Chapter Summaries

After a Space-Time Passage collapsed, Vegapunk landed in the One-Punch Man World and recovered in Saitama’s home. A month later, Vegapunk moved into a new house in Z-City and went to visit the House of Evolution.

• Vegapunk was thrown into Z-City, where Saitama found him and brought him home after a building collapsed on him during a fight with Monsters.
• Vegapunk healed himself with Chakra, learned he was in the One-Punch Man World, and persuaded Saitama to let him stay in exchange for gold rent.
• During the next month, Vegapunk studied the timeline while Saitama defeated Monsters and agreed to sell their remains for research.
• Vegapunk told Saitama he had bought a house and would move out, promising to pay for any Monsters Saitama brought him.
• Vegapunk arrived at the House of Evolution, intending to meet one of the world’s leading scientists.

Vegapunk seized control of the House of Evolution and made Dr. Genus his assistant, then brought Saitama there to test his supposedly broken Limiter. Saitama killed Beast King and agreed to meet the scientists, leaving Dr. Genus and the Vegapunks preparing to examine him.

• Vegapunk used his Electromagnetic Ability to take over the House of Evolution and persuaded Dr. Genus to serve as his assistant.
• Vegapunk contacted Saitama and arranged for him to bring Monster remains to the House of Evolution.
• Saitama arrived with a pile of Monster corpses, and Beast King mocked him before Saitama killed him with one punch.
• Vegapunk warned Armored Gorilla that he would have to compensate for damage, so Saitama spared him and Armored Gorilla carried the experimental materials inside.
• Dr. Genus and his Clones questioned whether Saitama had broken his Limiter as Vegapunk and his Clones prepared to test him.

Saitama underwent tests that astonished Dr. Genus, but he put off joining the Hero Association after earning money from his blood. Vegapunk joined the Association with Mosquito Girl and Carnage Kabuto, and months later Hellish Blizzard arrived at the House of Evolution to recruit them.

• Vegapunk explained the Hero Association to Saitama, who agreed to join when he learned heroes were paid, then completed tests that shocked Dr. Genus with his strength.
• Dr. Genus paid Saitama for blood samples, and Saitama postponed registering until he had spent the money.
• Vegapunk said he had used artificial Human-Human Fruits to restore the Monsters' rationality, then joined the Hero Association with Mosquito Girl and Carnage Kabuto.
• Vegapunk used Genjutsu to secure perfect exam scores for all three, but they entered as low-ranked B-Class Heroes, and he sent a Wood Clone to earn merits.
• Months later, Hellish Blizzard arrived at the House of Evolution with her subordinates to recruit Vegapunk, Mosquito Girl, and Carnage Kabuto into the Blizzard Group.

The Blizzard Group came to the House of Evolution hoping to recruit Vegapunk, but Armored Gorilla drove them back before Zombieman arrived to investigate the laboratory. Vegapunk and Saitama then returned, and Zombieman questioned whether the House of Evolution was still conducting human experiments as Carnage Kabuto defended Saitama.

• Dr. Genus learned that the Blizzard Group had come to recruit Vegapunk, Mosquito Girl, and Carnage Kabuto, and ordered his subordinates to throw them out.
• Armored Gorilla emerged from the House of Evolution and intimidated the Blizzard Group, while Fubuki tried to explain their peaceful purpose.
• Zombieman arrived and confronted Armored Gorilla, who revealed that he had been turned human through Vegapunk's research.
• Vegapunk returned with Mosquito Girl, Carnage Kabuto, and Saitama, and Zombieman accused them of continuing human experiments.
• Carnage Kabuto leaped to Saitama's defense after Zombieman called him bald.

Vegapunk persuaded Fubuki to train at the House of Evolution and studied Zombieman’s unusual regeneration. After Fubuki’s telekinesis improved through training, Vegapunk revealed that the real enhancement had not begun yet.

• Vegapunk restrained Zombieman and offered to strengthen Fubuki’s psychic powers, so she agreed to try his training.
• Vegapunk examined Zombieman’s blood and learned from Dr. Genus that his energy-free regeneration came from opening part of his limiter.
• Vegapunk developed a genetic enhancement plan for Fubuki and trained her while allowing her freedom in the House of Evolution.
• Fubuki shared a hot pot meal with Vegapunk and Saitama, then learned that the food included monsterized animals and plants.
• Vegapunk found Fubuki’s brainwave activity had risen by thirty percent, and she reported that her telekinesis was several times stronger and let her fly.
• Vegapunk told Fubuki that the real work of strengthening her telekinesis was about to begin, leaving her surprised that her previous training had only been preparation.

Vegapunk used a dangerous brain-modification experiment to enhance Fubuki’s psychic talent, but Tatsumaki attacked the House of Evolution after seeing her unconscious sister. Vegapunk defeated Tatsumaki with a surprise technique and left her unconscious.

