Chapter Summaries

Ancient One’s introduction of Ling Donglai’s free Electromagnetic Force attracted new followers, while Elaina made the Chat Group more active by sharing stories from her travels. Natsuki Subaru joined the group and begged to leave after learning that Ling Donglai could draw in and devour his world, but Ling Donglai warned him that despair was coming.

• Ancient One told Sanctum spellcasters that Ling Donglai offered magic without a price, and many signed up before discovering that Electromagnetic Force was slow to become useful.
• Elaina tested the Chat Group’s features and shared travel stories, prompting the group to select Natsuki Subaru as its second unlucky member.
• Natsuki Subaru learned that joining exposed his world’s coordinates to Ling Donglai and pleaded to leave the group.
• Ling Donglai checked Natsuki Subaru’s memories, noted that he had reached the Royal Selection arc, and warned him that his first despair would soon arrive.
• Elaina questioned whether Natsuki Subaru should believe the group’s claims, but Ling Donglai insisted that Subaru would eventually beg him for power.

Elaina and Natsuki Subaru discovered that the Chat Group connected them across worlds, while Shinobu Kocho reflected on the higher-dimensional threat and the experiment involving the End of Reincarnation contract. Elaina learned more about Subaru’s death-triggered time resets, and Subaru used the conversation to begin venting about the burden of keeping his secret.

• Elaina gained the ability to manipulate electric currents and magnetic fields, then asked Natsuki Subaru what his world was like.
• Elaina and Natsuki Subaru compared their worlds, and Elaina learned that Satella had devoured half of Subaru’s world.
• Shinobu Kocho considered how lower-dimensional worlds had no choice against higher-dimensional forces and recalled the contract called End of Reincarnation.
• Elaina asked whether Subaru’s time resets caused temporal conflicts, and he described the witch’s scent and the black hand that followed him.
• Subaru privately hoped the Chat Group would let him reveal his Return by Death secret and ease the strain of repeatedly dying to save others.

After Rem was swallowed by the White Whale and erased from everyone’s memories, Natsuki Subaru accepted Ling Donglai’s contract to save her, gaining immense psychic energy and knowledge in exchange for a reckoning fifty years later. He discovered his new powers and resolved to save Rem and the world as the purple ring appeared above his world.

• Ling Donglai watched Sakura train with Nymph and told Sakura to begin fighting Nymph with her transformation device and the resolve to kill.
• Ling Donglai accelerated time in Natsuki Subaru’s world, where the White Whale swallowed Rem and erased her from everyone’s memories except Natsuki Subaru.
• Natsuki Subaru told the Chat Group that Return by Death could not save Rem, and Ling Donglai offered him a contract promising fifty years before settling accounts.
• Natsuki Subaru signed the End of Reincarnation Contract, and a purple band appeared above his world as the contract granted him immense psychic energy and knowledge.
• Natsuki Subaru discovered his new power, accidentally disintegrated a wall with a purple beam, and promised to save Rem and the world.

Natsuki Subaru’s new power let him copy magic and read Roswaal’s memories, revealing that Roswaal had manipulated his life after he arrived in the world. As Subaru’s rage made his powers spiral out of control, he confronted Roswaal and declared that he knew everything.

• Natsuki Subaru’s violet beams copied Roswaal’s defensive spell, while Emilia and Ram tried and failed to stop him.
• Subaru read Roswaal’s memories and learned that Roswaal had known about his return by death and manipulated events in his life.
• Puck unleashed a blizzard to intervene as Subaru’s attacks damaged the mansion and carved a passage through the forest.
• Subaru learned Magnetic Field Rotation, expanded his force field around everyone, and demanded to know what Roswaal was trying to do.
• Subaru told Roswaal that he knew everything as lightning surrounded him.

Natsuki Subaru confronted Roswaal over his schemes, destroyed the Gospel, and forced him into an alliance by promising to seek a way to revive Echidna. Roswaal revealed his centuries-long plan, while Emilia accepted his apology and Puck went to rest.

• Natsuki Subaru took the Book of Wisdom from the ruined castle and burned Roswaal’s Gospel after accusing Roswaal of manipulating events and sacrificing Rem.
• Natsuki Subaru effortlessly nullified Roswaal’s magic and chose not to kill him, instead demanding that Roswaal serve him and help pursue Echidna’s resurrection.
• Roswaal agreed to negotiate and revealed that he had survived for four centuries by possessing his descendants’ bodies.
• Roswaal explained that he had engineered hardships to make Natsuki Subaru into an obsessive accomplice who would help Emilia win the royal selection.
• Puck went to rest, and Emilia condemned Roswaal’s secret actions but was willing to forgive him if he apologized.

