru returned to his duties.
• Uchiha Yū asked Jiraiya whether helping the children was worth the effort, and Jiraiya said he would find his own path to peace.

Uchiha Yū and Jiraiya taught Yahiko, Nagato, and Konan while debating how peace could be achieved. After Nagato awakened the Rinnegan, Yū revealed that his eyes were part of a conspiracy and sent him toward a woman named Shan Juhua before returning to the warfront.

• Yahiko told Jiraiya that peace would come through people protecting one another, while Uchiha Yū said he wanted to unify the world through absolute strength and end the age of shinobi.
• Wandering shinobi raided the house while Jiraiya and Uchiha Yū were away, and Nagato awakened the Rinnegan after the attack killed everyone inside.
• Uchiha Yū detected and destroyed a White Zetsu hiding in a tree, then Jiraiya accepted Yahiko, Nagato, and Konan as his disciples.
• Uchiha Yū told Nagato that he was Uzumaki Nagato and that his Rinnegan was part of a conspiracy, then urged him to follow Yahiko’s path or seek a new conviction from Shan Juhua.
• Uchiha Yū asked Nagato to travel through the Land of Rivers to North Cape by the sea, then left to treat the wounded on the other fronts.

The Third Kazekage abandoned Sunagakure’s alliance with Konoha and planned to invade, while Hiruzen Sarutobi prepared to defend the village and took note of its rising ninja. After returning to Konoha, Uchiha Yū treated wounded soldiers and persuaded Tsunade to fund a blood-typing machine, leaving them ready to develop it together.

• The Third Kazekage and Chiyo decided Sunagakure would break its alliance with Konoha and join other villages in invading it for land and supplies.
• Hiruzen Sarutobi ordered Hatake Sakumo to hold back the enemy and sent Danzo and Root to assassinate them.
• Hiruzen reviewed reports on the Legendary Sannin, Ino–Shika–Cho, Fugaku, and Uchiha Yū, and felt confident in Konoha’s prospects.
• Uchiha Yū returned to Konoha and used a cautious transfusion and a Healing Technique to stabilize a wounded ninja at the hospital.
• Uchiha Yū proposed a blood-typing machine to prevent dangerous transfusions and share profits with Tsunade, who agreed to fund the project.

Uchiha Yū successfully tested his blood separator and proposed selling the machines to the great clans to fund Konoha and expand Qiming. As Sunagakure declared war and Tsunade prepared to send medical ninja to the front, they received word that Danzo had been seriously injured.

• Uchiha Yū completed the blood separator, and Tsunade watched it successfully separate blood serum.
• Uchiha Yū asked Tsunade to encourage villagers to donate blood and proposed selling expensive blood separators to the great clans under the Hokage's name.
• Tsunade agreed to the plan and urged Uchiha Yū to begin mass-producing the machines.
• Uchiha Yū asked Tsunade about the war, and she told him Sunagakure had officially declared war on Konoha.
• A messenger rushed in and reported that Danzo had been seriously injured.

Uchiha Yū learned that Danzo had returned from a costly infiltration mission with intelligence on Sunagakure, but had lost an arm. Tsunade led a group of medical ninja, including Yū, to the struggling front, where they found Konoha’s forces and medical teams in dire condition.

• Tsunade went to the Hokage’s office to treat the gravely wounded Danzo, while Yū stayed behind and reviewed the frontline casualty report.
• Danzo gave the Third Hokage intelligence about Sunagakure’s defenses and routes after revealing that his ANBU team had been killed and he had lost an arm.
• Tsunade saved Danzo’s life, and the Third Hokage assigned her to lead medical ninja to deliver the intelligence to Orochimaru.
• Tsunade warned the volunteers that the field hospital could be breached, then ordered them to prepare poisons to slow Sunagakure’s advance.
• Yū volunteered to make poisons, and the group gathered herbs before traveling to the front.
• Tsunade arrived to find Orochimaru’s forces repeatedly retreating, medical ninja killed in traps, and the wounded left lying on the ground.

