Chapter Summaries

Medea revealed that she had enhanced the Sphinx and offered Saber a chance to join her side. Saber turned on Yoru Machi after learning he had deceived her, and Lancelot intervened to protect her, revealing his identity as Sir Lancelot.

• Medea explained that her Innate Skill, Circe's Teachings, had enhanced the Sphinx enough to overpower Saber.
• Medea told Saber that Yoru Machi was the Caster fighting the other kings and offered to help fulfill her wish if she joined them.
• Saber angrily demanded an explanation from Yoru Machi and prepared to attack him, so Medea ordered Anubis and the Sphinx to stop her.
• Lancelot blocked Anubis's attack to protect Saber, and Medea accused him of betraying his loyalty to Sakura.
• Lancelot said he served Sakura rather than Medea and would protect her if Saber threatened her.
• Saber recognized Lancelot as the Knight of the Lake, and he revealed his face and greeted her as his king.

Lancelot revealed himself to Artoria and fought Medea’s Phantasmal Beasts while Sakura avoided Medea’s attempt to control him. At the other battlefield, Yoru Machi faced the King of Conquest, Gilgamesh, and Diarmuid, then vanished after unleashing Limit Shunko.

• Artoria recognized Berserker as Lancelot, who explained that he intended to fight her after eliminating the other Heroic Spirits and atone by dying beneath her sword.
• Lancelot unleashed Unbreakable Lake Light and overpowered Anubis, while Medea tried to use Sakura’s Command Spell to stop him.
• Sakura stayed out of Medea’s reach, leaving Medea to fight Artoria and Lancelot alongside the Sphinx and Anubis.
• Yoru Machi fought the King of Conquest, Gilgamesh, and Diarmuid, while Gilgamesh secretly recovered using medicine from the Gate of Babylon.
• Yoru Machi endured the King of Conquest’s anti-army Noble Phantasm, powered up with Triple Kaio-ken and Limit Shunko, and disappeared from the battlefield.

Yoru Machi defeated King of Conquest’s chariot Noble Phantasm and then fought Diarmuid at close range. After Yoru Machi shattered Diarmuid’s twin spears, Diarmuid was forced to withdraw.

• Yoru Machi charged into King of Conquest’s Noble Phantasm, and their clash destroyed the chariot, sword, and Thunderhoof Steeds.
• Yoru Machi emerged badly injured but quickly regenerated, while King of Conquest had suffered a decisive loss.
• Diarmuid attacked Yoru Machi with both Noble Phantasms, but the Blood-Red Rose of Purification could not dispel Yoru Machi’s crimson aura.
• Yoru Machi and Diarmuid fought through several hundred exchanges until Yoru Machi’s Getsuga Tensho shattered Diarmuid’s twin spears.
• Diarmuid withdrew from the battle.

After Diarmuid died, Iskandar revealed his Noble Phantasm, Army of the King, and drew Yoru Machi into a desert battlefield. Yoru Machi unleashed his overwhelming magical power as Iskandar led his army in a charge against him.

• Yoru Machi told the mortally wounded Diarmuid that he would repeat his past failure and die by his own hand, and Diarmuid accepted his fate before dissolving into golden motes.
• Iskandar asked Yoru Machi about his final trump card, and Yoru Machi identified it as Army of the King, a Reality Marble that summoned tens of thousands of his former subordinates as Heroic Spirits.
• Iskandar activated Army of the King and trapped everyone at the Tohsaka residence within its vast desert battlefield.
• Yoru Machi asked whether Iskandar wanted to know the outcome of the Holy Grail War, but Iskandar said he would forge his own future with his army.
• Yoru Machi refused Medea's offer to summon Dragon Tooth Soldiers and released a surge of magical power that stirred a storm across the desert.
• Iskandar shielded Waver and led his army in a charge against Yoru Machi.

Yoru Machi challenged Iskandar’s army alone and vowed to fight using only his physical strength and martial skill. After enduring arrow volleys, he charged the shield formation and split it apart with his Yagami Style Fourth Form.

