Arc 16Tournament and Aizen’s Warning

Wu Biao won the martial arts tournament, confronted the Monster Association, and returned to his family and Bang’s dojo. After Aizen targeted Aya, the captains learned that Revolution’s experiments and its Seven Gods could endanger the world, while Wu Biao pursued Aizen.

  • Wu Biao entered the tournament as Gou Lanzi, defeated his opponents, and beat Bang in the final before Gouketsu invaded and offered Monster Cells to the martial artists.
  • Wu Biao ate the Monster Cells, killed Gouketsu, then fought Saitama so fiercely that they devastated Ghost Town before paying to repair its utilities.
  • Wu Biao visited Bang’s dojo, agreed to learn Water Stream Rock Smashing Fist, and then returned to the Soul Society to reunite with Ichigo’s family and meet Aya.
  • Aya attacked Wu Biao during their first reunion, but he recognized her and later returned home with her and Unohana Retsu.
  • Aizen used a false distress signal to separate Renji from Aya, then attacked Aya and left dead men around her before Wu Biao went after him.
  • Urahara showed the captains evidence linking Aizen to Hero Association incidents and experiments, and Aizen warned that Revolution would retaliate over a dead test subject.
  • Aizen explained that Revolution sought to create a god and that its Seven Gods experiments could threaten the world, while Urahara asked what the experimental subjects were.
Chapters 397–423 Vol. 4 Read

Ch. 397La La La La La La, I Am a Good Person

Saitama and Wu Biao registered for the Super Fight under Wu Biao’s assumed identity, with Wu Biao accepting the name Gou Lanzi for the prize money. Bang arrived to register as the chapter ended.

  • Wu Biao and Saitama shoved through the crowd to reach the registration desk, where staff mistook Saitama for the competitor.
  • The staff member identified Wu Biao as competitor Gou Lanzi, prompting him to smash the desk and angrily reject the name.
  • Saitama persuaded Wu Biao to accept the alias Gou Lanzi by reminding him he could earn three million, and Wu Biao registered his style as Whirlpool Madman Fist.
  • The staff member sent Wu Biao to the competitors’ lounge and directed Saitama to the spectator stands.
  • Bang arrived at the registration desk and named his style Water Stream Rock Smashing Fist.

Ch. 398Contestants

The Super Fight tournament began in City C as the host introduced its contestants, including Bang, the previous champion Sneck, and Gou Lanzi. As the opening matches approached, Saitama laughed at Gou Lanzi’s embarrassing introduction and wondered about the Hero Association before returning to his supermarket flyers.

  • The host explained the tournament’s elimination format and introduced the contestants at the packed venue in City C.
  • The host introduced Rensutan and Sarara, whose crossdressing martial arts announcement stunned the male spectators.
  • Bang was introduced as a new contestant and B-Class hero, and he entered the tournament to promote Water Stream Rock Smashing Fist and his dojo.
  • The host introduced Sneck, Volten, Gatling, Zakos, and other contestants, then announced Gou Lanzi as the successor to Whirlpool Madman Fist.
  • Saitama laughed at Gou Lanzi’s introduction, wondered what the Hero Association was, and looked through supermarket sale flyers.

Ch. 399I'm Very Interested in You

At the eighteenth Super Fight, Bang stunned the spectators by defeating his burly opponent in an instant. Wu Biao followed Bang after the match, showed interest in his strength, and was invited to visit Bang's dojo.

  • Bang faced a burly contestant who threatened him, while Zakos and Boulden discussed the matchup below the ring.
  • Zakos mocked Wu Biao and challenged him, but Wu Biao dismissed him as too weak and turned his attention to Bang.
  • Bang defeated his opponent so quickly that even the referee could not tell what had happened.
  • Wu Biao followed Bang, examined his physique, and told him he was very interested in him.
  • Bang noticed Wu Biao's strength and invited him to his dojo, prompting Wu Biao to ask about its fighters and size.

Ch. 400Cudgel

Wu Biao, competing under the name Gou Lanzi, defeated Zakos with a single controlled kick in the tournament’s first round. Bang recognized Wu Biao’s exceptional physical control and considered teaching him Water Stream Rock Smashing Fist, but Wu Biao still mistook Bang’s name.

  • The host called Gou Lanzi to fight Zakos, and Wu Biao demanded that everyone call him Brother Biao before entering the ring.
  • Zakos charged at Wu Biao with his Wild Boar Assault Fist, but Wu Biao struck his ribs with a single kick and sent him out of the ring.
  • Sarara laughed at the sudden victory while Snake worried that Wu Biao would be his opponent.
  • Bang praised Wu Biao’s precise control and considered teaching him Water Stream Rock Smashing Fist.
  • Wu Biao returned to Bang and mistakenly said the host was calling Hachigen for a match.

