Chapter Summaries

Naruto and his allies completed a vast eighteen-floor Underground City, turning it into both a shelter and a monster-filled training dungeon. As Tobirama and Hiruzen Sarutobi followed Naruto through its eerie passageways, Tobirama questioned whether Naruto could be trusted.

• Naruto's Shadow Clones and his allies excavated an Underground City three thousand meters beneath the Shinobi Alliance's territory and connected it to several newly joined lands.
• Naruto divided the city into eighteen floors, reserving the first as a living area and filling the lower levels with increasingly dangerous monsters, traps, and treasure chests.
• Naruto left the eighteenth floor empty except for a Golden Apple marked with the Flying Thunder God technique, which would summon Naruto and Sasuke as the final bosses.
• Tobirama recoiled at the dungeon-like entrance and complained that the city was meant to be a shelter, not a prison.
• Tobirama asked Hiruzen Sarutobi whether Naruto was reliable, and Hiruzen reassured him that Naruto would not deliberately endanger everyone.

Naruto led the group into an underground replica of Konoha, which stirred nostalgia and admiration among the visitors. He left the meaning of the “Safe Zone” unexplained while they explored, as Sasuke suspected Naruto was hiding a scheme.

• The group passed through a long corridor and found an underground village that perfectly replicated Konoha, moving the Third Hokage to tears.
• Tsunade dragged Jiraiya toward a tavern, while Tobirama asked Naruto where the karaoke bar was and claimed he wanted to inspect the entertainment facilities.
• The Third Hokage noticed the gate was labeled “Safe Zone,” but Naruto brushed off his question and kept the zone’s purpose secret.
• Sasuke grew suspicious of Naruto’s cheerful evasiveness, while Naruto’s rules and monster guides remained hidden throughout the village.
• Might Guy challenged Rock Lee to run five hundred laps, and Kakashi headed for the movie theater as the others began exploring the village.

Naruto and Sasuke realized that the Underground City's floors might be designed as challenge stages, while Konohamaru persuaded the Third Hokage and Asuma to train with him. Sasuke confronted Naruto about the monsters on the second floor, leaving Naruto startled that he had guessed the secret.

• Sasuke suspected Naruto had turned the Underground City into stages for people to challenge.
• Naruto stopped Konohamaru from trying to team up with the First Hokage and fight through the city.
• Konohamaru persuaded the Third Hokage to train with him and asked him to bring Asuma along.
• The Third Hokage summoned Asuma, then Konohamaru hurried them toward the lower floor.
• Sasuke asked Naruto how strong the second-floor monsters were, and Naruto reacted with shock that Sasuke had figured out his plan.

Sasuke accepted Naruto’s reasoning about the Underground City and prepared to send Mitsuki into it, while Naruto encountered Neji, Tenten, and Rock Lee at Ichiraku Ramen. Neji sought advice on fighting the Second Layer’s Endermen, but Naruto refused to give him a strategy and sent the trio back with potions.

• Sasuke agreed that the Underground City’s dangers were manageable, called Itachi Uchiha for money and told him to return to the village, and lured Mitsuki with the promise of a game.
• Sasuke went to explore the Uchiha Clan Grounds while Naruto headed into Konoha to see what its jonin were doing.
• At Ichiraku Ramen, Naruto found Neji, Tenten, and Rock Lee, who had just returned from the Second Layer.
• Neji told Naruto that he was stuck against the Endermen and asked for advice, but Naruto refused to reveal how to defeat them.
• Naruto gave Neji, Tenten, and Rock Lee three potions, and Neji led the group back toward the Second Layer.

The Konoha jonin celebrated in the Underground City, grateful for the safe homes and abundant food Naruto had provided. Jiraiya and Tsunade praised Naruto, while the crowd’s attention left him embarrassed and uneasy.

• The drunken Konoha jonin enjoyed the Izakaya’s food and drink and celebrated the Underground City’s safety.
• Hayate Gekko thanked Naruto for creating a secure home and invited him to share a drink.
• Jiraiya leaped onto a table and proudly introduced Naruto as his disciple to the crowd.
• Tsunade praised Naruto, and the jonin pulled him into the Izakaya to celebrate.
• The jonin praised Naruto and talked about bringing their families to the Underground City, while Naruto struggled to smile under their attention.

