Chapter Summaries

Yechen, Tsunade, and Ito Miyuki traveled to Black Crystal Rock Island to train and investigate its ruins after witnessing its artificial volcano erupt. The next afternoon, Tsunade returned with an unusually intelligent pink piglet.

• Yechen decided to visit Black Crystal Rock Island after Ferdinand described its ancient ruins, artificial volcano, and powerful creatures.
• Yechen, Tsunade, and Ito Miyuki sailed from Toto Island aboard the Thousand-Night Snow and waited near the island to observe the volcano.
• The artificial volcano erupted like a giant fountain, covering the island in pale red lava while its plants and animals endured the spectacle.
• Ito Miyuki cleared the lingering mist with Wind Release Ninjutsu, and the three began training their Haki and other skills on the island.
• Tsunade called Yechen and Ito Miyuki over after finding a bright-eyed pink piglet with purple hair on its tail.

Tsunade brought home a strange little pig she found near the volcanic crater, and she and Ito Miyuki named it Little Piggy. Yechen discovered it ate the island’s unusual crystal-like tree bark, but Little Piggy eagerly devoured grilled fish, leaving the group curious about its unusual nature.

• Tsunade recounted how she found a bone-armored creature chewing tree bark and knocked it away, revealing a pig that affectionately clung to her.
• Tsunade and Ito Miyuki named the pig Little Piggy and took Yechen to the strange forest near the crater.
• Yechen discovered the trees’ bark contained warm, honeycomb-like crystal, and Little Piggy eagerly tried to eat a piece.
• Tsunade offered Little Piggy grilled fish, and it cried before happily devouring the food.

Yechen, Tsunade, and Ito Miyuki followed the little pig to ancient ruins, where it tried to share its cherished tree bark with them. As Yechen searched the hidden compartment for a keepsake, he found a black stone tablet and froze when he looked at it.

• The little pig led Yechen, Tsunade, and Ito Miyuki from the island to a cluster of ancient iron buildings.
• The little pig tapped a wall until a hidden compartment opened, revealing bark it had saved as a treat for them.
• The little pig spat out the bark after tasting it, and Yechen, Tsunade, and Ito Miyuki swallowed pieces to honor its kindness.
• Yechen searched the compartment for something to take aboard and discovered a black stone tablet.
• Yechen looked at the tablet and froze.

Yechen deciphered the Stone Tablet and learned that it led to the forbidden grounds of a kingdom destroyed by royal families seeking its advanced technology. He, Tsunade, and Ito Miyuki opened the entrance beneath the island’s volcano, and the ground began to shake.

• Yechen read the Stone Tablet’s inscription and learned that the fallen kingdom had entrusted the Hayate Clan with preserving its history and the key to its forbidden grounds.
• Yechen discovered that the forbidden grounds lay beneath the artificial volcano, and Tsunade sympathized with the kingdom’s destruction because the Uzumaki Clan had suffered a similar fate.
• Tsunade took the Stone Tablet, and Yechen invited Little Piggy to return to the ship, but the creature refused to leave them.
• Yechen located the entrance with his Tenseigan, inserted the Stone Tablet into a concealed slot, and waited when nothing happened.
• Tsunade kicked the Stone Tablet, triggering clicks and shaking the mountain and ground.

Yechen, Tsunade, and Ito Miyuki entered the underground complex beneath the volcano and discovered that they had triggered a trap by misreading the Stone Tablet. They found the true sacred grounds and uncovered a text describing advanced methods for cultivating all three types of Haki.

• Yechen caught Tsunade and Ito Miyuki before they fell onto the spikes at the bottom of the shaft.
• Yechen realized they had triggered a mechanism, then used his Tenseigan to locate the sacred grounds and blasted through the wall with a golden spear.
• Yechen led Tsunade, Ito Miyuki, and Little Piggy through a vast underground industrial complex and into a passage beyond it.
• Yechen opened the door marked with a fist and sword and entered a room containing two texts written in modern characters.
• Yechen, Tsunade, and Ito Miyuki read that the first text described extensive methods for cultivating all three types of Haki.

Yechen, Tsunade, and Ito Miyuki found detailed Haki training insights and a great swordsman’s swordsmanship notes in the secret chamber. After collecting the texts and medicine notes, they returned to the surface, ready to train with their discoveries.

• Yechen read the chamber’s notes on Armament, Observation, and Conqueror’s Haki and judged their guidance superior to his notebook.
• Yechen discovered and memorized a great swordsman’s lifelong insights, which he planned to combine with his own Sword Technique.
• Tsunade and Ito Miyuki memorized the training material they wanted, and Tsunade searched the room for more treasures.
• The three people and one pig found medicine notes in another room, which interested Tsunade, before returning to the surface.
• Yechen, Tsunade, and Miyuki left the unexplained ancient technology and modern writing aside and prepared for secluded training.

After a year of training on an uninhabited Grand Line island, Yechen mastered all three types of Haki and fused his lightning, Haki, and swordsmanship into Imperial Thunder: World-Splitting-Godslayer. He and the others decided to return to the Shinobi World, taking Little Piggy with them.

