Chapter Summaries

Mikoto used angelic biology to create Lanmoliwf, the Angel of Twilight, destabilizing the prison around Gae-Tia's Shadow. Meanwhile, Arisa Meigo was kidnapped, and the pursuit revealed that her presence in Academy City was crucial to preventing Endymion's ritual from failing catastrophically.

• Mikoto completed Lanmoliwf's genetic coding, and the Angel of Twilight emerged from Gae-Tia's Shadow as the prison began to collapse.
• Arisa Meigo lamented that she had only recreated Mikoto's melody before Saten Ruiko and Chunibyo Shirai joined her at a café.
• A waitress and two other girls kidnapped Arisa Meigo, and Shatiora pursued their car in her chariot after Saten Ruiko and Chunibyo Shirai escaped their restraints.
• Tsuchimikado Motoharu told Kamijou Touma that Arisa Meigo could not leave Academy City because stopping Endymion's ritual midway could cause a greater disaster.
• Kamijou Touma and Index began searching for Stiyl while Shatiora's chariot pursued the kidnappers, and the Witch Hunter King appeared and clashed with her.

Shatiora rescued Arisa Meigo while Kamisato Kashiwazaki and Stiyl revealed a plan to use a Saint as Endymion’s substitute core, accepting the risk of sacrificing part of Academy City. Kamijou Touma rejected the plan, and Mitsuya Aiyu warned that killing Arisa might trigger the real disaster.

• Shatiora pursued the kidnappers, destroyed their armored vehicle, and carried the unconscious Arisa Meigo to Kamisato Kashiwazaki.
• Kamisato hesitated when Arisa asked them to stop, but Shatiora escaped with Arisa as Kamisato and Touma confronted her.
• Kamisato explained that a Saint could replace Arisa as Endymion’s core, though the ritual might damage Endymion and the surrounding area.
• Stiyl called the sacrifice necessary, but Touma refused to accept that saving the world required abandoning someone.
• Mitsuya Aiyu arrived as Shokuhou Misaki’s representative and warned that killing Arisa might be part of a trap.

Arisa Meigo went to Endymion to sing as Retili Tanglode’s ritual proceeded, while Shokuhou Misaki warned Kamisato Kashiwazaki’s group that killing Arisa would trigger a dangerous merger through empathy. On June 6, Kamijou Touma and Index entered Endymion as students, with Touma planning to rely on Index to stop the ritual.

• Retili Tanglode welcomed Arisa Meigo to Endymion and told her that she only needed to sing.
• Shokuhou Misaki, controlling Mitsuya Aiyu, explained that killing Arisa could merge her with her other self and activate the power of miracles.
• Kamijou Touma confirmed that Arisa had once returned completely to Shatiora, and Shokuhou warned that adding a second Saint to the ritual could make it more dangerous.
• In space, Arisa sensed a spiritual connection with Mikoto and wondered whether the song arising in her mind belonged to her.
• On June 6, Kamijou Touma and Index entered Endymion with the concert audience, and Touma planned to depend on Index to deal with the ritual.

Mikoto continued refining her simulation while the others watched a blacked-out feed from the other side. At Endymion, Shatiora confronted Retili and shot her, but Retili survived; meanwhile, Touma and Index realized the ritual had begun.

• Mikoto began her thousandth simulation to immerse herself in the feelings of a past life and prepare a miracle.
• Short-haired Mikoto and Original Shokuhou argued over the black screen from the seventh-generation Otherworld Observation Device while Dolly tried to sense what was happening.
• Arisa Meigo performed beneath a starry stage as Retili prepared to activate the Magic Circle.
• Shatiora confronted Retili with photographs tracing her appearance across centuries, then shot her, but Retili survived and welcomed another chance to be killed.
• Kamijou Touma noticed the impossible starry sky, and Index recognized that the ritual had begun.

As Endymion transformed under Arisa Meigo’s guidance, Mikoto appeared and sang within the Tower of Babel, allowing everyone to understand one another. Mikoto asked Elisa whether she wanted to live as Lanmoliwf fought the shadows and Mikoto confronted the advancing machines and monster.

• Retili activated the Magic Circles and sent security robots against Kamijou Touma and Accelerator while black shadows attacked the concert.
• Arisa Meigo tried to complete Endymion’s disappearance, but Mikoto emerged and began singing in the ancient language of the Tower of Babel.
• Index explained that the tower allowed people to understand any language, and Mikoto asked Elisa whether she wanted to live.
• Lanmoliwf destroyed the black shadows while Mikoto faced the modified security robots and a machinery-and-magic monster.
• Aleister asked Aiwass whether Lanmoliwf was an angel.

