Chapter Summaries

Teppei investigated Misa’s blue flames and helped Bai Ge defeat the Formigg possessing her, but Misa lost her memories afterward. Later, Mirai suffered defeat at the hands of the Refrate Star People, and Ultraman Leo arrived on Earth to challenge him.

• Takamura told Teppei that Misa had been plagued by blue flames since their boat encountered a mass of azure fire, and Teppei suspected a creature was parasitizing her.
• Teppei connected Misa’s possession to Formigg, whose attacks would be transferred to her, and Bai Ge destroyed the monster with Azure Demon Flame after Mirai hesitated to attack.
• Misa survived but lost her memories, leaving Teppei heartbroken even as he said he had done everything he could to protect her.
• The Refrate Star People defeated Mobius in battle, and Mirai sensed someone calling him afterward.
• Mirai and the GUYS members met Feng Yuan, Ultraman Leo, at a gravestone on the Island of Tragedy, where Leo challenged Mirai to fight.

Feng Yuan tested Mobius and GUYS before entrusting Earth to them, and Mirai defeated the Refrate Star People with Leo’s guidance. Later, the Barbal Star People impersonated Ultraman Hikari and framed Serizawa, while the real Hikari returned to Earth and faced the impostor’s scheme.

• Feng Yuan transformed into Ultraman Leo, defeated Mobius in a test, and told GUYS he would not entrust Earth to them until they could win their battles.
• Bai Ge taught Mirai a breathing technique, and GUYS helped him train before the Refrate Star People appeared again.
• Mirai used a spinning attack against the Refrate Star People, and Leo joined him to destroy the enemy and entrust Earth to GUYS.
• A blue impostor attacked the city as Sword, and Bai Ge identified the enemy as the Barbal Star People, who had disguised himself as Astra before.
• Serizawa returned as the real Ultraman Hikari, while the Barbal Star People used public distrust to frame him and the Director ordered his detention.
• The Barbal Star People taunted the detained Hikari, unaware that Serizawa recognized the scheme and had an alibi.

Mirai brought Past, a Cheeno Alien girl who claimed to be his little sister, back to Phoenix Nest and tried to teach her to respect Earth’s rules. After bonding with the team, Past reunited with her companions and faced the choice of fighting Mirai herself.

• Ultraman Hikari defeated the Barbal Star People, then Serizawa thanked his teammates and left to investigate the threat approaching Earth.
• After the team drove Mud Monster Angross underground, Mirai found an unconscious girl and brought her to Phoenix Nest, where she impulsively called herself his little sister.
• Mirai explained that Past was a Cheeno Alien who used psychic powers for pranks, and he stopped her from frightening Toriyama and urged her to follow Earth’s rules.
• Mirai told Sakomizu that Past’s people had lost their planet because of their powerful psychic abilities, and the team welcomed her with a barbecue party.
• The next morning, Past’s companions urged her to attack Mirai, but she insisted on defeating him herself until Bai Ge pointed out that she already cared about him as a brother.

Past revealed that a Space-Time Wave had drawn alien threats to Earth before leaving with his companions. GUYS and the Coast Guard then joined forces against Ariegera, whose challenge drew Ultraman Mebius into battle.

• Bai Ge defeated Angross without harming Past, and Past told Mirai that a Space-Time Wave had summoned threats to Earth before departing.
• Sakomizu shared an archived message from an Ultra Warrior with Mirai, who recognized it as the words of his elder brother.
• Ariegera appeared near the Boso Peninsula, wounded Mirai, and was driven into the Pacific Ocean Sea Trench by Isamu Yo in Ocean Wing.
• Isamu joined GUYS and inferred that Ariegera wanted to fight Mebius, then worked with the team to lure it toward artificial land using sonar boxes.
• During the deep-sea operation, Ariegera attacked Sea Wing's systems, and Mirai transformed into Mebius to protect it.

Mebius defeated Ariegera, and Isamu revealed that he had become the new captain of guys Japan Branch and already knew Mirai’s identity. Later, Hinode Sayuri appeared to recover from a fatal accident, but a Sarnpent Alien possessing her attacked the base; as the aliens moved to destroy the main system, the possessing alien suddenly convulsed in pain.