Ch. 401Semifinals

Bang and Wu Biao continued their Super Fight upsets, defeating former champions and advancing through the quarterfinals. The semifinals began with Bang set to face Thunder Thunder Fist Boulden.

  • Bang defeated the founder of the Kudo Style in a single strike, stunning the tournament audience.
  • Wu Biao faced Snake, who hesitated until Wu Biao struck a dramatic pose and introduced himself.
  • Snake attacked Wu Biao, but Wu Biao casually threw him out of the ring and won the match.
  • Bang and Wu Biao each defeated their quarterfinal opponents in one strike and advanced to the semifinals.
  • The host announced the first semifinal match: Bang versus Thunder Thunder Fist Boulden.

Ch. 402The Finals Begin

A monster envoy learned that the bald man who killed Elder Centipede was competing in City C’s martial arts tournament and planned to use the event to recruit martial artists with monster cells. In the final, Wu Biao defeated Sarara and began fighting Bang, revealing a powerful technique that Bang narrowly evaded.

  • A four-eyed giant learned that Elder Centipede’s killer was competing in the tournament and planned to find martial artists to consume monster cells.
  • Wu Biao defeated Sarara with one punch, rejected Sarara’s advances, and kicked him out of the venue.
  • Wu Biao and Bang began the final without resting, and their opening exchange sent them both retreating.
  • Wu Biao assumed a strange stance and charged Bang with a fierce attack that the contestants recognized as the Wild Boar Assault Fist.
  • Bang evaded Wu Biao’s attack with fluid movements, leaving the contestants astonished.

Ch. 403Duel with Bang

Wu Biao fought Bang in a martial arts match, first using Zakos's Wild Boar Assault Fist before switching to raw power and Armament Haki. The battle left Bang at the arena's edge, but he stood up unharmed and prepared to continue.

  • Wu Biao surprised Bang by using the Wild Boar Assault Fist, and Bang recognized the technique before countering with Water Stream Rock Smashing Fist.
  • Wu Biao realized Bang had beaten him in technique, then adopted a strange stance that reminded the spectators of Sneck.
  • Wu Biao charged Bang with his fists hardened by Armament Haki, and the two exchanged a fierce series of punches.
  • Bang's counterpunch sent Wu Biao staggering back, while Bang was driven to the arena's edge with his clothes torn apart.
  • Bang stood up unharmed and said he needed to move around, and Wu Biao grinned and offered to help him work off his rust.

Ch. 405A Frustrating Fight

Wu Biao fought Bang in the arena, where Bang’s Water Stream Rock Smashing Fist redirected Wu Biao’s attacks and tested his strength and technique. Wu Biao copied parts of Bang’s style and continued trading blows, but Bang’s superior skill left him struggling to land effective hits.

  • Saitama recognized Bang’s strength and worried that Wu Biao might lose the three million.
  • Bang endured Wu Biao’s powerful punch while hiding his pain to protect his dojo’s reputation.
  • Wu Biao imitated the Water Stream Rock Smashing Fist, and Bang responded with a fiercer stance that sent Wu Biao flying.
  • Wu Biao rushed Bang, and the two exchanged a rapid barrage of blows that cracked the arena.
  • Bang broke through Wu Biao’s offense and wounded his arm, while Wu Biao kept fighting despite Bang redirecting most of his attacks.

Ch. 406I Can't Stand This Injustice

Bang and Wu Biao fought a brutal, destructive match until Bang surrendered, but Wu Biao struck him anyway and left him unconscious. Wu Biao remained standing as Bang was carried off in disgrace.

  • Bang and Wu Biao traded powerful blows, leaving both bloodied and the arena shattered.
  • Wu Biao launched a relentless assault, forcing Bang into retreat and defense.
  • Wu Biao landed a devastating strike that sent Bang to the edge of the ruined platform.
  • Bang jumped off the platform and surrendered, deciding the match was not worth risking his life.
  • Wu Biao punched Bang after his surrender, and Bang fainted from the blow.

Ch. 407Gouketsu

Wu Biao’s tournament victory was interrupted when Gouketsu broke into the venue and offered Monster Cells to the contestants. Wu Biao faced Gouketsu, and Sarara appeared beside the monster, transformed and seeking him out.

