Chapter Summaries

Mu Yu fought Grimmjow in Hueco Mundo while trying to protect Void, whose remaining embers were fading. After restraining Grimmjow and enclosing Void in a barrier, Mu Yu left Grimmjow wondering why his spiritual pressure was so low.

• Mu Yu drew Kanemoto and blocked Grimmjow's rapid sword attacks, then wounded him with several sword energies.
• Grimmjow fired a Gran Rey Cero, but Mu Yu reflected it back with Gravity Rebound and injured him.
• Grimmjow released his Resurrección as Panther King and attacked with blades of spiritual energy, while Mu Yu sensed Void weakening.
• Grimmjow charged Mu Yu, but Mu Yu trapped him with Kidō #61: Six Rods of the Captivating Cloud and walked to Void.
• Mu Yu used Kidō #73: Inverse Mountain Crystal to enclose Void, and Grimmjow noticed Mu Yu's spiritual pressure was far lower than expected.

Mu Yu tried to save the dying Void, but Grimmjow explained how precious consciousness was to Hollows, changing Mu Yu’s understanding of her suffering. As Void faded away, she briefly regained enough awareness to dissolve Mu Yu’s seal before disappearing, leaving Mu Yu’s power growing and his resolve to confront the Soul King strengthened.

• Grimmjow realized Mu Yu was sealed and chose not to tell Aizen, hoping to fight Mu Yu at his full strength someday.
• Mu Yu explained why he wanted to save Void, while Grimmjow argued that weakness and loss were part of a Hollow’s existence.
• Grimmjow told Mu Yu that consciousness was a Hollow’s most precious possession, so Mu Yu used Responded and a Senzu Bean to try to save Void.
• Mu Yu’s thoughts turned toward the Soul King and the fate shaping his life, and the Song of Destiny began playing within him.
• Void briefly moved and dissolved Mu Yu’s Sword-Sealing Brand before she vanished into the sands of Hueco Mundo.

After Void sacrificed herself, Mu Yu's Soul Tree broke through its limits and reached Hollowfication, while his Courtyard began transforming into a miniature world of Shinigami. Grimmjow challenged Mu Yu, who revealed overwhelming power and left a vast canyon in Hueco Mundo without injuring him.

• Void dissolved into Hueco Mundo's sand, leaving Mu Yu despondent as Grimmjow gave him space.
• Mu Yu's Soul Tree reached LV45 after absorbing Void's spiritual power, and the Courtyard's yellow sand began transforming into reishi.
• Grimmjow underwent Resurrección and attacked Mu Yu, but Mu Yu evaded him without effort.
• Mu Yu mimed putting on a mask, unleashing immense spiritual pressure that forced Grimmjow to his knees.
• Mu Yu drew his Zanpakuto and released a controlled sword aura that carved a vast canyon through Hueco Mundo, leaving Grimmjow unharmed and awestruck.

Aizen slaughtered the captains and Visored, then evolved twice through the Hogyoku as Genryūsai Shigekuni Yamamoto and others failed to stop him. As Aizen approached the creation of the King's Key, Ichigo despaired and Ichibei Hyosube held Zero Division back, insisting Aizen remained within fate.

• Aizen cut down Sajin Komamura, Jūshirō Ukitake, Love Aikawa, Lísa Yadōmaru, and Shinji Hirako, using Complete Hypnosis to turn the captains against Momo Hinamori.
• Aizen killed Tōshirō Hitsugaya and the other captains, leaving Genryūsai Shigekuni Yamamoto as the only survivor among the Thirteen Court Guard Squads.
• The Hogyoku recognized Aizen and drove his first evolution, allowing him to withstand Yamamoto's attacks and rapidly heal his wounds.
• Kisuke Urahara and Yoruichi Shihōin joined Yamamoto, but they could not defeat Aizen, who began a second evolution after overcoming them.
• Aizen transformed into a new form with butterfly wings and the Hogyoku in his chest, while Ichigo despaired and Ichibei Hyosube stopped Zero Division from intervening.

Mu Yu returned to face Aizen, who had evolved into a transcendent, and overwhelmed him with his Hollowfication and swordsmanship. After Aizen transformed again and unleashed Ultimate Fierce Burst, Mu Yu trapped him in Niflheim, where Aizen’s own attack was reflected with doubled force and left him gravely wounded.