Mikoto urged Arisa Meigo to choose life, and Arisa declared that she wanted to keep singing and see more of the world. As Arisa began to disappear, Mikoto called the miracle hers, while a Saint outside Endymion defended it from missiles.

• Aiwass and Aleister discussed Lanmoliwf’s nature and the song integrating humanity inside the tower.
• Mikoto told Arisa Meigo that she was a true Saint, and Arisa questioned why Mikoto had saved her.
• Mikoto asked Arisa whether she wanted to live, and Arisa cried out that she wanted to finish her song and experience more of the world.
• Arisa admitted that she was disappearing and that she could not control the miracle affecting her.
• A Saint outside Endymion intercepted the incoming missiles with steel wires and declared that no attack would get through.
• Mikoto told Arisa that she had the right to live and called the moment the miracle that descended for her.

Mikoto and Arisa’s song brought Arisa back to reality, while Accelerator used Index’s score to disrupt Retili’s ritual. Mikoto’s song was interrupted by the Titan of Azure Flame, and Arisa saw fragments of Mikoto’s possible lives before a Hyper-ranker attacked the Titan.

• Mikoto joined Arisa in singing, and Arisa began to perceive the world as real again.
• Retili reversed the Tower of Heaven and activated Burning Style Gae-Tia to burn herself and the world to ash.
• Accelerator spread Index’s simple score with his vector ability, disrupting Retili’s ritual and buying time.
• The Titan of Azure Flame struck Mikoto, stopping her song, as Arisa saw fragments of many different lives Mikoto might have lived.
• A Hyper-ranker seized Burning Style’s arm, and lightning tore the azure-flame arm apart.

Arisa Meigo and Shatiora resonated across worlds as Arisa tried to stop Mikoto from sacrificing herself to become the force that would save their unstable world. They joined hands with Mikoto as the story left her choice unresolved.

• Mikoto fought the Titan of Azure Flame while Arisa realized the song was a ritual that might save Endymion at a cost.
• Shokuhou Misaki confronted Aleister, who explained that the world remained unstable and needed a Prime Mover to give it life.
• Retili prepared to use the Burning Style spell in Endymion, intending to burn everything and meet her own destruction.
• Shatiora began hearing Arisa's song and shared memories and feelings with the Arisa Meigo of another world.
• Arisa and Shatiora asked Mikoto to stop and reached for her hands as she tried to lower them.

Arisa Meigo and Mikoto restored hope for the future, turning Endymion from hell into heaven and cutting Retili off from the living world. Retili’s wish to die was fulfilled, but her consciousness remained trapped as a powerless ghost, still burning with world-destroying flames that could no longer harm anyone.

• Arisa Meigo sang about her dreams of growing up and traveling the world, while she told Mikoto she wanted them to see the future together.
• Shatiora defeated the two automata and explained that people’s hopes for a better future had transformed Endymion into heaven.
• Kamijou Touma shattered the Magic Circle, Kamisato Kashiwazaki blocked the outside attacks, and Accelerator destroyed the shadows as Retili’s connection to Endymion was severed.
• Retili covered the sky with Magic Circles and unleashed the Burning Style to destroy the world, but the Hyper-ranker ignored her attacks.
• A Misaka Sister told Retili that she was already dead and could no longer interfere with the living world.
• Retili collapsed as a powerless ghost while her pale flames spread across Earth without affecting it.

After the concert’s apparent resolution, the story followed the characters as they considered the other world and the strange connection between the two Mikotos. The chapter left Dolly’s identity uncertain while Index and Touma continued working on Endymion’s magic circles in space.

• Shatiora asked what would happen to her other self, and Mikoto said it depended on her.
• Nunotaba Shinobu pushed Accelerator onto the stage in a Performance Outfit, prompting the audience to cheer.
• Short-haired Mikoto reflected on seeing the other Mikoto’s memories and wondered whether she could become like her.
• Original Shokuhou blushed over the long-haired Mikoto, then left to investigate while Dolly and Short-haired Mikoto remained together.
• Short-haired Mikoto asked Dolly why she called her Onee-sama but referred to the other Mikoto as “the other me,” and the stage cut away before Dolly answered.
• Index guided Kamijou Touma as he removed magic circles from Endymion, explaining that the structure could become something like Heaven.

Mikoto explained how the Dominion Theater had let her experience countless lives, then encouraged Arisa Meigo to value her own future. Shokuhou met Professor Kiyama Harumi, and after a day of rest Mikoto met Arisa at a café, where Arisa hesitated to say something.