• Yoru Machi charged Iskandar’s Heroic Spirit army and cut down its front-line soldiers with his twin blades.
• Yoru Machi deflected most of the army’s arrows with his blades but took several arrows in his arms and thighs.
• Iskandar halted his army and questioned Yoru Machi, who declared he would defeat the army without using magecraft or other powers.
• Saber and Lancelot admired Yoru Machi’s martial valor, while Medea worried about his safety and prepared to intervene if needed.
• Yoru Machi charged Iskandar’s two-layer shield formation and split it apart with his Yagami Style Fourth Form—Army Breaker.

Yoru Machi tore through the King of Conquest’s army and defeated Iskandar in their final clash, promising to spare Waver. After eliminating Lancer and Rider, he turned to the weakened Gilgamesh and challenged him to unleash Enuma Elish.

• Yoru Machi slaughtered the Heroic Spirit soldiers, astonishing Iskandar with his martial skill and physical strength alone.
• A general ordered the soldiers to use catapults against Yoru Machi, but he smashed the incoming boulders and their fragments killed many of the surrounding troops.
• As the King of Conquest’s army dwindled, Iskandar charged Yoru Machi and challenged him to one last fight.
• Yoru Machi revealed his name as Yagami Yoru Castle and defeated Iskandar, who asked him to spare Waver; Yoru Machi agreed.
• After defeating Lancer Diarmuid and Rider Iskandar, Yoru Machi challenged the weakened Gilgamesh to use Enuma Elish.

Gilgamesh prepared to use Ea against Yoru Machi, but Tokiomi Tohsaka summoned him away before he could attack. Back at the ruined Tohsaka residence, Yoru Machi restrained Saber, leaving her vulnerable to Medea.

• Gilgamesh overcame his fear of Yoru Machi and drew Ea, determined to accept the challenge.
• As Gilgamesh charged Ea, Tokiomi Tohsaka and Kirei Kotomine escaped to the Holy Church, where Tokiomi used a Command Seal to summon Gilgamesh away.
• Tokiomi thanked Kirei for helping them escape, while Gilgamesh became furious that Tokiomi had interrupted his chance to kill Yoru Machi.
• The battle's aftermath left Lancer, Rider, and Assassin eliminated, while Kaineth died, Waver was spared, and Tokiomi, Kirei, and Kiritsugu Emiya were missing.
• Yoru Machi used Chain Binding to restrain Saber as she fought Medea, and Medea approached with Rule Breaker.

Kiritsugu Emiya discovered that his connection to Saber was disappearing after Medea severed her bond with him. At the Tohsaka residence, Yoru Machi arranged a final duel between Saber and Lancelot, which ended with Saber killing the knight as he sought atonement.

• Kiritsugu Emiya used a Command Seal to summon Saber but found she did not appear and their connection was fading.
• Lancelot pleaded with Yoru Machi to spare Saber, but Saber rejected his pity and insisted she had chosen to fight in the Holy Grail War herself.
• Yoru Machi proposed that Saber and Lancelot settle matters in a duel, with the victor allowed to remain.
• Lancelot provoked Saber into fighting by invoking their past and their opposing positions in the war.
• Saber understood that Lancelot wanted to die for his sins, then pierced his chest with Excalibur and caught him as he fell.

After Lancelot vanished, Yoru Machi’s group returned to the Matou residence and found Irisviel near death because the Lesser Grail inside her had absorbed the souls of four defeated Heroic Spirits. Yoru Machi began transferring her into a prepared body, and Medea severed her connection to the Lesser Grail.