• Yechen spent a year training while Tsunade and Ito Miyuki watched over Little Piggy, who learned to cook from Miyuki.
• Yechen endured a storm of lightning and practiced his swordsmanship, combining lightning’s power with his sword intent.
• The system recognized Yechen’s new technique as Imperial Thunder: World-Splitting-Godslayer and recorded his increased combat power.
• After ending his seclusion, Yechen told Tsunade and Ito Miyuki that the passage back to the Shinobi World had been open for a year.
• Yechen, Tsunade, Ito Miyuki, and Little Piggy agreed to return to the Shinobi World.

After returning from the One Piece World, Yechen discussed the Shinobi World's progress and future plans with Kaguya, then toured the unified world with her. When Yechen, Tsunade, and Ito Miyuki prepared to leave again, Little Piggy chose to go with them.

• The Gods Alliance elders agreed with Yechen's plan to avoid rushing into another world's affairs, while the alliance's experts had already eliminated Kara and resolved the issue of Hamura's descendants on the moon.
• Yechen visited Kaguya in Konoha, where they shared tea and discussed his deepened strength and conviction.
• Yechen and Kaguya spent several days touring the Shinobi World, while Tsunade and Ito Miyuki returned to their families.
• Naruto and the others competed for Little Piggy's attention, and Little Piggy enjoyed the attention and food.
• When Yechen, Tsunade, and Ito Miyuki prepared to leave again, Little Piggy followed them.

After returning to the One Piece world, Yechen, Tsunade, Ito Miyuki, and Little Piggy resumed their voyage aboard the Thousand-Night Snow. When a Navy warship attacked them, Miyuki countered its cannons and confronted its crew, demanding to see their commander.

• Yechen taught Little Piggy a cultivation method for Summoned Beasts, but the pig preferred wine and roast meat.
• Ito Miyuki sensed an approaching ship with Observation Haki, and the group saw that it was a Navy warship.
• The warship's commander ordered his marines to sink the Thousand-Night Snow after it did not stop for inspection.
• Ito Miyuki used Phoenix Flower Jutsu to destroy the incoming cannonballs in midair.
• Ito Miyuki ran across the sea to the warship and demanded that its commander come out.

Ito Miyuki attacked Vice Admiral Onigumo after he ordered the Thousand-Night Snow fired upon, overwhelming him with her speed and swordsmanship. When Onigumo launched his strongest attack, Miyuki countered with Wind Release and sent him and the marines reeling.

• Ito Miyuki confronted Vice Admiral Onigumo aboard the warship and attacked the marines who had fired on the Thousand-Night Snow.
• Ito Miyuki and Onigumo clashed with their blades, and she severed one of his arms while badly wounding him.
• Ito Miyuki judged Onigumo's skill and challenged him to use his strongest move.
• Onigumo launched Hell Stinger, but Ito Miyuki countered with Wind Release: Great Breakthrough, driving him back and injuring the marines with the gale.

Ito Miyuki defeated Onigumo and the Marines, allowing Yechen and his companions to seize their warship. After settling in aboard their new ship, Yechen contacted Ferdinand to find rare materials and a swordsmith to forge Miyuki a blade.

• Ito Miyuki cut Onigumo into eight pieces and killed the Marines who attacked her.
• Yechen, Tsunade, and Little Piggy boarded the warship and cleaned it, claiming it as their own and naming it the new Thousand-Night Snow.
• Ito Miyuki changed clothes and returned to her usual self, while Little Piggy soon stopped fearing her.
• Yechen and his companions feasted on Sea King meat and drinks aboard the ship.
• Yechen called Ferdinand and asked him to find a swordsmith to forge a fine blade for Ito Miyuki.
• Ferdinand offered to ask a family he knew to forge the blade and explained that they would need rare metals; Yechen asked what terms Ferdinand wanted.

Yechen learned from Ferdinand about a secretive forging family rumored to make Cursed Blades, then turned the Thousand-Night Snow back toward Toto Island. Ten days later, Yechen and his companions arrived aboard a Marine warship, leaving Ferdinand worried that the conspicuous vessel would bring trouble to his business.

• Ferdinand agreed to give Yechen his rare metals in exchange for help if he ever got into trouble.
• Yechen told Ferdinand that he had killed Vice Admiral Onigumo, then asked about the forging family.
• Ferdinand described the family's unusual Iron-number names and its history of forging powerful blades, including rumored Cursed Blades.
• Yechen, Ito Miyuki, and Tsunade turned the Thousand-Night Snow toward Toto Island and rested during the ten-day voyage.
• Ferdinand and Catarina saw Yechen arrive aboard a warship, and Ferdinand feared the Marines would connect him to Yechen.

Yechen collected rare metal from Ferdinand on Toto Island and learned that it came from beneath Fish-Man Island and could be used to forge weapons. He left with Tsunade, Ito Miyuki, and Ferdinand to visit the family of smiths, while Catarina stayed behind to manage the merchant association.