• Vegapunk explained that psychic growth depended on talent and prepared to improve Fubuki’s potential through brain modification.
• Vegapunk fitted Fubuki with an electromagnetic helmet and injected her with a stabilized limiter-breaking drug, leaving her unconscious after a painful transformation.
• Tatsumaki tore open the House of Evolution, accused Vegapunk of harming Fubuki, and attacked him with a spear made from the building.
• Vegapunk fought Tatsumaki with lightning, spatial evasion, and Truth-Seeking Orbs, but her psychic power overwhelmed his attacks.
• Vegapunk connected Tatsumaki’s shadow to his own, forced her to press her carotid artery, and made her pass out.

Tatsumaki woke captive at the House of Evolution, where Vegapunk demanded compensation for the damage she had caused and arranged for her to work off the debt. After Saitama knocked her out when she tried to attack, Tatsumaki woke again and agreed to see how much Fubuki’s superpowers had improved.

• Tatsumaki awoke wearing a power-restricting Collar and learned from Fubuki that she was safe at the House of Evolution.
• Vegapunk presented Tatsumaki with a bill for 3.6 billion dollars and offered for her to repay it by working and providing biological samples.
• Tatsumaki agreed to the repayment plan, then tried to attack Vegapunk after he removed her Collar, so Saitama knocked her unconscious for a bonus.
• Vegapunk replaced Tatsumaki’s Collar, and she later argued with him through an Electronic Screen about his experiments on Fubuki.
• Tatsumaki agreed to see Fubuki demonstrate the increased superpowers Vegapunk said his research had produced.

Fubuki tested her greatly enhanced psychic strength and control, while Tatsumaki continued paying off her debt to Vegapunk by collecting monster materials. Months later, Vegapunk had risen to S-Class and was away at the Hero Association when every hero received a summons, prompting Tatsumaki to head there and wonder whether Fubuki would be present.

• Fubuki lifted compressed alloy blocks weighing up to ten thousand tons individually and held more than fifty thousand tons before testing her control on nearly ten thousand whack-a-mole holes.
• Fubuki suppressed around twelve hundred popping balls before her psychic control slipped, then said she wanted to become the number one A-Class Hero.
• Over the following months, Vegapunk advanced his monster research and became an S-Class Hero after subduing Tatsumaki.
• Tatsumaki delivered a giant scorpion to the House of Evolution, where Armored Gorilla credited thirty million toward her debt and told her she still owed three and a half billion.
• Tatsumaki learned that Vegapunk was meeting the Hero Association and received a summons sent to every hero, so she flew to headquarters while wondering whether Fubuki would be there.

Tatsumaki arrived at Hero Association headquarters and learned that Vegapunk had developed a widely accessible Chakra Training System that had strengthened Fubuki’s Blizzard Group. Vegapunk began explaining the system to the gathered heroes, with Fubuki set to demonstrate its power.

• Tatsumaki arrived at Hero Association headquarters and noticed that Fubuki’s Blizzard Group had grown much stronger.
• King told Tatsumaki that Vegapunk planned to test his Chakra Training System on heroes, and King admitted he was interested in learning it.
• Child Emperor arrived and exchanged words with Metal Knight before Vegapunk joined them.
• Vegapunk and the gathered heroes entered a venue, where the host announced that Fubuki would demonstrate Chakra.
• Vegapunk explained that Chakra came from combining physical and spiritual energy and could be learned by ordinary people who received a Chakra Seed, prompting an uproar among the heroes.

Vegapunk promoted the Chakra Training System through the Hero Association, attracting heroes with its rapid gains and arranging for them to collect live Monsters for his experiments. The chapter ended when Fubuki brought King to Vegapunk’s Laboratory to obtain a Chakra Seed, despite King’s inability to capture a Monster himself.

• Vegapunk explained to Child Emperor that he had brought the Hero Association under his control and intended to use its mission system to guide heroes toward Chakra.
• Fubuki demonstrated how Chakra amplified her abilities, impressing the lower-ranked heroes and becoming the first-ranked A-Class Hero while Sweet Mask advanced to S-Class.
• Heroes flocked to Vegapunk for Chakra Seeds, agreeing to capture live Monsters for his research into mutation-inducing drugs.
• Over half a month, the lower-ranked heroes gained Chakra and improved their strength as Monster specimens arrived at Vegapunk’s Laboratory.
• Fubuki brought King to meet Vegapunk, assuming King had come to learn Chakra, while Vegapunk recognized him as the S-Class Hero whose reputation concealed his lack of combat ability.

Vegapunk revealed that King was an ordinary shut-in who had taken credit for monsters Saitama defeated, then offered to make him strong using a customized enhancement and King’s extraordinary luck. King survived a Monster Cell Liquid transformation and emerged as a powerful four-meter-tall being with energy capable of challenging Dragon-level Monsters.