• Mebius split Ariegera with Mebium Light Sword, impressing Isamu, Ryu, Sadaji, and Bai Ge with his strength.
• Isamu revealed himself as the new captain of guys Japan Branch, then left Ryu a note showing he had known Mebius’s identity.
• Hinode Sayuri saved a child in a traffic accident and was later declared dead, but she unexpectedly woke up after a Sarnpent Alien possessed her body.
• Bai Ge and the guys members responded when the base lost power and found the aliens in the power room; Bai Ge destroyed their spatial transport device.
• The Sarnpent Alien revealed its identity and ordered its companions to destroy the main system, but it abruptly collapsed in pain.

Hinode Sayuri defeated the Sarnpent Alien and helped Mobius destroy its giant form, then used her remaining powers to help people. Later, a flower-headed attacker paralyzed Mirai, and GUYS traced the creature’s lair to a mountain forest, where Mirai spotted a familiar white-robed figure.

• Hinode Sayuri resisted the Sarnpent Alien’s possession, fought it, and revealed that salt was its weakness, allowing Mobius to destroy the giant alien.
• Sayuri used her lingering superpowers to race through town and save a child from a car.
• A flower-headed white-robed attacker abducted a woman, then sprayed pollen into Mirai’s eyes when he intervened and left him unconscious.
• Bai Ge brought Mirai to the GUYS medical center, where Sakomizu linked the attacker to a rise in missing-person cases.
• Teppei traced pollen on Mirai to a forest lair, and Bai Ge sensed the path leading to it.
• GUYS found a white-robed figure walking with a student, and Mirai recognized the figure’s familiar back.

Mirai and Bai Ge stopped a vine creature from assimilating Naoko and the others, while Naoko helped the victims face their loneliness. Twenty-five years later, a monster appeared at Yano Takeshi's former students' reunion, and Ultraman Eddie arrived as Mobius struggled to understand what it wanted.

• The vine creature tried to assimilate Naoko, but Bai Ge burned the vines and Naoko comforted the freed child as Mirai watched.
• Twenty-five years later, Mirai sensed a familiar power and helped Ultraman Eddie defeat Disk Creature Loberag II.
• Tsukamoto invited Yano Takeshi to his former class's reunion, and Eddie asked Mirai to tell his students that he was sorry.
• Mirai and Bai Ge attended the reunion, where negative energy summoned a monster that wandered without attacking.
• The monster suppressed Mobius and seemed to cry before Ultraman Eddie descended.

After bidding farewell to Teacher Yano and his former students, the GUYS team learned that Gomora had appeared on Janson Island and welcomed Chairman Takenaka. Takenaka reunited with Sakomizu and handed him a special key, but an alarm interrupted their conversation as Red King attacked Tatara Island.

• Ultraman Eddie defeated the monster at Sakuragaoka Junior High School, then Yano Takeshi went to thank his former students in person.
• Misaki Yuki reported Gomora's appearance on Janson Island, though it vanished before local forces arrived.
• Chairman Takenaka visited the GUYS Japan Branch and privately discussed Sakomizu's past encounter with Ultraman and his return to Earth.
• Takenaka gave Sakomizu a special key, but an alarm announced Red King's appearance on Tatara Island.
• The GUYS team attacked Red King, whose strength and endurance exceeded those of its previous kind, while Takenaka praised their performance.

After GUYS and Mebius defeated Red King and Gomora, Mirai and Bai Ge began investigating suspicious changes in Kobe’s waters, where they met Jinguuji Aya and Ultraman Seven and learned how the former Ultra Brothers had lost their powers sealing Yapool. The chapter left Mirai meeting a frightened boy named Takato near a stadium.

• Mebius and GUYS defeated Red King, then destroyed Gomora with Mebium Burst and the Infinity Phoenix Ray.
• Yapool argued with Grozam, Mefilas Alien, and Desrem, then disappeared while plotting to turn them into Chojus and defeat Mebius.
• Jinguuji Aya arrived to visit her grandfather Takenaka and invited Mirai to spend time with her.
• Bai Ge and Mirai traveled to Kobe, met Jinguuji Aya, and learned that Ultraman Seven, Hayata Shin, Hideki Go, and Hokuto Seiji had given up their transformation powers to seal Yapool beneath the sea.
• Jinguuji Aya showed Bai Ge and Mirai signs that marine life was being disturbed, then led them toward the research building.
• A young man introduced Takato to Mirai and Bai Ge, but Takato became frightened and ran away.