Orochimaru assigned Uchiha Yū to prepare a poison-and-trap ambush in a canyon to halt Sunagakure's advance, while Hatake Sakumo was tasked with intercepting Chiyo's son. Yū assembled a team of sensory ninjas and began coordinating with Hatake Sakumo for the dangerous mission.

• Orochimaru told Tsunade and Uchiha Yū that Konoha's forces were suffering severe casualties and that Chiyo's son and daughter-in-law had joined the fight.
• Tsunade revealed that Danzo had assassinated the Kazekage and obtained intelligence, and Orochimaru ordered Yū to prepare a poisoned valley ambush and Hatake Sakumo to intercept Chiyo's son.
• Yū selected Hyūga Branch Family, Aburame Clan, and Inuzuka Clan sensory ninjas to track the enemy's numbers and arrival while chunin helped lay traps.
• Yū explained that the team would delay Sunagakure's force by filling the canyon with poison and traps, aiming to kill the entire vanguard.
• Hatake Sakumo met with Yū after receiving Orochimaru's plan and pointed out a route that Yū needed to watch.

Uchiha Yū led a Konoha force to prepare a poison ambush in a canyon, while Tsunade and Orochimaru questioned the village’s Will of Fire. Sunagakure’s Ueno Juri ordered Keiko and Kanna to block the canyon’s escape route as his troops prepared a frontal attack.

• Uchiha Yū departed with a group of chunin and sensory ninjas to set traps in the canyon.
• Tsunade and Orochimaru worried that Yū was being made to face an excessive danger and questioned the Will of Fire.
• Uchiha Yū assigned the Inuzuka, Hyuga, and Aburame ninjas roles in a plan to lure in Sunagakure’s forces and track them before releasing his deadly poison.
• Ueno Juri’s force discovered Konoha’s presence at the canyon, and he ordered Keiko and Kanna to block the enemy’s escape route.
• Ueno Juri prepared a frontal attack, intending for Keiko and Kanna to kill Konoha’s ninjas when they retreated.

Uchiha Yū’s canyon defenses stalled Sunagakure’s advance, but an elite jōnin broke through the traps and began driving toward the command post. Yū ordered his shinobi to retreat in an orderly fashion rather than face the powerful enemy directly.

• Inuzuka and White Wolf lured a Sand patrol toward the canyon, where explosive tags killed one shinobi and the survivors reported back to Ueno Juri.
• Ueno Juri learned that Konoha had planted traps throughout the canyon but remained determined to attack and seize resources.
• Uchiha Yū prepared the canyon defenses and held his chūnin in place as Sunagakure’s vanguard probed the entrance.
• A Sand jōnin used Wind Release: Great Sickle Weasel to destroy the falling rocks and clear a path for the advancing shinobi.
• Uchiha Yū recognized that the elite jōnin could overwhelm the traps and ordered his forces to retreat in an orderly fashion.

Uchiha Yū lured Sunagakure forces into the canyon while concealing his plan to unleash the Radiation Element. As the enemy advanced into position, Yū began releasing the deadly toxin, leaving the Konoha ninja expecting a historic massacre.

• Uchiha Yū ordered an Aburame jonin to use venomous insects to halt the Sunagakure raiding force while Konoha ninja carried the wounded uphill.
• The retreating Sunagakure jonin reported to Ueno Juri that most of the cliff traps had been destroyed, but Ueno Juri suspected an ambush and left half his forces behind.
• Ueno Juri led the remaining Sunagakure ninja up the canyon, while Uchiha Yū used a Hyuga Clan jonin's Byakugan to track their positions.
• After the Sunagakure troops entered the designated attack position, Uchiha Yū sent the nearby Konoha ninja away and began releasing vast amounts of radiation.
• The Aburame jonin said his insects had sensed the invisible force, tried to flee, and died, as the Konoha ninja anticipated a massive massacre.