Kakashi investigated the strange rules posted throughout Naruto’s Underground City and grew convinced that something was wrong with the place. After Naruto evaded his questions, Kakashi rushed to help the Third Hokage, who had collapsed in distress and angrily demanded to know what Naruto was doing.

• Kakashi found and recorded 121 rules posted around the village, including bizarre claims about nonexistent monsters.
• Naruto startled Kakashi, praised his careful investigation, and dismissed the rules as ordinary guidelines.
• Kakashi questioned Naruto about his intentions, but Naruto claimed he only wanted to make everyone stronger and left through a Light Gate.
• Kakashi heard Konohamaru and Asuma calling for help, then found the Third Hokage gasping in a corner.
• The Third Hokage gulped down Kakashi’s entire bottle of Blood Pressure Medication, recovered, and angrily complained about Naruto.

Naruto gathered Sakura-ge, Stark, Orochimaru, Itachi Uchiha, and Shisui Uchiha to plan how to simulate the outside environment in the Underground City, then left the work to them. Kakashi and the Third Hokage confronted Naruto over the dangerous monsters on the second floor, fearing ordinary people would die if they reached the living areas.

• Naruto asked his researchers and the two illusion specialists to devise a realistic outdoor environment for the Underground City.
• Itachi Uchiha and Shisui Uchiha proposed using Illusion Techniques to create a weakened version of Infinite Tsukuyomi, and Naruto ordered the group to finish before residents moved in.
• Naruto left the researchers to work and headed toward the Uchiha Clan Grounds, while Sakura-ge reminded the others that he and Sasuke still had to deal with the Sage of Six Paths.
• Kakashi and the Third Hokage blocked Naruto and demanded to know why the Underground City's second floor contained monsters.
• The Third Hokage condemned Naruto for making the shelter too dangerous for ordinary people, while Konohamaru and Asuma watched from around the corner.

Naruto explained that the Underground City would force people to grow stronger before invasions from other worlds, while offering several paths for survival. The Third Hokage and Kakashi accepted his reasoning and asked how the plan would work.

• Naruto kicked Konohamaru aside and reassured him that the Third Hokage was not about to die.
• Kakashi asked Naruto what he planned to do about the coming invasions, and Naruto admitted that protecting the whole Shinobi World would be difficult.
• The Third Hokage woke up and realized Naruto intended to use the threat of monsters to push people to become stronger.
• Naruto explained that people could survive by hiding, becoming shinobi, joining the Church of the Mechanical God or the Scientific Truth Society, or awakening as a Death God.
• Kakashi gave the Third Hokage Blood Pressure Medication and asked Naruto to explain the Underground City so they could seek solutions.
• Naruto said weapon stalls from the Church of the Mechanical God and the Scientific Truth Society would open in the Underground City, where people could use firearms and mech armor to fight.

The Third Hokage and Kakashi prepared to move the Shinobi World’s population into the Underground City and impose a night curfew before the coming Monster Siege. At the entrance, Naruto and Sasuke were kept out of sight so they would not frighten the arriving residents.

• The Third Hokage and Kakashi decided to keep the Underground City training plan secret for now and prepare to move people inside.
• Kakashi told the Third Hokage to arrange a curfew, while noting that the Church of the Mechanical God and the Scientific Truth Society would help maintain order.
• The Third Hokage asked Kakashi to change the village entrance sign from “Safe Zone” back to Konoha.
• Naruto and Sasuke waited in a corner while Temari and Shikamaru guarded the entrance with twenty towering mechanical fighters.
• Naruto and Sasuke complained that Shikamaru would not let them greet the arriving clans because he thought they would scare people away.

Nagato concealed Amegakure’s ruined state from Naruto and refused his invitation to the Underground City, insisting Akatsuki was thriving. Meanwhile, Shikamaru began issuing identity tokens to the people gathered at Naruto’s shelter, and Hiashi’s token displayed the code 121.

• Nagato answered Naruto’s call while Kisame remained tied to a cross with a sock stuffed in his mouth.
• Naruto asked whether Amegakure was safe, and Nagato falsely assured him that Akatsuki was doing fine.
• Naruto invited Nagato to the Underground City shelter, but Nagato refused and claimed the village and Akatsuki could handle any crisis.
• Nagato whipped Kisame after declaring Akatsuki was thriving, then ended the call before Naruto could persuade him.
• Naruto dismissed Sasuke’s accusation that he was screwing over Nagato and insisted he was making Akatsuki stronger.
• Shikamaru instructed the gathered people to collect identity tokens, and Hiashi followed the wrist-verification instructions to reveal the code 121.