Natsuki Subaru told Roswaal and Emilia about his fifty-year agreement with Demon God and asked for their help preparing Emilia to become king. He restored the ruined castle and found Betty, offering to help her leave her long years of waiting even though he was not the person she had awaited.

• Natsuki Subaru discovered Demon God had compressed fifty years into seconds on a timer and resolved to rely less on his borrowed psychic power.
• Natsuki Subaru explained the agreement to Emilia and Roswaal, asked Roswaal for help, and said they would leave for the Sanctuary the next day.
• Natsuki Subaru used his magic eyes and psychic power to reassemble the ruined castle.
• Natsuki Subaru found Betty in the Forbidden Library and told her he knew about her long wait and wanted her to be happy.
• Betty asked whether Natsuki Subaru was the person she had waited for, and he said no before taking her hand as her magic wind battered him.

Natsuki Subaru forced Beatrice to leave the Forbidden Library, promising to lead her toward happiness, then traveled with the others to Sanctuary. There, he entered Echidna’s trial and met the Witch of Greed, who asked how he had escaped the Book of Wisdom’s control, and Subaru proposed they discuss the Demon God.

• Natsuki Subaru endured Beatrice’s magic and led her out of the Forbidden Library, promising to make her happy and freeing her once she could defeat him.
• Beatrice accepted Subaru’s hand and stepped outside, where Roswaal welcomed them both.
• The group traveled to Sanctuary, where Subaru headed to the trial grounds while Roswaal’s plan to divide Subaru from the mansion loomed in the background.
• Subaru used his Magic Eye against the trial grounds’ barrier, then lowered his defenses and entered the trial.
• Subaru met Echidna in the trial, and she asked why she could no longer read his future and how he had escaped the Book of Wisdom’s control.
• Subaru suggested that they discuss the Demon God.

Natsuki Subaru told Echidna that a Demon God threatened to devour the world and sought her help with resurrection and Emilia’s trial. Echidna revealed that her resurrection ritual would activate when Emilia opened the Sanctuary’s seal, then expelled Subaru after his declaration of love for Emilia.

• Natsuki Subaru asked Echidna whether she could still see the future, and she said she could not.
• Subaru refused to drink Echidna’s tea and asked about her resurrection plans, then explained the Demon God’s threat and his fifty-year deadline.
• Echidna warned that resurrection methods carried immense costs and disclosed that her ritual would activate when Emilia opened the Sanctuary’s seal.
• Echidna explained that Emilia’s trial required her to face her painful past and undo the ritual sealing her memories.
• Subaru said he believed Emilia could pass the trial and would give her courage because he loved her, prompting a jealous Echidna to kick him out of the group chat.

Ling Donglai watched Natsuki Subaru’s progress in the Sanctuary, then returned to his own world and developed an idea for using Poincaré recurrence to grow stronger. Natsuki Subaru’s group went on to clear the Sanctuary and the Sage’s Tower, and Emilia became king.

• Natsuki Subaru left the witches’ courtyard with the secret of the trial and planned to help Emilia face her past.
• Ling Donglai returned his attention to his world, where Sakura served him a meal she had cooked.
• Ling Donglai considered Poincaré recurrence and realized it might let him continuously grow stronger.
• Natsuki Subaru and his companions cleared the Sanctuary in four days, then traveled to Pristella to find Dona Fox.
• Natsuki Subaru’s group cleared the Sage’s Tower with almost no injuries, and Emilia became king.

Natsuki Subaru learned how the Witch Cult and its leaders had shaped the world, then spent decades resolving the witches’ affairs, conquering the world, and expanding into space. In the final decade before the reckoning, the people of his universe returned toward their home planet to investigate the purple ring above it.

• Echidna told Natsuki Subaru how Pandora seized the Witch Cult, drove Satella mad, and gathered the Witch Factors while Echidna prepared a counterattack.
• Natsuki Subaru dismissed the witches’ conflict as boring and spent ten years settling their affairs, gaining Reinhard’s support, and leading Emilia’s kingdom to conquer the world.
• During the second decade, Natsuki Subaru settled the system, married Emilia and the restored Rem, and began pulling the universe toward an unknown destination as the witches climbed the magic tree.
• During the third decade, Natsuki Subaru feared his growing power, accidentally destroyed a planet, and agreed to sit on a throne as a human battery while his thoughts roamed the Four Blues.
• During the fourth decade, magic warships spread through the universe and Natsuki Subaru became known as the Cosmic Emperor.
• In the final decade, the people of the Re:Zero universe turned back toward their home planet and began researching the purple ring above it.

Ling Donglai destroyed Natsuki Subaru’s universe after the fifty-year contract ended, then devoured it and restored Subaru’s soul. After studying Poincaré recurrence, Ling Donglai tested his new Miracle spell and discovered that it could cause irreversible destruction at a cost to his universe.