Uchiha Yū’s radiation trap weakened the advancing Sunagakure force, whose desperate ninjutsu shattered the canyon and buried the attackers. Konoha counted the ambush as a major victory while the surviving Sunagakure ninja prepared to report the disaster to the Kazekage.

• Ueno Juri realized his unit had been poisoned, but masks failed to stop their bodies from weakening and ninja from falling to their deaths.
• Ueno Juri ordered a retreat, but the weakened Sunagakure ninja launched a suicidal barrage of Fire and Wind Style ninjutsu.
• The attacks fractured the canyon, and White Wolf rescued Uchiha Yū as the cliffs collapsed and buried the Sunagakure force.
• A Hyuga jonin used his Byakugan to confirm there were no survivors, and Uchiha Yū promised to report everyone’s contributions to Orochimaru.
• The surviving Sunagakure force argued over whether their comrades could be rescued, then ordered that the disaster be reported to the Kazekage.

The Third Kazekage learned that Ueno Juri’s vanguard had been devastated by poison and that Hatake Sakumo had killed two leaders, prompting Chiyo to demand permission to join the battlefield. Uchiha Yū returned to camp after his successful mission, and Orochimaru and Tsunade praised him as Konoha prepared its defenses.

• A commander reported to the Third Kazekage that Ueno Juri’s unit had been wiped out in a suicidal assault and that the bodies carried a powerful poison.
• A messenger revealed that two leaders had been killed by Hatake Sakumo, and Chiyo and Ebizo asked the Third Kazekage to let them go to the battlefield.
• The Third Kazekage approved Chiyo and Ebizo’s request, urged Chiyo to develop an antidote, and ordered the invasion to slow temporarily.
• Uchiha Yū returned to camp and told Orochimaru that his mission had succeeded, wiping out half of Sunagakure’s vanguard and buying time for Konoha to prepare.
• Orochimaru praised Uchiha Yū, while Tsunade congratulated him and punched him after he complained about her roughness.
• Orochimaru proposed sending ninja to defend the canyon, but Uchiha Yū said his poison still remained there and would keep harming the enemy.

Uchiha Yū’s poisoning of the Sand vanguard made him famous and earned him a major bounty, while Sunagakure offered a fortune for him to undo the poison. Orochimaru arranged for the poisoned shinobi to be brought to Konoha under a temporary ceasefire, leaving Yū to decide whether to treat them.

• Hatake Sakumo returned with the bodies of Chiyo’s son and daughter-in-law, and Orochimaru arranged to extract their memories.
• Konoha’s camp celebrated Uchiha Yū for wiping out half of the Sand vanguard, while Yū worried that Sunagakure would target him.
• Yū found himself at the top of the black-market bounty list, and Tsunade joked about trading his head for money.
• Orochimaru told Yū that Sand shinobi had offered resources to ransom the two bodies and an even greater price to reverse the poison.
• Yū refused to travel to Sunagakure, so Orochimaru explained that the poisoned shinobi would be brought to Konoha during a temporary ceasefire.

Orochimaru and Sunagakure agreed to a supervised treatment in exchange for supplies, as Uchiha Yū identified Chiyo as the poisoned expert. The treatment began at a Konoha camp, where Yū and Orochimaru found Chiyo among the gathered patients.

• Uchiha Yū explained that Chiyo’s prolonged exposure to his radiation ability had likely poisoned her, and Orochimaru agreed to treat her in exchange for Sunagakure’s concessions.
• Chiyo isolated herself and the other patients, while the Third Kazekage told her he had negotiated for Uchiha Yū to remove the poison.
• Uchiha Yū and Orochimaru prepared for the meeting as Hatake Sakumo guarded the site, and Yū judged Sunagakure would likely end the war rather than risk ruin.
• Geng Ji brought the patients and supplies to the agreed location, and Orochimaru led Uchiha Yū and guards to begin treatment.
• Uchiha Yū and Orochimaru found Chiyo at the center of the gathered patients.