The Underground City delighted the villagers, and Tobirama and others praised Naruto for creating it while the Third Hokage and Kakashi struggled to hide the truth. Kakashi tried to impose an early curfew, but the villagers ignored his announcement.

• The newcomers admired the Underground City, and Chiyo and the old Sunagakure ninjas were moved to see a place like the village they remembered.
• Tobirama praised Naruto's work, prompting Jiraiya, Tsunade, and others to recall Naruto's accomplishments while the Third Hokage and Kakashi grew uncomfortable.
• The Third Hokage left Kakashi behind, claiming he needed to check on Konohamaru.
• Jiraiya asked why Kakashi looked so worn out, but Kakashi told him to keep drinking and walked away.
• Kakashi posted a rule in Konoha Loving Family requiring everyone to return home after six o'clock, but the announcement received no likes and the villagers ignored it.

Naruto and Sasuke visited Orochimaru’s base, where Ōtsutsuki Isshiki was being forced to contact his clansmen. Isshiki reported that he had found several of them, and Naruto eagerly sent him back to work.

• Naruto and Sasuke chased each other through Orochimaru Base after emerging from the Underground City.
• Sakura-ge’s statistics showed that the black cubes had deliberately targeted factories, so Kakuzu began building factories underground with Orochimaru.
• Jugo shocked Ōtsutsuki Isshiki for failing to complete his daily communication records while Kimimaro watched.
• Naruto and Sasuke arrived, and Jugo handed Naruto the Electric Baton before leaving with Kimimaro.
• Isshiki told Naruto that he had adjusted the communication frequency and found several clansmen, and Naruto ordered him to get back to work.

Isshiki tried to lure Momoshiki with a claim that Divine Trees could be planted repeatedly on one planet, but Momoshiki doubted him and kept calling back. Naruto had Isshiki leave him waiting while Kimimaro showed the group Orochimaru and Kabuto’s Divine Tree simulation.

• Momoshiki disbelieved Isshiki’s claim about repeatedly planting Divine Trees and angrily demanded to know who was speaking.
• Isshiki panicked when Momoshiki pressed him for proof, while Naruto gestured for him to hang up.
• Momoshiki grew curious about whether the caller was really Isshiki and repeatedly redialed the communicator.
• Naruto told Isshiki to leave Momoshiki waiting, then asked Jugo about Orochimaru’s Divine Tree simulation.
• Kimimaro confirmed that Orochimaru and Kabuto had modeled the Divine Tree’s growth and fruiting, then showed the animation to Naruto and Sasuke.
• Naruto warned Sasuke not to learn the technique after noticing Kimimaro’s receding hairline.

Naruto and Isshiki tricked Momoshiki into believing that Isshiki had found a way to cultivate multiple Divine Trees, luring him toward the Shinobi World. After Momoshiki set off, Naruto ordered Kimimaro and Jugo to untie Isshiki.

• Naruto, Sasuke, Kimimaro, and Jugo prepared fake photos of Isshiki posing before three Divine Trees.
• Isshiki suggested sending Momoshiki Tailed Beast Chakra to make the deception more convincing, and Naruto told him to call him “sir.”
• Naruto infused a communicator with Tailed Beast Chakra, and Isshiki sent the Chakra and photos to Momoshiki.
• Momoshiki believed the evidence, eagerly called Isshiki, and flew toward the Shinobi World after receiving the location.
• Naruto praised Isshiki for helping the plan and ordered Kimimaro and Jugo to untie him.

A month into Blocks Rain, the Shinobi Alliance struggled to shelter its growing population while Ōnoki and the Fourth Raikage’s people endured repeated sieges outside. Kurotsuchi urged Ōnoki to join the Alliance, but he and the Raikage regretted refusing Haruno Sakura’s earlier offer as they faced another uncertain future.

• The Shinobi Alliance suffered heavy losses as Kakashi’s Tent Plan helped manage the slow transfer of people into the Underground City, while Tobirama, Tsunade, and Jiraiya returned to work there.
• The Fourth Raikage and Ōnoki evacuated their people from an incoming Blocks Rain, using Killer B’s Tailed Beast Chakra and Ōnoki’s ninjutsu to help them escape.
• After the blocks fell, Kurotsuchi demanded to know when the crisis would end and urged Ōnoki to join the Shinobi Alliance.
• Ōnoki explained that joining would still leave them waiting months for Underground City entry, and he regretted refusing Haruno Sakura’s offer before she left the Land of Earth.
• The Fourth Raikage also regretted rejecting Haruno Sakura, who had flown away from Hidden Cloud Village before he could reconsider.