• Mikoto had experienced countless lives through the Dominion Theater, using the cores of her twenty thousand Imoutos to stage new lives when needed.
• Arisa Meigo asked to learn more about Mikoto and return the miracle she had brought her, but Mikoto told her that living each day was itself a miracle.
• Shokuhou Misaki personally met Professor Kiyama Harumi to ask her questions, though the stage skipped what they discussed.
• The next morning, Shokuhou left Mikoto a note saying she had arranged leave, while Shirai Kuroko reminded Shokuhou of their agreement not to alter her mind or memories.
• Mikoto received a message from Arisa, changed into casual clothes, and went to meet her at a café, where Arisa said she was writing a song and then hesitated to speak.

Mikoto and Arisa Meigo were confronted in a café by Front Gust, who targeted Mikoto as a blasphemer. Mikoto and Lanmoliwf repelled her, and Front Gust blamed a Misaka Sister for suppressing her as the Sister revealed herself.

• Arisa Meigo tried to ask Mikoto about the memories and lives she had seen, but Mikoto stopped her as someone approached the café.
• Front Gust appeared and attacked Mikoto, but lightning shattered her compressed-air strikes.
• Mikoto identified how Front Gust’s attacks followed the cross on her tongue, while Front Gust threatened to kill everyone nearby to provoke hostility.
• Front Gust’s Heaven’s Punishment Sorcery caused hostile onlookers to faint, and she began coughing blood under magical pressure.
• Front Gust charged Mikoto with her hammer, but Lanmoliwf intercepted her and blasted her through several streets before the damage was repaired.
• Front Gust blamed an Esper for suppressing her, but a Misaka Sister stepped forward and said it was not her power.

Mikoto confronted Front Gust, exposed the pain behind her hatred of science, and used her power and words to break her down. Rear Water rescued Front Gust and left Academy City, while Shokuhou Misaki followed Kiyama Harumi underground.

• Mikoto warned Front Gust that attacking Arisa Meigo would bring divine punishment, but Front Gust refused to retreat.
• Mikoto revealed that Front Gust’s younger brother had died after an amusement park accident and that she had survived because he asked the hospital to save her.
• Lanmoliwf repeatedly threw Front Gust across the highway while Mikoto challenged her hatred of science and the guilt beneath it.
• Mikoto immobilized Front Gust’s weapons and continued burdening her with the sins of those she had killed, pushing her close to collapse.
• Rear Water arrived, identified himself as a fellow member of God’s Right Seat, and carried Front Gust out of Academy City.
• Shokuhou Misaki followed Kiyama Harumi into an elevator and descended to the lower levels.

Kiyama Harumi led Shokuhou Misaki through Academy City's hidden underground facility, called Dogma, and brought her to a sterile chamber. As the chamber opened, the story also left Mikoto questioning whether the other Misaka she had seen was actually Dolly.

• Kiyama Harumi explained that Academy City's underground contained unmapped levels and led Shokuhou Misaki toward the place outsiders called the Black Vault, which she named Dogma.
• Kiyama Harumi had Shokuhou Misaki bathe and change into a surgical gown before guiding her deeper through the robot-maintained facility.
• Short-haired Mikoto realized that the long-haired girl might have been Dolly and wondered whether the Misaka she had met before was also Dolly.
• Kiyama Harumi brought Shokuhou Misaki to a sterile room, explaining that her ability would not work there and that the Chairman of the Board had approved her visit.
• Kiyama Harumi said she could not ignore what lay inside, and the door opened onto a place resembling a pool.

Shokuhou discovered that Mikoto’s original body was being kept alive by machines while her consciousness operated through the Misaka Network. Mikoto explained that she planned to sacrifice herself to ensure the newborn world could survive, and Shokuhou stayed with her before they had to part.

• Shokuhou found Mikoto’s long-haired original body in a life-support tank, and Kiyama Harumi explained that machines sustained it while the Misaka Network supported her thoughts.
• Mikoto asked to speak with Shokuhou and confirmed that her consciousness had always been her own, despite her failing body.
• Mikoto said she intended to hand authority to Elisa and become the force that let the world continue, but Shokuhou protested that a world without Mikoto had no meaning.
• Shokuhou asked whether the Mikoto who had been beside her was truly Mikoto rather than Imouto, and Mikoto confirmed that it was her.
• Kiyama Harumi ended their meeting because Shokuhou’s isolation measures were weakening and Mikoto’s body was vulnerable, so Mikoto was returned to the tank.
• Kiyama Harumi told Shokuhou that Mikoto had brought advanced technology to the facility, and Shokuhou said Mikoto would understand that they had acted to protect her.