• Yechen arrived on Toto Island aboard a Marine warship, and Ferdinand hurried him away from the docks as Catarina questioned Tsunade about the ship and Ito Miyuki's role in stealing it.
• Ferdinand showed Yechen a red stone ore that resisted smelting and cutting and explained its unusual potential for forging weapons.
• Yechen took two chests of rare metals and asked Ferdinand where the family of smiths was located.
• Ferdinand gave Tsunade his collection of medical books, and Catarina stayed on Toto Island to oversee the merchant association.
• Yechen, Tsunade, Ito Miyuki, and Ferdinand left aboard the Marine warship to find the smiths, despite the trouble the Marines might cause.

On the warship’s third day at sea, Yechen found Little Piggy befriending News Coos and bought a newspaper from them. He discovered that Ito Miyuki had been branded a pirate with a 250 million Belly bounty, while Tsunade was angry she had not received one; Ferdinand regretted joining their ship.

• Ferdinand was amazed by Little Piggy’s cooking and asked Yechen where he could find more intelligent pigs, but Yechen told him Little Piggy was one of a kind.
• Yechen found Little Piggy feeding dried fish to News Coos on the deck and bought a newspaper to support its new friends.
• Yechen saw Ito Miyuki’s wanted poster and realized a Marine aboard the stolen warship must have sent news of the incident to the Marines.
• Yechen noted that Ito Miyuki had a 250 million Belly bounty and had been labeled a pirate, though he considered the group adventurers.
• Ferdinand panicked when he realized he had boarded a pirate ship, while Ito Miyuki accepted the poster and Tsunade vowed to fight Marines so she could earn one too.

Sengoku and Kizaru assessed the unknown pirate Ito Miyuki, and Sengoku set her bounty at 250 million. In the original timeline, Yechen’s group reached Molten Iron Hammer Island to commission weapons, where Ferdinand presented a strange coin to a blacksmith.

• Sengoku told Kizaru that an unknown woman had killed Onigumo and asked him to assess the report.
• Kizaru judged Ito Miyuki an exceptionally dangerous fighter who likely relied on speed rather than a Logia Devil Fruit.
• Sengoku assigned Ito Miyuki a bounty of 250 million.
• After seven days at sea, Yechen, Tsunade, Ito Miyuki, and Ferdinand arrived at Molten Iron Hammer Island, while Little Piggy stayed aboard.
• Ferdinand brought the group to a blacksmith’s workshop and showed the bearded smith a silver-white coin.
• The smith tested the coin in the furnace, where it turned pale yellow and popped without melting.

Yechen and Ferdinand visited a secretive smithing family to arrange a blade, but Ferdinand revealed he was protecting his romance with the family head’s granddaughter, Tie Qibai. The chapter left Ferdinand reunited with Tie Qibai while Tsunade took her jealousy out on Yechen.

• A bearded smith recognized Ferdinand’s signal and led Yechen and the others to meet the family head.
• Yechen threatened to kill the smiths if they refused to forge his blade, and Ferdinand begged him to negotiate peacefully.
• Ferdinand admitted he liked Tie Qibai, the family head’s granddaughter, and insisted that Catarina supported their relationship.
• The group reached a courtyard, where Tie Qibai rushed to embrace and kiss Ferdinand.
• Tsunade pinched Yechen as Ferdinand and Tie Qibai affectionately reunited.

Yechen and his companions sought the Iron Family’s swordsmith to forge two battle blades, but learned that Tie Yi had retired and his apprentice claimed he alone could make renowned swords. Xiao Qi led them to Tie Yi after Ferdinand warned her about Yechen, and the chapter ended with Yechen confronting the old craftsman and producing two crates of materials.

• Ferdinand asked Xiao Qi to persuade her grandfather to forge blades, but she said Tie Yi had retired and the bearded apprentice claimed the work was his.
• Yechen pressured Ferdinand to resolve the problem, so Ferdinand whispered to Xiao Qi, who agreed to take them to Tie Yi while fearing Yechen might act recklessly.
• Xiao Qi led Yechen, Ferdinand, and the others into Tie Yi’s room, where the old swordsmith was playing a board game with Capone Bege.
• Yechen pushed past Ferdinand, demanded that Tie Yi forge two battle blades, and produced two crates of materials, startling everyone.

Uchiha Ye Chen killed Capone Bege and his crew in an instant after Bege threatened him, then offered Clan Leader Tie protection and rewards in exchange for forging two battle blades. The chapter ended with Ye Chen seeking to bring the Iron Family and Molten Iron Hammer Island under the Gods Alliance’s influence.

• Capone Bege threatened Yechen for interrupting his meeting with Tie Yi.
• Yechen blasted Bege through a wall with repulsive force, then killed him and his men with Wild Sand Gold Explosion.
• Tie Yi, Ferdinand, and Xiao Qi were terrified by Yechen’s display of power.
• Yechen introduced himself to Tie Yi and asked him to forge two battle blades.
• Yechen offered to protect and reward the Iron Family, and invited its gifted members to join his team.