  • Wu Biao celebrated his prize while Saitama happily read supermarket sale flyers.
  • Gouketsu smashed through the contestants’ passage and entered the venue, alarming Bang and the other contestants.
  • Wu Biao told Bang to lead the others away and faced Gouketsu, who accused him of killing Elder Centipede.
  • Gouketsu scattered Monster Cells and urged the martial artists to eat them and become monsters.
  • Gouketsu attacked Sneck, but Wu Biao intercepted his kick and sent Sneck flying.
  • Sarara, now transformed and covered in spikes, appeared beside Gouketsu and declared that he had come to find Wu Biao.

Ch. 408Monster Cells (Second Update)

At the martial arts tournament, Gouketsu tried to recruit the challengers by demonstrating Monster Cells, which transformed Sarara and Volten but seemed to have no effect on Wu Biao. The chapter ended with Wu Biao gobbling up the entire stash of Monster Cells while Gouketsu watched in outrage.

  • Wu Biao ate a Monster Cell, but showed no signs of turning into a monster, confusing Gouketsu and the contestants.
  • Volten ate a Monster Cell, transformed into a monster, and unleashed destructive lightning across the arena.
  • Gouketsu introduced himself as a Monster Association member and explained that Monster Cells could help people surpass human limits.
  • Void-Slaying Hand Rensutan asked for more Monster Cells, prompting Gouketsu to realize Wu Biao had taken the ones scattered on the ground.
  • Wu Biao protected the Monster Cells and rapidly ate them all while Gouketsu yelled at him to stop.

Ch. 409Opponent (Third Update)

Wu Biao devoured the Monster Cells without transforming, while Saitama joined the arena and killed Sarara with one slap. Wu Biao healed himself with Hellfire and prepared to fight Gouketsu, whose Dragon-level strength had frightened the martial artists.

  • Wu Biao ate more than fifty Monster Cells and asked Gouketsu for water, leaving the martial artists stunned.
  • Saitama took off his tracksuit, jumped into the arena, and reunited with Wu Biao.
  • Sarara lunged at Saitama, who killed him with a single slap.
  • Wu Biao handed Saitama the tournament trophy and prize money before declaring he would defeat Gouketsu.
  • Gouketsu boasted of his Dragon-level rank, and Wu Biao unleashed Hellfire that healed his wounds and restored his lab coat.
  • Wu Biao advanced toward Gouketsu, eager to fight the monsters of the Monster Association and grow stronger.

Ch. 410The End (Fourth Update)

Wu Biao defeated Gouketsu with his Hellfire-enhanced strength and absorbed the power from his death. He left the ruined venue with Saitama, whose hair Wu Biao immediately began teasing, while the other contestants watched in shock.

  • Wu Biao activated Limit Mode and faced Gouketsu, who struck him with a kick powerful enough to destroy the arena.
  • Wu Biao blocked Gouketsu's kick, threw him into the air, and kicked him deep into the ground.
  • Gouketsu emerged battered and charged again, but Wu Biao's full-strength punch shattered him into blood mist.
  • Wu Biao absorbed the power from Gouketsu's death and headed toward Saitama, plotting to test his increased strength on him.
  • Wu Biao and Saitama bickered as they left, leaving the contestants stunned.

Ch. 411Inexplicable

Saitama attacked Wu Biao at dawn, and the two began a fierce fight in Z-City’s uninhabited outskirts. Meanwhile, Lord Nyan led Gums, Evil Natural Water, and other monsters into Ghost Town to choose a base, unaware that the sudden silence had interrupted the fight’s rumbling.

  • Saitama punched Wu Biao out of bed and sent him flying several kilometers through buildings.
  • Wu Biao saw Saitama’s nearly bald head, and Saitama charged him for a fight.
  • Wu Biao met Saitama’s charge, and their clash sent a thunderous shockwave across Z-City.
  • Lord Nyan dismissed rumors about Ghost Town and led Gums, Evil Natural Water, and the monsters into the deserted city.
  • Lord Nyan stayed behind the other two Dragon-level monsters as the group advanced toward the continuing rumbling.
  • The rumbling suddenly stopped.

Ch. 412Dangerous Area...

Wu Biao and Saitama fought across the outskirts of Z-City, while Nyan fled Ghost Town after an attack erased Gums and Evil Natural Water. By night, humans and monsters feared Ghost Town, and Wu Biao and Saitama paid to restore the zone’s utilities.

  • An invisible purple impact tore through Ghost Town, killing Gums and Evil Natural Water and scattering the monsters.
  • Nyan ordered the surviving monsters to flee and decided to report Ghost Town as forbidden territory to the Monster King.
  • Wu Biao fought Saitama at full strength as Saitama blamed him for his sudden baldness.
  • The Hero Association investigated the destruction in Ghost Town, while monsters spread rumors about its dangerous resident.
  • Wu Biao and Saitama paid three million to repair the uninhabited zone’s water, electricity, and gas.