• The Arcane Civilization created a galaxy-destroying Black Hole weapon and established the Avalon Project as a safeguard against the Demon God.
• Ling Donglai detonated the ring, which had gathered the psychic power of the Arcane Civilization for fifty years, and its explosion consumed the Re:Zero Universe.
• Natsuki Subaru awoke in the Chat Group as a soul, learned that he had lost the game, and was told the Demon God would grant him a second life in the Underworld.
• Ling Donglai repeatedly rebooted and devoured the Re:Zero Universe, restored Subaru’s old soul, and deepened his understanding of Poincaré recurrence.
• Shinobu Kocho explained that losing to the ring meant revival in the Martial God Universe, while defeating it would lead to an interstellar war without resurrection.
• Ling Donglai used Miracle to erase a table irreversibly and discovered that the spell consumed a small amount of dark matter from his universe.

Ling Donglai investigated the Marvel Universe’s dark matter and the Heavenly Court’s stalled population growth before opening the Martial God Universe to the Marvel Universe. The opening cost his universe thirty percent of its dark matter, while detectors across countless civilizations began observing the M87 Nebula Belt.

• Ling Donglai discovered that dark matter could annihilate beings and force them into the Martial God Universe, then questioned why Marvel held less dark matter than his universe.
• Ling Donglai asked Vivi about the Heavenly Court’s stagnant population, and she explained that immortal couples rarely had children because they could create life through science and no longer valued descendants.
• Ling Donglai decided that hiding from Marvel’s absorption was futile and opened the Martial God Universe to contact with the Marvel Universe.
• Dark matter poured through the opening, draining thirty percent of the Martial God Universe’s supply without attracting nearby observer civilizations.
• Detectors across countless civilizations alarmed as they broke through magnetic interference and began observing the M87 Nebula Belt.

The Heavenly Court secured the M87 Nebula belt with overwhelming force as other cosmic powers assessed its strength, while dimensional Demon Gods turned their attention toward Ling Donglai’s populous Martial God Dimension. Ling Donglai then took Sakura and Nymph to the final stage of the Holy Grail War to retrieve something from the Grail.

• The Heavenly Court destroyed an invading fleet with a Giant God Machine, establishing control over the M87 Nebula belt and deterring other factions.
• Dimensional Demon Gods sent pieces into the Martial God Dimension to try to claim some of its faith, but Ling Donglai cleared them away.
• Ancient One recognized that the Heavenly Court’s presence in the Martial God Dimension could complicate Earth’s relations with powerful divine factions.
• Ling Donglai told Sakura that her father was likely dead and took her along to see the magi’s war.
• Nymph prepared an invisibility field, and Ling Donglai, Sakura, and Nymph headed toward the Holy Grail War’s strongest energy fluctuations.

At the Holy Grail’s descent site, Mephisto and Ghost Rider revealed themselves as the hidden pair, and the arriving factions converged for the final battle. Ling Donglai exposed his power by killing Gilgamesh, then joined Kiritsugu and Artoria against Mephisto as Ghost Rider moved to fight.

• Mephisto explained how he had hidden himself and planned to kill the faith demon Mephisto to inherit its power and become Satan.
• Gilgamesh and his priest arrived, followed by Kiritsugu Emiya and Artoria; Ling Donglai’s hidden presence was exposed.
• Ling Donglai destroyed Gilgamesh with a Matter Fission Ray, sending his soul into the Holy Grail.
• Ling Donglai told Kiritsugu he had no Command Seals and offered to help fight Mephisto, then retreated to recover.
• Kiritsugu ordered Artoria to fight Ghost Rider, while Mephisto moved to the rear and Ghost Rider advanced.

Mephisto and Ghost Rider fought Saber and Kiritsugu Emiya until Archer’s attack interrupted them, while Ling Donglai analyzed the forming Holy Grail. When Saber reached for the corrupted Grail, Ling Donglai made its malice blacken her armor and sword, leaving her transformed as Blackened Saber.

• Ghost Rider bound Saber with Hellfire and used the Penance Stare to force her to confront her regrets, while Kiritsugu Emiya remained determined to win.
• Archer fired Caladbolg II through Mount Enzou, interrupting Ghost Rider and drawing Mephisto away from the battle.
• Saber used Excalibur against Ghost Rider, while Mephisto faced Archer and the Holy Grail continued forming beside Ling Donglai.
• Ling Donglai analyzed the Grail’s black mud and named his body project the Holy Origin Demon Fetus as Saber charged him to claim the Grail.
• Ling Donglai placed the corrupted Grail in Saber’s hands, and its malice transformed her into Blackened Saber, severing Kiritsugu Emiya’s Command Spell connection to her.