• Saber mourned Lancelot’s disappearance while Yoru Machi’s group left the Tohsaka residence, with Sakura following and taking his hand.
• The group returned to the Matou residence and found Irisviel unconscious, prompting Saber to accuse them of mistreating her.
• Yoru Machi realized that the souls of four defeated Heroic Spirits had overwhelmed the Lesser Grail inside Irisviel and ordered her taken to the underground laboratory.
• Saber carried Irisviel to the laboratory, where Yoru Machi prepared a cloned body and explained that they needed to extract the Lesser Grail to save her.
• Medea used her Noble Phantasm to sever Irisviel’s connection to the Lesser Grail.

Yoru Machi used magic to remove Irisviel's soul from the Lesser Grail and place it in a new body, freeing her from her fate as the Grail. After Irisviel woke, she reunited with Saber and learned that Medea had been forcing Saber into humiliating costumes.

• Yoru Machi successfully transferred Irisviel's soul into a new body, and she woke after half a day of sleep.
• Yoru Machi joked that Irisviel had become a boy, alarming her until she confirmed that she was still female.
• Irisviel scolded Yoru Machi for his cruel joke, then grabbed him when he began imagining ways to torment her family.
• Saber arrived at the manor and joyfully embraced the awakened Irisviel, who wondered whether Saber had married Yoru Machi.
• Saber blushed with humiliation as Irisviel learned that Medea had been making her wear shameful outfits and recording them.

Irisviel learned that Kiritsugu had escaped, while Saber urged her to leave him and Medea threatened her. Yoru Machi explained that the corrupted Holy Grail would release All the World's Evil when summoned, leaving Medea determined to pursue her wish despite the consequences.

• Saber told Irisviel that Kiritsugu had escaped and criticized him for abandoning her as bait.
• Saber urged Irisviel to sever ties with Kiritsugu and suggested Yoru Machi was a better match, but Medea threatened to kill Irisviel if she demanded more from them.
• Yoru Machi silenced their argument and revealed that the Holy Grail could not grant wishes safely because it had been corrupted.
• Yoru Machi explained that Angra Mainyu's defeat during the Third Holy Grail War tainted the Greater Grail with All the World's Evil, which would descend with the summoned Grail.
• Medea accepted that the Black Mud would accompany the Grail but declared she still intended to obtain its wish, regardless of how many people died.

Yoru Machi brought Medea and Saber to Mount Enzou to summon the corrupted Greater Grail, while Kiritsugu Emiya confronted them after Irisviel confirmed its danger. Yoru Machi explained that they could try to purify the Grail or destroy it, but Medea and a newly arrived Gilgamesh opposed Kiritsugu’s choice to destroy it.

• Irisviel left the Matou Family to investigate the Einzbern records, then told Kiritsugu Emiya what she learned about the Greater Grail and All the World's Evil.
• Yoru Machi took Medea and Saber to Mount Enzou and planned to summon the Greater Grail by supplying the missing mana himself.
• Saber questioned Yoru Machi’s decision, but Medea defended their right to use the Grail and blamed the Einzbern Family for its corruption.
• Kiritsugu Emiya arrived and asked whether the Holy Grail’s destruction of Fuyuki City could be avoided.
• Yoru Machi described purifying the Grail with a Heroic Spirit representing All the World's Good or destroying it outright.
• Kiritsugu chose to destroy the Holy Grail, but Medea refused to let anyone destroy it before her wish was fulfilled, and Gilgamesh challenged them for threatening his treasure.

As the corrupted Greater Grail emerged above Mount Enzou and poured All the World's Evil across the mountain, Yoru Machi prepared to destroy it. Gilgamesh attacked him with the Gouging Sword, but Yoru Machi survived, broke his assault, and sent him into the Grail's Black Mud.

• Gilgamesh arrived at Mount Enzou with Kirei Kotomine and insisted that the Holy Grail belonged to him, despite Kiritsugu Emiya warning that its corruption threatened Fuyuki City.
• The Greater Grail appeared and spilled All the World's Evil, rapidly turning the land around Mount Enzou into a barren wasteland.
• Yoru Machi drew his blade to destroy the Greater Grail, but Gilgamesh attacked first with the Gouging Sword and its world-splitting strike.
• Yoru Machi activated Fivefold Kaio-ken, shattered Gilgamesh's next slash with a punch, and mocked the limits of the Noble Phantasm in Gilgamesh's hands.
• Yoru Machi appeared before Gilgamesh, stabbed him through the chest, and kicked him into the Greater Grail's Black Mud.