Ch. 413The Challenger?

Wu Biao and Saitama went to Bang’s dojo, where they overwhelmed Garou and helped themselves to the dojo’s food while waiting for Bang. The chapter ended with Bang arriving and confronting the unexpected visitors.

  • Wu Biao kicked open the dojo gates and announced that he and Saitama had come to visit Bang, who was away.
  • Wu Biao ignored Sour Face and entered the dojo, then slammed Garou into the ground when Garou blocked his path.
  • Saitama slapped Garou down again when Garou tried to grab him, and the two visitors went inside to eat.
  • A disciple recognized Saitama as the martial arts tournament champion, and Garou asked Sour Face for a recording of Saitama’s match against Bang.
  • Bang returned to the dojo and found Wu Biao carrying a rice barrel with Garou hanging from his arm.

Ch. 414Preparing to Leave (End of Volume)

Wu Biao visited Bang’s dojo with Saitama, ate the leftover food, and arranged to learn the Water Stream Rock Smashing Fist without becoming Bang’s disciple. He told Saitama he was leaving now that his work was finished, and the chapter ended with their farewell.

  • Bang welcomed Wu Biao and Saitama to the dojo and asked Wu Biao to join as his disciple.
  • Wu Biao explained that he already had a master, Master Kanonji, and identified himself as the Chief Disciple of Kanonji Style.
  • Wu Biao proposed fighting Bang regularly to learn the Water Stream Rock Smashing Fist, but Bang offered to let him join the dojo as an inheritor instead.
  • Wu Biao agreed to learn the style and told Saitama that he planned to go home because his work was finished.
  • Wu Biao teased Saitama as they parted, promising to visit again and telling him to get stronger.

Ch. 415Home

Wu Biao returned from Soul Society and visited the Kurosaki family, where he learned Kurosaki Ichigo and Kurosaki Orihime had waited for him before getting married. The family laughed together as they welcomed him home, and Wu Biao was told to return to Soul Society after eating.

  • Wu Biao visited Kurosaki Ichigo's home after returning from a long absence and shared a meal with Ichigo and Inoue Orihime.
  • Inoue Orihime revealed that she now used the name Kurosaki Orihime, but she and Ichigo clarified that they were not yet married.
  • Kurosaki Isshin and Kurosaki Masaki arrived home and explained that Orihime had moved in six months earlier and that the couple had wanted to wait for Wu Biao before marrying.
  • Wu Biao agreed to witness Ichigo and Orihime's wedding and joked that Orihime had become pregnant before their marriage.
  • Kurosaki Isshin scolded Wu Biao for his blunt remarks, and the family laughed together at his unchanged personality.

Ch. 416This, can we cut it already!

Two-year-old Unohana Aya secretly bought candy on her father Wu Biao’s tab, unaware he had returned to Soul Society and was heading home with toys. When she mistook him for a thief climbing her family’s wall, she drew her sword to attack him.

  • Unohana Aya left the 4th Division barracks and secretly went to a shop to buy candy on Wu Biao’s tab.
  • Aya told the shopkeeper that her father was away catching bad guys and that Auntie Soi Fon was coming to teach her Shunpo.
  • Wu Biao arrived at the shop with a huge bundle of toys for Aya, then hurried after her without learning she had just left.
  • Unohana Retsu came to pay Aya’s bill, learned Wu Biao had returned, and rushed out after him.
  • Aya spotted Wu Biao on the family wall carrying the bundle, mistook him for a thief, and drew her sword to attack.

Ch. 417Made Them Cry...

Wu Biao encountered his daughter Aya at the gate, where she mistook him for a thief and demanded to fight. He played along until he knocked away her Zanpakuto and made her cry, and the chapter ended with Aya calling him Daddy.

  • Aya attacked Wu Biao with her Zanpakuto, but he recognized her by her scent as his daughter.
  • Wu Biao set down the toys and agreed to play when Aya explained that her mother forbade her from chopping people unless they bullied her.
  • Aya launched a series of attacks, and Wu Biao dodged while praising her swordsmanship.
  • Wu Biao counterattacked with a slowed punch and kick, sending Aya crashing into the wall and knocking her Zanpakuto away.
  • Aya burst into tears and cried that Daddy was bullying her, leaving Wu Biao stunned.