• Mu Yu arrived from Hueco Mundo and began fighting Aizen, whose evolved power had defeated the captains and Visored.
• Mu Yu’s Hollowfication let him cut Aizen with Yggdrasil and Kanemoto, break Aizen’s Illusion and Black Coffin, and unsettle him by pointing out that he had retreated.
• Aizen healed his wounds and evolved into his Final Fusion Form, then fired Fierce Burst at Mu Yu.
• Mu Yu emerged unharmed by using Bankai, and Aizen trapped him in a ring of restraints before launching Ultimate Fierce Burst.
• Mu Yu revealed that he had caught Aizen and pulled him into Niflheim, where the attack rebounded with doubled force and badly wounded Aizen.

Mu Ye overwhelmed Sosuke Aizen but could not kill him because of his near-immortality, so he unleashed Complete Hollowfication and brutally tormented him. After Mu Ye returned to normal, Aizen seized on the end of the transformation and claimed victory, leaving their battle unresolved.

• Kisuke Urahara and the other Shinigami feared Mu Ye’s immense power and wondered whether he could become a threat to the Three Realms.
• Mu Ye continued suppressing Sosuke Aizen, whose Super Regeneration healed every injury and made him impossible to kill.
• Mu Ye entered Complete Hollowfication, retaining his reason while his power and killing urges surged.
• Demonic Mu Ye repeatedly destroyed and tormented Sosuke Aizen, but Aizen recovered each time.
• Mu Ye ended his Complete Hollowfication and decided the brutal technique should be sealed away.
• Sosuke Aizen, recovering from the ordeal, declared that he had won because Mu Ye’s Hollowfication had ended.

Mu Yu defeated Aizen, evolved beyond the limits of Shinigami and Hollow, and attacked the Spirit King's Palace, where he rejected the Soul King's offer to succeed him. After battling Zero Division and leaving Soul Society without night, Mu Yu departed as the Wandenreich waited for his eventual disappearance.

• Mu Yu completed Phase Four of the Dream Fulfillment Plan and struck Aizen, shattering his spiritual-pressure shell and ending their battle.
• Aizen accepted his defeat and collapsed as the Soul Reapers recognized that Mu Yu had surpassed them all.
• Mu Yu cut through the barriers around the Spirit King's Palace, provoking a battle with Zero Division that brought a strange chant and a hundred days without night to Soul Society.
• Mu Yu saw the Soul King and rejected His offer to become the next Soul King, then left the ruined palace behind.
• Ichibei Hyosube and the revived members of Zero Division were stunned by Mu Yu's rejection, while the Wandenreich remained cautious until Mu Yu disappeared from the Three Realms years later.

Months after Mu Yu defeated Aizen, his victory reshaped the Soul Society and Hueco Mundo while he drifted through the Void. The system found the One Piece world, and Mu Yu returned, eager to reunite with Kuina, Zoro, and Master Koshiro.

• Mu Yu's reputation spread across the realms, and Central 46 quietly corrected wrongful cases as it feared his influence.
• The Visored returned to the Shinigami faction and advanced their Hollowfication, while Kisuke Urahara returned to secretly research the Hogyoku.
• Hueco Mundo lost much of its strength after Aizen's defeat, and its surviving Arrancar began governing through a council-like system.
• Mu Yu spent over a month drifting through the Void and reflected on how his journey through the Shinigami World had transformed him.
• The system completed its search for the One Piece world, and Mu Yu returned there, thinking of Kuina, Zoro, and Master Koshiro.

Mu Yu returned to the East Blue and learned from the Golden Scorpion Pirates that Nami had stolen their treasure. After checking newspapers and estimating that the story began three or four years later, he watched as the pirates spotted Nami’s lifeboat approaching their ship.

• Mu Yu beat Captain Leonard and the Golden Scorpion Pirates, then made them explain how a woman they had rescued stole their treasure.
• Mu Yu recognized the thieves’ description as Nami and learned from newspapers that Buggy and Don Krieg had already become prominent in the East Blue.
• Mu Yu estimated that the story was still three or four years away and thought of Kuina and Zoro waiting for him in Shimotsuki Village.
• Mu Yu alternately told Leonard to stop chasing Nami and ordered the pirates to keep pursuing her, leaving Leonard eager to please him.
• The Golden Scorpion Pirates spotted Nami’s lifeboat heading toward their ship, and Mu Yu confirmed that the young thief was Nami.

Nami tried to escape the Golden Scorpion Pirates with a stolen treasure chest, but a storm overturned her boat and Mu Yu rescued her. She agreed to guide him to Cocoyasi Village, then accepted a maid job after Mu Yu offered her wages.