• Vegapunk sent Fubuki and Child Emperor out, then explained that he knew King had not defeated the Monsters credited to him.
• King admitted that he was an ordinary person whose Emperor Engine was only his nervous heartbeat, and Vegapunk promised to keep his secret.
• Vegapunk offered King a customized enhancement, using the Luck Glove to turn King’s extraordinary luck toward a successful transformation.
• Vegapunk put King into a tank of Monster Cell Liquid, and King used the Luck Glove to protect his sanity and strengthen himself.
• King transformed into a four-meter-tall Monster-like being, and Vegapunk judged that his energy could challenge Dragon-level Monsters.

Vegapunk finished enhancing King, whose Monster form, Emperor Engine, and Genjutsu made him a powerful but still comparatively low-ranked S-Class Hero. After Saitama killed the Safe Monster that had stolen his gold, a Dragon-level threat appeared in City A, and Vegapunk prepared to send Saitama there using ninjutsu.

• Vegapunk restored King to human form, then strengthened him with Chakra, which awakened a fear-inducing Genjutsu Kekkei Genkai.
• King tested his new Emperor Engine by frightening Monsters and brought them to Vegapunk as repayment and publicity.
• Saitama found that a Safe Monster had stolen his gold and killed it with a punch, accidentally sending the Monster's stored gold to King.
• Saitama confronted Vegapunk over the Safe Monster, but Vegapunk denied responsibility and suggested he hunt more Monsters for money.
• Vegapunk received an emergency alert that Vaccine Man had destroyed City A, and Saitama eagerly set out to fight the Dragon-level Monster.
• Vegapunk stopped Saitama from running to City A and brought him to a launch platform, preparing to use ninjutsu to send him there.

Vegapunk transported Saitama to City A to stop Vaccine Man, who was attacking the city. Saitama weakened the monster, and Vegapunk captured and sealed him before the arriving Heroes credited Vegapunk with the rescue.

• Saitama and Vegapunk arrived in City A, where Vaccine Man had already defeated several Heroes and was wreaking havoc.
• Vaccine Man attacked Saitama and Vegapunk with an energy beam, but Saitama emerged unharmed and agreed to capture him alive for compensation.
• Vaccine Man grew into a giant, but Saitama broke his leg and arm; Vaccine Man regenerated, attacked, and tried to flee.
• Vegapunk pulled Vaccine Man back and sealed his senses after the monster had exhausted much of his energy fighting Saitama.
• Vegapunk stored Vaccine Man and his severed limbs, then promised Saitama compensation as nearby Heroes arrived and praised Vegapunk while overlooking Saitama.

After Saitama joined the Hero Association, Vegapunk and Dr. Genus investigated Planet Will and studied material from a giant Monster, while Saitama’s rank rose to tenth in B-Class despite others overlooking his strength. Fubuki then warned that an unusually tough meteor was on course to strike Z-City, and Vegapunk realized its material could be a valuable research subject.

• Saitama told Vegapunk he wanted to join the Hero Association, and Vegapunk gave him a cheating earpiece without mentioning he could recommend him directly for A-Class.
• Vegapunk and Dr. Genus found traces of a will enveloping the planet, with the strongest readings near Z-City and the Hero Association’s city.
• Fubuki brought the research team a giant’s fingertip and reported that King had received credit for defeating the giant, while Saitama had risen to tenth in B-Class.
• Fubuki warned Vegapunk that a massive meteor was heading toward Z-City and that missiles and energy weapons had failed to damage it.
• Vegapunk concluded that the meteor was made of unusually advanced, resistant material and became eager to investigate it.

Vegapunk stopped the meteor from destroying Z-City by redirecting it into his Portable Space, though his intervention sent Saitama flying into another city. Afterward, the group gathered at the House of Evolution, where Bang praised Vegapunk’s physique and offered to teach him Water Stream Rock Smashing Fist, but Vegapunk declined.

• Bang, Metal Knight, and Genos gathered on a rooftop as the meteor approached, and Metal Knight’s barrage failed to damage it.
• Genos fired his Incinerate Cannon at the meteor, exhausted his energy, and collapsed after Bang pointed out that it had not slowed.
• Vegapunk arrived through a Space Gate and prepared to handle the meteor, but Saitama leaped toward it to protect his home.
• Vegapunk used Flying Thunder God Lightning Guidance to redirect the meteor and store it in his Portable Space, while Saitama flew into the sky and landed in another city.
• Vegapunk promised Metal Knight meteor samples, then returned to the House of Evolution with Bang, Genos, and Saitama.
• Bang demonstrated Water Stream Rock Smashing Fist and offered to teach Vegapunk, who declined because he preferred research to martial arts training.