Ch. 418Warmth

Wu Biao reunited with Unohana Retsu and their daughter Aya at home after returning from another world, where he told his wife about meeting a powerful bald man. The family settled into a warm evening together, with Aya playing and training plans continuing.

  • Wu Biao struggled to comfort Aya after their fight, and Unohana Retsu reprimanded him before teaching Aya to kill enemies who threatened her.
  • Aya recognized Wu Biao from a family photo, and he carried her home with Unohana Retsu and the toys he had brought from the Human World.
  • Wu Biao encouraged Aya to train with him, while Unohana Retsu limited her candy and took her to change after the fight.
  • Wu Biao relaxed at home and told Unohana Retsu about his latest trip and the strong bald man he had met.
  • Soi Fon took Aya to the Second Division to practice Shunpo, and Unohana Retsu said she had refused Kenpachi Zaraki's request for Aya to join the 11th Division.

Ch. 420Reappearance

Three years later, Renji Abarai guarded Aya Unohana and Ichika Abarai in City T, where the Gotei 13 had become the city’s leading hero agency. Aizen Sosuke returned, abducted Aya after staging a false distress call, and left Renji to find Aya standing amid a street full of corpses.

  • Renji Abarai took Aya Unohana and Ichika Abarai out in City T, where residents greeted him as the Gotei 13’s local hero.
  • After a distant explosion, Renji received a false distress signal and left Aya and Ichika in Aya’s care before heading to investigate.
  • Aizen Sosuke confronted Aya and Ichika in an alley, knocked Ichika unconscious, and reached for Aya.
  • Renji discovered that no distress signal had been sent, found Ichika unconscious, and followed Aya’s spiritual pressure.
  • Renji found Aya unharmed but surrounded by dead men in black suits, while she stood confused with her Zanpakuto in hand.
  • Ichimaru Gin questioned Aizen about targeting Aya, and Aizen said he intended to give her father a new opponent.

Ch. 421Urahara Kisuke's Return

Aya Unohana’s account confirmed that Aizen Sosuke had returned and used a planted suggestion to bring her to the underground base, where he incapacitated a group without harming her. Wu Biao set out to confront Aizen as the Seireitei went on high alert, and Urahara Kisuke and Shihoin Yoruichi returned with information from the Hero Association.

  • Unohana Retsu questioned Aya, who identified the attacker as the man shown on Mayuri Kurotsuchi’s screen, confirming he was Aizen Sosuke.
  • Shunsui Kyoraku concluded that Aizen had planted a suggestion in Renji Abarai’s senses, prompting him to bring Aya to the base.
  • Wu Biao left to pursue Aizen, while Captain-Commander Yamamoto ordered a Level One alert and martial law across the city.
  • Mayuri Kurotsuchi’s investigation revealed that the incapacitated group was the staff of an S-Class Hero Agency previously reported dead.
  • Urahara Kisuke and Shihoin Yoruichi returned, and Urahara plugged in a USB drive containing information he had copied from inside the Hero Association.

Ch. 422Chapter 401

Urahara Kisuke explained how Aizen may be connected to Revolution, an organization behind experiments that briefly gave people extraordinary power. Aizen then appeared in the laboratory and confirmed that the dead test subject belonged to Revolution’s Seven Gods program.

  • Urahara Kisuke showed the group Hero Association records tracing Aizen’s past and described the association’s strongest heroes.
  • Urahara Kisuke explained that people injected with a strange liquid had caused deadly incidents around the world, and he suspected Aizen was trying to provoke conflict with the organization behind them.
  • Urahara Kisuke deduced that the God-level monster in the old story may have been created through the same experiments and that Aizen might have joined the organization.
  • Aizen entered the laboratory, identified the dead young man as one of Revolution’s Seven Gods test subjects, and warned that Revolution would retaliate.

Ch. 423Obsession

Aizen Sosuke appeared at the Soul Society headquarters, explaining that he had come to provide information rather than fight. He revealed how he had evaded Wu Biao’s tracking and described Revolution’s obsession with creating a god, leaving Urahara Kisuke asking about the Seven Gods experimental subjects.

  • Soi Fon drew her Zanpakuto and joined Unohana Retsu in protecting Aya when Aizen Sosuke appeared.
  • Aizen told the captains that he was acting as a system character providing information and admitted Wu Biao was far stronger than him.
  • Aizen explained that a special gas covering the city concealed his scent from Wu Biao, while Urahara Kisuke identified how Yoruichi could detect it.
  • Aizen described Revolution as an organization driven by an obsession with creating a god, whose actions after creation could threaten the world.
  • Urahara Kisuke asked Aizen what the Seven Gods experimental subjects were.
Arc 16 of 17