• Nami chose to risk sailing through an approaching storm rather than abandon the treasure chest as the Golden Scorpion Pirates and other pirate ships pursued her.
• A storm struck, and Mu Yu used Geppo to rescue Nami after her lifeboat capsized, then ordered the Golden Scorpion Pirates to turn back.
• After waking aboard the ship, Nami attacked Mu Yu and offered to repay the treasure by taking him to her home in Cocoyasi Village.
• Mu Yu accepted Nami's offer and told her she had to work as his maid aboard the pirate ship.
• Nami agreed to be Mu Yu's maid for ten thousand Beli a day, then learned he had intended to offer twenty thousand.

A storm had thrown the Golden Scorpion Pirates off course, leaving them short on food and water, so Mu Yu put Nami in command of the ship. Nami and the pirates were stunned by his decision as she realized he knew about her navigation skills and that events were straying from her plans.

• Nami reflected on her uneasy life as Mu Yu’s maid aboard the Golden Scorpion Pirates’ ship, where the crew treated her with respect and special privileges.
• Leonard told Mu Yu that the ship was lost after the storm and that supplies were running low.
• Mu Yu called Nami over, and she mistook his warning about the shortage for a threat to eat her before he knocked her on the forehead.
• Nami dramatically shed tears, prompting Mu Yu to photograph her until he told her to stop pretending.
• Mu Yu placed Nami in command and ordered the sailors to follow her, leaving Nami and the Golden Scorpion Pirates in disbelief.

After Nami proved her skill as a navigator, the Golden Scorpion Pirates welcomed her and sailed on with Mu Yu. The Crick Pirates surrounded their ship, but Mu Yu sliced one of their ships apart and challenged them to count their fleet again.

• Nami guided the Golden Scorpion Pirates safely back on course, earning the crew's respect and joining their banquet.
• Mu Yu recognized the approaching fleet as the Crick Pirates and dismissed them as unworthy of concern.
• The Crick Pirates surrounded the Golden Scorpion Pirates and attacked, frightening Nami and the crew.
• Mu Yu drew Kanemoto and cut an enemy ship cleanly in half with one casual slash.
• Mu Yu asked the Crick Pirates how many ships they had left, leaving them stunned.

Mu Yu devastated the Crick Pirates’ fleet with his sword, leaving the Golden Scorpion Pirates in awe. Nami wrestled with the hope that Mu Yu might defeat Arlong and free Cocoyasi Village, then drove the ship toward Buweier Island with renewed urgency.

• Mu Yu split the Crick Pirates’ ship with one sword strike and destroyed several more ships when their officer questioned his identity.
• The Golden Scorpion Pirates sailed on, wondering whether Mu Yu had come from the Grand Line, while he relaxed on deck and read.
• Nami remembered Arlong defeating the Marines and feared that his strength and underwater tactics might still overwhelm Mu Yu.
• Nami considered whether Mu Yu could free Cocoyasi Village and help her reach her goal of one hundred million Belly.
• After a sleepless night, Nami emerged with dark circles and bloodshot eyes and urged the crew to sail faster toward Buweier Island.

Nami tried to use Mu Yu’s strength against Arlong, but his restraint toward the villagers made her feel guilty about deceiving him. When Mu Yu revealed that the pirates’ treasure was safe and gave it back to them, Nami realized he had been spending her money and her favorability toward him crashed.

• Leonard dismissed the crew’s suspicions about Nami while privately deciding to prove himself as Mu Yu’s most valued lackey.
• The Scorpion King docked at Buweier Island, where Mu Yu ordered the pirates to pay for their purchases and forbade them from harming anyone.
• Nami admired Mu Yu’s compassion for the villagers, then wavered over leading him into a fight with Arlong.
• Leonard told Mu Yu that Nami had stolen the pirates’ money and lost it, but Mu Yu revealed the treasure was in his room and let the pirates reclaim it.
• Nami realized Mu Yu had used her money to pay her wages, and her favorability toward him plunged into negative territory.

Nami accepted Mu Yu’s offer to buy her clothes in exchange for wearing a maid outfit, then spent the day shopping with him. His kindness and easygoing treatment of others made her question how she could keep using him for money.

• Nami angrily took Mu Yu’s ten-thousand-Beli commission and agreed to follow his orders.
• Mu Yu promised to pay for any clothes Nami wanted if she wore a maid outfit, and she accepted.
• Nami spent hours trying on outfits and shopping while Mu Yu carried her bags and followed her into another clothing store.
• At a snack stall, Mu Yu calmly forgave a vendor who splattered grease on his expensive clothes, surprising Nami.
• Nami reflected on Mu Yu’s kindness and wondered what she should do, thinking of Bellemere.