Ōnoki got Deidara to reveal Mitsuki and Konohamaru’s locations, then considered seeking refuge in the Underground City for his people. Hashirama pleaded with Madara to use the Rinnegan to save the dead, but Madara refused.

• Ōnoki messaged Deidara, who gave him Mitsuki’s location in the Underground City and told him not to bother him with small matters.
• The Raikage asked Ōnoki to help find his partner, and Deidara provided Konohamaru’s location before threatening to block Ōnoki.
• The Raikage urged Ōnoki to ask how soon their people could enter the Underground City, since their supplies were running low and the surface remained dangerous.
• Hashirama clung to Madara’s leg and begged him to save the people who had died, but Madara angrily refused.

Black Zetsu persuaded Madara Uchiha to revive the dead, buying time to steal the Church of the Mechanical God's technology and escape with its mother. Meanwhile, Sasori and Deidara completed a powerful humanoid Mechanical Puppet in New Rain Village.

• Black Zetsu convinced Madara Uchiha that reviving the dead would preserve the people needed for Infinite Tsukuyomi, and Madara agreed while denying he was helping Hashirama.
• Hashirama appeared, celebrated Madara's decision, and followed him as they left together.
• Black Zetsu emerged from underground and began preparing to steal the Super Nuclear Fusion Engine from Sand City.
• In New Rain Village, Deidara and Sasori celebrated the completion of a humanoid Mechanical Puppet powered by a Gelel Stone generator and a Chakra fusion device.
• Deidara and Sasori's puppet combined Netherite Alloy, Liquid Metal, and a Fire Source, and could wield seven Escape Techniques along with Sealing Techniques and Illusion Techniques.

Nagato found Sasori and Deidara amid the ruined village, but the God of Machines used hundreds of T-100 puppets to begin clearing the site and planning Amegakure’s reconstruction. When black cubes appeared overhead, the villagers fled while the God of Machines and its puppets prepared a sealing technique to intercept them.

• Nagato fired at Sasori and Deidara in anger over the destruction, but Sasori explained that their inventions could rebuild the village.
• The God of Machines deployed more than three hundred T-100 puppets, which cleared debris, helped injured villagers, and organized the reconstruction site.
• Nagato praised Sasori and Deidara as Akatsuki’s backbone after seeing the puppets’ work.
• A familiar roar sounded overhead, and the villagers formed hand seals and fled as black cubes appeared in the sky.
• The God of Machines and three hundred puppets began deploying a Sealing Technique, prompting Nagato, Deidara, and Sasori to wonder if they meant to intercept the cubes.

Hidan preached to the villagers of Amegakure, claiming faith in Jashin could grant power and protection, and demonstrated his strengthened immortality with Red Chakra. His display terrified the crowd, and he called the skeptical villager forward to take part in what came next.

• Hidan preached to the villagers about Jashin, promising believers protection, eternal life, and great power.
• Hidan stabbed himself in the chest and showed the crowd that Red Chakra healed the wound without leaving blood.
• Hidan explained that Jashin had strengthened his immortality and revealed a mission to spread faith across other worlds.
• Hidan cut off his left arm, then showed the villagers as it regrew in under a minute.
• Hidan ordered the villager who had questioned him to come forward, but the man begged him to choose someone else.

Naruto and Sasuke found Isobu in the Land of Water, where the Three-Tails begged them to take it away from the Shinobi World’s repeated attacks. Naruto sealed Isobu into his Sealing Space and prepared to pursue the last tailed beast, but a strange white-haired, pale-eyed youth appeared beside them.

• Naruto and Sasuke approached Isobu across the sea, and Naruto demanded that it come with him.
• Isobu recognized Naruto as the Nine-Tails’ jinchuriki and tearfully recounted how it had been bombed repeatedly.
• Kurama pulled Isobu into Naruto’s Sealing Space, where it found its brothers gathered around food and complained that the Shinobi World was unfair.
• Naruto said only the Red-haired Six Paths remained and opened a Light Gate to pursue the last tailed beast.
• A white-haired, pale-eyed youth suddenly appeared beside Naruto and Sasuke.