Bai Ge and Mebius fought the aliens who sought to revive Yapool’s Saurus, rescuing Jinguuji Aya and defeating Yapool. The story returned to the present, where Aya walked with Mirai and began explaining why she had come to see him.

• Mirai defeated Imperial Seijin, but Zarab Seijin drugged him, impersonated him, and used the disguise to frighten Takato before the real Mebius exposed and defeated him.
• Guts Seijin trapped Mebius in a crystal, while Nackle Seijin and Guts Seijin drained the energy of the four Ultra Brothers to release Saurus.
• Bai Ge killed Nackle Seijin and Guts Seijin, but Saurus revived; Zoffy and Taro arrived and shared their energy with the other Ultras.
• Bai Ge froze time and space so Mebius could rescue Jinguuji Aya from Saurus, then destroyed Yapool with Yellow Springs Heavenly Wrath.
• At Kobe Airport, Takato thanked Mirai for keeping his promise and declared that he would join GUYS; months later, Aya walked with Mirai and said she had not come only to see her grandfather.

Mirai and Jinguuji Aya were caught in Yapool’s trap while GUYS pursued the Space-Time Wave transmitter, and Mebius fought the powered-up Mebius Killer. After Mebius defeated it, Yapool separated Mirai from GUYS and attacked him in a strange domain, while a mysterious man guided GUYS into battle on the moon.

• Jinguuji Aya took Mirai on a date, while Yapool secretly watched them.
• GUYS traced the Space-Time Wave to offshore Okino Island and launched Phoenix Nest Base to destroy its source, but they could not contact Mirai.
• Yapool summoned Ace Killer, which merged with a dark entity to become Mebius Killer and overpower Mebius with his own attacks.
• Jinguuji Aya encouraged Mebius, who used Mebium Bomb to destroy Mebius Killer before reverting to human form from exhaustion.
• Phoenix Nest Base lost power and crashed on the moon, while an unknown man guided GUYS and Marina toward defeating the lunar Super Beast.
• Yapool separated Mirai and Jinguuji Aya into a devastated domain, revealed his true form, and attacked Mebius as Aya urged him to keep fighting.

Mirai regained his resolve with Hokuto Seiji’s help, and Ace and Mebius defeated Yapool before Seiji reunited with Yuko. After Desrem attacked the returning GUYS base and held hundreds of civilians hostage, Jack helped Mebius save them and destroy Desrem, while the injured GUYS members reunited; Grozam then prepared to challenge Mebius.

• Hokuto Seiji reminded Mirai that his companions’ will remained with him, and Mirai rose to fight Yapool again.
• Ace helped GUYS restore the base systems and destroy Lunaticks, while Mebius defeated Yapool and rescued Jinguuji Aya.
• Hokuto Seiji reunited with Yuko, and Aya kissed Mirai on the cheek before GUYS returned toward Earth.
• Desrem ambushed the Phoenix Nest Base through a space wormhole, but Bai Ge shielded it, leaving several GUYS members seriously injured.
• Desrem forced Mebius to choose between fighting and the lives of hundreds of hostages, but Jack blocked the detonation and helped Mebius defeat him.
• The injured GUYS members reunited at the hospital, and Grozam vowed to face Mebius and claim Earth.

Grozam froze a reservoir, defeated Mebius, and announced that the Emperor would come to Earth. Moroboshi Dan encouraged Kino Mi not to give up, while Mefilas Alien warned Grozam not to underestimate humanity.

• Grozam froze the reservoir and challenged Mebius after Mirai and Teppei investigated the sudden cold.
• Mirai transformed into Mebius, but Grozam regenerated from his attack, destroyed Flame Windom, and overcame Mebius's Brave Form.
• Grozam pierced Mebius with an ice spike, froze him to the dam, and announced that the Emperor would soon decide humanity's fate.
• Moroboshi Dan comforted Kino Mi and reminded her that humans had helped save the Ultra Warriors from past defeats.
• Grozam planned to use Mebius as bait for the Ultra Brothers, while Mefilas Alien warned him not to underestimate humans.