Uchiha Yū removed the poison from Chiyo and the Sunagakure ninjas but refused to heal the lasting injuries, leaving Chiyo unable to return to the Second Shinobi World War. Chiyo then requested a private discussion with Orochimaru, and the chapter ended as Orochimaru read the Kazekage’s secret order.

• Uchiha Yū gave Chiyo and the Sunagakure ninjas ordinary pills and withdrew the radioactive substance from their bodies.
• Uchiha Yū told Chiyo that he was only responsible for detoxification and that her lingering injuries would keep her from the battlefield.
• Chiyo nearly attacked Yū, but Orochimaru and the Konoha ninjas intervened, and Chiyo ordered her people not to fight.
• Chiyo accepted that Sunagakure could not afford to continue the war and asked Orochimaru to discuss another matter privately, with Yū present.
• Tsunade worried that Yū was becoming involved in village politics too early and resolved to speak with him alone.
• Chiyo presented the Kazekage’s secret order, and Orochimaru reacted with shock after reading it.

Orochimaru and Chiyo discussed a secret plan for Konoha and Sunagakure to feign continued war while sending forces to the Land of Lightning, and Uchiha Yū carried the proposal to the Third Hokage. Orochimaru prepared for the plan to be refused and resolved to change Konoha’s corruption or destroy it.

• Chiyo explained that Sunagakure’s Kazekage had devised a plan to fool their enemies and promised Sunagakure would gain what it wanted if it succeeded.
• Orochimaru asked Uchiha Yū to assess the proposal, and Yū judged it mostly genuine while warning that Sunagakure might exploit Konoha’s troop movements.
• Orochimaru gave Uchiha Yū a secret letter and command token to deliver directly to the Hokage, while planning to stage a show of continued fighting with Sunagakure.
• Orochimaru began mobilizing shinobi as Uchiha Yū secretly left for Konoha, and Tsunade came to the camp asking about him.
• Orochimaru warned Tsunade that Danzo might target Uchiha Yū and argued that Yū needed to gain power to protect himself and influence Konoha.
• After Tsunade left angrily, Orochimaru reflected that Konoha was rotting and resolved to change it or destroy it.

Uchiha Yū returned to Konoha with Orochimaru’s intelligence about the Kazekage’s proposal, then clashed with Danzo before reporting to the Third Hokage. The Hokage and his advisors agreed to mobilize Konoha’s strongest clans to break the war’s stalemate, while Yū returned to the Uchiha compound and spoke with Uchiha He.

• Uchiha Yū hurried back to Konoha and used Orochimaru’s token to enter the Hokage’s office.
• Danzo warned Yū that he regretted refusing to join him, and Yū challenged Danzo’s authority as they passed in the corridor.
• Yū delivered Orochimaru’s intelligence to the Third Hokage, who asked him to wait while the advisors discussed the Kazekage’s proposal.
• Danzo proposed sending the Uchiha and other powerful ninja to the battlefield, and the Third Hokage approved a plan to concentrate Konoha’s strength while using genin and chunin as a diversion.
• Yū returned to the Uchiha compound and reminded Uchiha He that he had won their wager about becoming clan leader.

Uchiha Yū suspected Danzo was targeting the Uchiha Clan through a deployment order and helped Clan Head Uchiha He prepare a covert attack on Root. He then asked Orochimaru to transfer him to the Cloud Shinobi front alongside his clan.

• Uchiha He gave Yū a scroll of Uchiha Fire Release techniques and warned him not to grow arrogant.
• After an ANBU delivered the Hokage's order sending the Uchiha Clan to the Land of Lightning border, Yū and Uchiha He suspected Danzo was behind the deployment.
• Yū gave Uchiha He radioactive kunai to place near a Root base, intending to weaken Root's ninja without killing them.
• Yū told Orochimaru he wanted to transfer to the Cloud Shinobi front with the Uchiha Clan, and Orochimaru warned him that the Cloud Shinobi were stronger than the Sand Shinobi.
• Yū stood firm, believing that joining his clan was necessary to preserve his value and help ease the conflict between the Uchiha and the village.