Vegapunk tried to get Bang to teach Saitama Water Stream Rock Smashing Fist, but their game of rock-paper-scissors head bonking ended with Saitama flattening Bang’s dojo. After Bang left, Vegapunk upgraded Genos and forged powerful armor from the meteor’s metal, leaving the heroes prepared for future threats.

• Vegapunk urged Bang to teach Saitama Water Stream Rock Smashing Fist, and Bang challenged Saitama to a game of rock-paper-scissors head bonking.
• Saitama finally won a round and swung the plastic hammer at Bang, but Bang dodged as Vegapunk’s Flying Thunder God Formation transferred Saitama away.
• Saitama’s strike flattened the mountain containing Bang’s dojo, and he returned carrying Charanko, whose leg had broken in the destruction.
• Bang accepted that the dojo was gone and left with Charanko, while Saitama stayed at the House of Evolution with Genos.
• Vegapunk upgraded Genos with greater power, Memory Metal, lasers, and a Lightsaber.
• Vegapunk refined the meteor metal, tested its ability to disrupt energy-based defenses, and forged himself a suit of armor.

Vegapunk tested his newly completed Meteor Armor against the Sea Tribe invading J-City, discovering its powerful shock absorption and electromagnetic weapons. As the invasion overwhelmed the military and he failed to find the Deep Sea King, Vegapunk unleashed a vast lightning storm to wipe out the Sea Tribe.

• Vegapunk finished the Meteor Armor and decided to test it when the Sea Tribe invaded J-City.
• Vegapunk flew to the coast and killed the Octopus Monster, confirming that the armor absorbed impacts and amplified his electromagnetic attacks.
• Vegapunk killed humanlike Sea Tribe creatures and stored giant crabs and lobsters in his Portable Space, but thousands of kills failed to stop the invasion.
• The military and heroes fought the Sea Tribe, but powerful attackers overwhelmed the troops and Vegapunk decided to intervene.
• Vegapunk spread dark clouds over the coast and electrocuted Sea Tribe members on land and in the sea while searching for the Deep Sea King.

The Deep Sea King escaped the battlefield through the sewers, regained much of his strength in the rain, and fought Puri-Puri Prisoner and Speed-o'-Sound Sonic. As he headed for the coast, he encountered Saitama outside a supermarket, unaware of the danger he faced.

• The Deep Sea King emerged from the sewers on the far side of the city and absorbed the rain, restoring his strength but leaving him too large to return underground.
• Puri-Puri Prisoner and Speed-o'-Sound Sonic confronted the Deep Sea King, who defeated Puri-Puri Prisoner with one blow.
• The Deep Sea King overpowered Sonic as the rain strengthened him, then continued toward the coastline without killing either hero.
• Saitama spotted the Deep Sea King near a supermarket and considered taking him to Vegapunk's Laboratory for a reward.
• The Deep Sea King asked Saitama whether he was a hero and warned him that an S-Class Hero had already tried to stop him.

Saitama and Mumen Rider confronted the Deep Sea King during the invasion, and Vegapunk captured him for research. Tests revealed that the Deep Sea Race had recently mutated from humans, so Vegapunk began extracting the Deep Sea King's memories to discover who had created them and altered their memories.

• Mumen Rider opened the Sixth Gate and battled the Deep Sea King, but the strain eventually left him injured and unable to fight.
• The Deep Sea King tried to flee when Vegapunk arrived, but Saitama tore off one of his arms before Vegapunk incapacitated him with lightning.
• Vegapunk captured the Deep Sea King and took him to his laboratory, while Saitama complained that Vegapunk had taken his prey and its potential reward.
• Vegapunk, Child Emperor, and another scientist found that the Deep Sea Race had mutated from humans within the past five to ten years.
• Vegapunk extracted the Deep Sea King's memories to investigate who had created the Deep Sea Race and implanted its false history.

Vegapunk recovered the origin of the Deep Sea Race, found its Mother Nest, and brought it back to his laboratory. He began cultivating a god-level body from his own embryo and planned to use Saitama as a safeguard, while seeking more Monster nourishment and another Mother Nest.

• Vegapunk, Dr. Genus, and Child Emperor watched memories showing the Deep Sea Race being produced by a Flesh Hive from human and marine-creature corpses.
• Vegapunk found the Mother Nest in a deep-sea trench, froze it to halt the powerful creature developing inside, and brought it to his laboratory.
• Half a month later, Vegapunk and the other scientists discussed how many Demon-level Monsters the embryo needed to mature and how dangerous it might become.
• Vegapunk said he would rely on Saitama to destroy the creature if it lost control, leaving Child Emperor and Dr. Genus speechless.
• Vegapunk revealed that the embryo was his original body, which he intended to modify into a god-level Monster before transferring his soul into it.
• Vegapunk decided he needed more nourishment and considered taking the Sky Race's Mother Nest and asking Saitama to deal with the Monster Association.