GUYS rescued Mirai from Grozam using the Magnalium Medical Beam and Maxwell Tornado, while Bai Ge joined the battle and Ultraman Seven departed. After Mirai returned from vacation pale and frightened, he told Bai Ge that he had seen Mephilas, the last of the Four Heavenly Kings.

• Fujisawa Asami and Director Misaki Yuki planned to free Mirai and defeat Grozam, with Marina and Kino Mi assigned to fly the Swan Wing and Loading Number.
• Bai Ge intervened against Grozam during the operation, allowing Marina to fire the Magnalium Medical Beam and restore Mirai's energy.
• Mobius, Ultraman Seven, and Bai Ge shattered Grozam, and Kino Mi used the Maxwell Tornado to burn his fragments.
• Ultraman Seven said goodbye to Mirai, while the hospitalized GUYS members later recovered and returned to duty.
• The team used the Memory Display Device to find Mirai during his vacation, and Captain Sakomizu asked Bai Ge to accompany him after he returned pale and sweating.
• At the park, Mirai told Bai Ge that he had seen Mephilas, the last of the Four Heavenly Kings.

Mefilas Alien altered humanity’s memories to turn GUYS and the children against Ultraman Mebius, but Mirai and Bai Ge helped his companions remember their bond and defeat Mefilas. After Mefilas left Earth, Emperor Seijin killed him for failing, and Mefilas reflected that even the Emperor could not break the bond between humans and Ultramen.

• Mefilas began a game against Mirai by altering human memories, making people see Mebius as an invader and ordering GUYS to attack him.
• Bai Ge protected Mirai from the attacks and helped him seek out Teppei, who secretly brought them into the GUYS base to investigate Mefilas's saucer.
• Mirai confronted GUYS with his flame-emblem amulet, and Teppei remembered their friendship and urged the others to remember theirs.
• The GUYS members recovered their memories, combined the Phoenix, and destroyed Mefilas's saucer as Mirai transformed and shielded them.
• Ultraman joined the fight, and Mefilas withdrew after admitting defeat and warning that Emperor Seijin would judge Earth.
• Emperor Seijin attacked and killed Mefilas in space, and Mefilas realized that the bond between humanity and the Ultramen could not be broken.

Emperor Seijin sent thirteen Impelzas to attack major world capitals and demanded that Earth drive Mebius away. After Bai Ge rejected the demand, Sakomizu appealed to humanity to stand with Ultraman as the deadline for the final battle approached.

• Emperor Seijin sent thirteen Impelzas toward the capitals of major nations and broadcast his demand that Earth drive Mebius away.
• Mebius and the Strong Strike Swan Phoenix destroyed several Impelzas, but Mebius exhausted himself fighting repeated reinforcements and vanished from the battlefield.
• Bai Ge crushed the next Impelza and told Emperor Seijin that Earth would resist the invasion rather than betray Mebius.
• Sakomizu revealed that he had concealed his identity as Director so he could fight alongside his team, then prepared a live address to the public.
• With one hour left before Emperor Seijin's deadline, Sakomizu urged humanity to support Ultraman and fight alongside him.

The people of Earth refused to surrender Mirai, and Mebius, GUYS, Zamsha, Bai Ge, and the Ultra Brothers fought Emperor Seijin. With the bonds between humans and Ultraman, Sakomizu’s Final Meteor Technology, and Bai Ge’s aid, they defeated the Emperor and saved Earth and the Sun; Mirai prepared to return home as Bai Ge departed through a spatial passage.

• People across the world urged Sakomizu and GUYS not to hand Mirai over, and the deadline passed as Emperor Seijin activated the Impelzas.
• Bai Ge destroyed the Impelzas, Zamsha and Past joined the fight, and Emperor Seijin crippled Phoenix Nest Base and overwhelmed Mebius, Hikari, and their allies.
• The Ultra Brothers encouraged the despairing GUYS members, and Mirai and Ryu united with their companions to transform into a new Mebius form powered by the Mebius Aura, Knight Aura, and their bonds.
• Sakomizu activated the Final Meteor Technology as Mebius, Zoffy, and Bai Ge attacked Emperor Seijin, who was defeated and transformed into light.
• The Ultra Brothers cleared the darkness from the Sun, Ryu told Mirai that humans could protect Earth, and Bai Ge opened a passage home and said goodbye.