Mikoto and Shokuhou discussed Mikoto’s determination to save the world before Mikoto learned that an attack was underway. Fire Right Seat gathered the Magic Side’s support to invade Academy City, where he confronted Kamijou Touma and tested the power of Imagine Breaker.

• Mikoto told Shokuhou that the first clone, Dolly, had always shared her consciousness, and said she wanted to save the world Shokuhou lived in.
• Mikoto received news of an attack that was likely meant to coincide with God's Right Seat’s assault.
• A girl near Academy City briefly set her hand on fire, then withdrew it and left.
• Fire Right Seat explained that the Tower of Babel, Pale Flame’s threat to the world, and reports of an artificial angel had rallied the Magic Side behind an invasion.
• Fire Right Seat confronted Kamijou Touma, who shielded Index and blocked a strike from the third hand emerging behind Fire Right Seat.

Fire Right Seat attacked Kamijou Touma, hoping to use Imagine Breaker, while Touma tried to protect Index. After Arisa Meigo stopped his enormous light sword, Accelerator arrived as reinforcements.

• Fire Right Seat repeatedly attacked Kamijou Touma, but Imagine Breaker blocked his strikes.
• Fire Right Seat wounded Mugino Shizuri when she attacked him, leaving ITEM to call off their mission and seek medical help.
• Arisa Meigo cut off Fire Right Seat's enormous sword of light before it could strike.
• Fire Right Seat asked who Academy City's strongest was, and Kamijou Touma mentioned The First One and the chairman.
• Accelerator appeared behind Touma, giving him relief as reinforcements arrived.

Leisha and the blonde magician observed Academy City and confirmed that Endymion was alive, while Accelerator and Kamijou Touma confronted Fire Right Seat. Accelerator reflected his attack and drew his attention, but Fire Right Seat then launched another Light Mass at her.

• The Misaka Sisters overwhelmed Left Seat while Leisha and the blonde magician watched from elsewhere.
• Leisha determined that Endymion was alive and connected to Yggdrasil, while the blonde magician told her to focus on their target.
• Kamijou Touma and Accelerator faced Fire Right Seat as Index warned that he intended to use Academy City to save the world.
• Fire Right Seat amplified his attack when facing Accelerator, but she redirected the energy back at him and made him take her seriously.
• Fire Right Seat recognized Accelerator as Academy City's second-ranked Esper and fired a Light Mass at her.

Kamijou Touma and Accelerator worked together to defeat Fire Right Seat, only to discover that Index had been replaced. The story then shifted to the Anglican Church, where Laura Stuart revealed that a device connected to Index’s Automatic Recording had been stolen.

• Kamijou Touma recognized the limits of Fire Right Seat’s unstable Holy Right, while Accelerator struggled to analyze his magic.
• Accelerator and Touma coordinated their attacks, and Touma grabbed Fire Right Seat’s wrist with Imagine Breaker before Accelerator sent him crashing through a water tower.
• Mikoto pointed out that Index was still standing apart, and Touma discovered that she was a glass decoy who vanished when he touched her.
• Stiyl learned from Laura Stuart that a device kept in Buckingham Palace had been stolen.
• Laura Stuart explained that the stolen device was already unusable because its Automatic Recording had been infiltrated and its control spiritual equipment damaged.

Stiyl and Laura discussed Academy City’s invasion by God’s Right Seat and the city’s powerful chairman, while Fire Right Seat used a damaged spiritual item to begin an assault on Academy City. Saten Ruiko and the others awoke to an illuminated night sky and a vast city summoned beyond Academy City, leaving Leisha shocked by the Roman Orthodox Church’s actions.

• Stiyl worried about Index, and Laura explained that Academy City’s chairman and the First One’s Uncharted Territory could thwart powerful invaders.
• Fire Right Seat told Rear Water that Academy City had to be destroyed to correct the world’s supposed mistakes, then used a damaged scroll to manipulate Index’s power.
• Saten Ruiko and her classmates woke after losing consciousness and saw the night sky shining as brightly as day.
• Saten Ruiko used her phone’s camera to spot an ancient-looking city floating beyond Academy City.
• A massive Magic Circle descended over the outside world, and Fire Right Seat summoned Gabriel, Misha Klyuchev.
• Leisha objected that the Roman Orthodox Church’s actions were not part of the agreement.