Ling Donglai watched Black Saber fight the Ghost Rider while holding the corrupted Holy Grail, and Mephisto returned after defeating the Counter Force assassin. Mephisto coveted the Grail’s black mud and resolved to prepare for another attempt to destroy the planet.

• Black Saber attacked Ling Donglai, who dodged and reappeared with the Holy Grail while praising her, making Sakura jealous.
• Black Saber ignored the Ghost Rider’s Penance Stare and repeatedly blasted him, while he recognized Ling Donglai’s immense crimes and tried to judge him.
• Mephisto defeated the Counter Force assassin, though Unlimited Blade Works left him disheveled, and the Counter Force recalled its killer.
• Mephisto returned to Ling Donglai’s battlefield, coveted the black-mud Holy Grail, and decided he would try to destroy the planet once he was fully prepared.

Mephisto spent a Command Spell to strengthen the Ghost Rider, but Ling Donglai gained the power of Angra Mainyu and defeated him. Before dying, Mephisto used two Command Spells to send the Ghost Rider into the Great Holy Grail and secure a place in the Throne of Heroes.

• Mephisto used a Command Spell to empower the Ghost Rider, who resisted Artoria's attack, but Artoria broke his leg and stabbed him with Excalibur.
• Mephisto tried to seize the Holy Grail from Ling Donglai, but Ling Donglai struck him and drank the black mud inside the Grail.
• Angra Mainyu appeared as Irisviel and gave Ling Donglai Irisviel's soul and memories in exchange for his promise to free it after the storyline.
• Ling Donglai took Angra Mainyu's power and blasted through Mephisto's chest with a 100,000-horsepower Magnetic Field Rotation punch.
• As Mephisto faced defeat, he used two Command Spells to send the Ghost Rider into the Great Holy Grail and order him to take root in the Throne of Heroes.

Ling Donglai overwhelmed Mephisto by attacking Hell with a vast cosmic army, then sent the Ghost Rider to the Throne of Heroes for corruption. He took control of corrupted Artoria and the Einzbern Family, ending the Fourth Holy Grail War without making a wish.

• Ling Donglai used a cosmic fleet and robot army to blockade and bombard Hell, leaving Mephisto unable to overcome the assault.
• Mephisto appealed to the other Dimensional Demon Gods for help, but they ignored him while studying the M87 Nebula's tactics.
• Mephisto declared defeat, and Ling Donglai sent the Ghost Rider to the Throne of Heroes to undergo corruption.
• Ling Donglai offered Kiritsugu Emiya Irisviel's body and the Third Magic in exchange for everyone acknowledging him as their master, and Kiritsugu accepted.
• Ling Donglai verified the Third Magic for the Einzbern Family, which shut down after fulfilling its mission and came under his control, giving him its wealth.

Ling Donglai brought Sakura to reunite with her injured mother, Aoi Tohsaka, and Nymph restored Aoi’s bodily functions but could not recover her memories. He offered Aoi a home, and Rin joined them as Sakura began learning boxing.

• Ling Donglai asked Sakura if she wanted to meet her birth mother, and Sakura led him to the Tohsaka estate.
• Sakura found Aoi Tohsaka in the church, where she remained mentally impaired and paralyzed from her injuries.
• Nymph used radio waves and electric stimulation to restore Aoi’s normal bodily functions, but explained that her memories could not be recovered without a backup of her soul.
• Sakura told Aoi who she was, and Aoi accepted Ling Donglai’s offer to live with them.
• Ling Donglai arranged for Rin to join Sakura and Aoi, gave Rin Tokiomi Tohsaka’s magecraft inheritance, and watched the sisters begin learning boxing.

Sakura and Rin practiced together and discussed how Ling Donglai had saved Sakura, while Aoi settled into life with her daughters at his home. At dinner, Rin realized Ling Donglai might be interested in her mother and tried to intervene, but Sakura questioned whether she could safely give Aoi an electric-current massage.

• Saber Alter stayed in the family courtyard as Ling Donglai's gatekeeper, relying on him for magical energy and enjoying the era's fried chicken and burgers.
• Rin asked Sakura how she had met Ling Donglai, and Sakura said he had saved her and Aoi while hinting at her resentment over how Tokiomi had treated the sisters differently.
• Aoi called her daughters to dinner and worried that she could not manage the Clock Tower magi or protect Sakura and Rin on her own.
• Aoi toasted Ling Donglai for taking them in, and he offered to give her an electric-current massage if she felt unwell.
• Rin suspected Ling Donglai had his eyes on Aoi and volunteered to massage her, but Sakura doubted Rin could do it without electrocution.