While dining on Buweier Island, Mu Yu and Nami heard that one person had wrecked several ships belonging to the Crick Pirates and that Admiral Krieg was preparing to retaliate. A tale about Made Torrega and his treasure caught Nami’s attention, and after the Scorpion King sailed, she unexpectedly slowed the journey and lounged on deck.

• At a restaurant on Buweier Island, diners discussed the Crick Pirates’ damaged ships and Admiral Krieg’s plan to seek revenge, while Nami realized they were talking about Mu Yu’s actions.
• When a diner claimed one person had attacked the Crick Pirates, the crowd laughed, but Nami stayed quiet because she knew the report was true.
• The diners began telling a story about Made Torrega, the Most Evil in History Treasure Hunter, and Nami became interested in the treasure aboard his ship.
• After two days of rest and resupplying, the Scorpion King set sail, but Nami relaxed on deck instead of urging the crew to hurry home.

After three days at sea, Mu Yu encountered the treasure hunter Made Torrega’s ship being besieged by East Blue pirates and decided to claim it. He overwhelmed Made Torrega with Conqueror’s Haki and a single slash, leaving Nami and both crews stunned.

• The Scorpion King came upon several pirate crews attacking Made Torrega’s gold-and-jewel-covered ship, and Leonard identified the attackers as notorious East Blue pirates.
• Made Torrega sent out chains that pierced the attacking ships and sank them, terrifying the Golden Scorpion Pirates.
• When Made Torrega’s ship approached, Mu Yu stopped his crew from fleeing and announced that he would take the vessel.
• Mu Yu flashed aboard Made Torrega’s ship and used Conqueror’s Haki to knock out most of its crew.
• Made Torrega attacked Mu Yu with chains, but Mu Yu severed the chains and his Armament Haki with one slash, leaving Made Torrega badly wounded on the deck.

Mu Yu defeated Made Torrega and accepted Nami’s plea to save Cocoyasi Village, then recruited her as his financial officer to manage the captured treasure. He offered Made Torrega a chance to join him and hunt for treasure in powerful territories, leaving Nami wondering whether Mu Yu was a pirate after all.

• Nami asked Mu Yu to help Cocoyasi Village against the pirates oppressing it, and he agreed without demanding anything in return.
• Mu Yu appointed Nami financial officer, and she quickly organized the treasure ship’s accounts and documents.
• Made Torrega and the other Treasure Hunters woke up unharmed, and Made Torrega restrained his urge to threaten Mu Yu with a hostage.
• Mu Yu offered Made Torrega a place in his crew and proposed searching for treasure in places such as Marine Headquarters and Mary Geoise.
• Made Torrega agreed to recognize Mu Yu as his boss, while Nami wondered whether Mu Yu was a pirate like Arlong.

Mu Yu revealed his plan to use a Pirate Code to restrain pirates worldwide and began by bringing the Golden Scorpion Pirates and Treasure Hunters under his control. As the ship neared Cocoyasi Village, Nami prepared to return home, and Mu Yu declared that the campaign would start there.

• Nami warned Mu Yu that Made Torrega and his crew were dangerous, but Mu Yu insisted his strength would keep them from betraying him and said the subdued crews would no longer commit evil.
• Mu Yu told Nami he intended to bring every pirate under his control and showed her the Pirate Code, which limited plunder and prohibited cruelty toward surrendered people and occupied communities.
• Nami feared the code would make Mu Yu the target of pirates worldwide, but Mu Yu argued that he could win pirates over by offering them benefits alongside the code.
• Mu Yu and Nami confirmed they would reach Cocoyasi Village in half a day, and Mu Yu said the effort to have every pirate sign the code would begin there.
• Nami asked to change out of her maid outfit before returning home, and Mu Yu agreed; she emerged later dressed elegantly as the crew watched in astonishment.

Mu Yu forced the pirates to sign his magically binding Pirate Code and appointed Leonard to promote it. As the group reached Cocoyasi Village, Nami learned more about the Fish-Men and was told to bring the code to Arlong's crew, who panicked when they recognized Mu Yu's ship.

• Mu Yu demanded that the pirates leave bloody handprints on the Pirate Code, and Leonard signed first and was made an officer.
• The parchment bound signers to the code, revealing the location of any pirate who broke it and allowing Mu Yu to place bounties on them.
• Made Torrega realized Mu Yu planned to challenge powerful groups, while his crew understood they were caught up in Mu Yu's ambitions.
• Nami spotted Cocoyasi Village, and Psyche P explained that Fish-Men were not a superior race and were sought after in the slave market.
• Mu Yu handed Nami the Pirate Code and told her to spread it to the Arlong Pirates as the ship approached Arlong Park.
• Arlong recognized Mu Yu's ship, and his crew fell into panic.