As All the World's Evil engulfed Fuyuki City, Yoru Machi revealed that he planned to destroy the Greater Grail and build a new one so Medea and Saber could still pursue their wishes. He gave them the two wishes, then attacked the Greater Grail, whose Black Mud rose to shield it.

• All the World's Evil spread from Mount Enzou, devastating streets and leaving Kiritsugu Emiya distraught and unable to save the people of Fuyuki City.
• Irisviel pleaded with Medea to explain herself, while Saber fought her after rejecting her wish and deciding the Holy Grail had to be destroyed.
• Medea defended her pursuit of happiness, and Saber accused her of betraying Yoru Machi, who had also chosen to destroy the Grail.
• Yoru Machi explained that he could rebuild the Holy Grail using the Lesser Grail, Medea's knowledge of the Third Magic, and his own supply of magical energy.
• Yoru Machi promised the two wishes to Medea and Saber, then struck at the Greater Grail as Black Mud formed a barrier around it.

Yoru Machi failed to destroy the Greater Grail and followed it through a wormhole, emerging in Fuyuki City ten years later as the Fifth Holy Grail War approached. Saber and Medea were returned to their own eras, where both vowed to pursue their wishes in the next war.

• All the World's Evil shielded the Greater Grail from Yoru Machi's strike, and the Grail escaped into a spatial rift.
• Yoru Machi chased the Greater Grail through the rift, while Saber and Medea were sent back to Battleground Hill and Elysion Paradise and vowed to try again in the next Holy Grail War.
• Yoru Machi found himself in a changed Fuyuki City and learned from a television broadcast that ten years had passed.
• Yoru Machi realized that the Fifth Holy Grail War had begun early because the Greater Grail had spent little magical energy in the Fourth War.
• Archer Emiya sensed someone scanning all of Fuyuki City with detection magecraft and told Rin Tohsaka that an extraordinary person had arrived.

Rin Tohsaka and Archer detected a powerful search spell over Fuyuki City and suspected that Caster was behind it. Sakura Matou, now partnered with Medusa, entered the Holy Grail War hoping to bring back Yoru Machi and remained suspicious that Irisviel and Kiritsugu had caused his disappearance.

• Archer detected a citywide probing spell, and Rin suspected that Caster had cast it because its reach exceeded what a modern mage could manage.
• Medusa told Sakura that the spell's caster had immense Magic Power and could be located, though the conspicuous search might be a trap.
• Sakura handled the children's dresses Yoru Machi had given her and accused him of breaking his promise never to abandon her.
• Sakura recalled that Yoru Machi had vanished through a void wormhole ten years earlier while pursuing the Greater Grail, after she had been left behind because Mount Enzou was too dangerous.
• Sakura joined the Holy Grail War to bring Yoru Machi back and suspected Irisviel and Kiritsugu of having a role in his disappearance.
• Medusa noticed Sakura nearing darkness, and Sakura steadied herself by remembering the happy moments represented by the dresses.

Sakura feared losing the Fifth Holy Grail War, and Medusa promised to win the Grail for her. Meanwhile, Yoru Machi avoided returning to the Matou Residence, while Medea was summoned by Atram Galliasta and secretly planned to kill him.

• Sakura asked Medusa whether they would win, and Medusa vowed to seize the Holy Grail and grant her wish.
• Yoru Machi decided not to visit the Matou Residence and rented a place to lie low during the Holy Grail War.
• Atram Galliasta summoned Medea using the Golden Fleece after losing his original catalyst.
• Medea saw through Atram's friendly disguise and despised him for secretly turning children's life force into magical energy crystals.
• Medea pretended to cooperate with Atram while planning to kill him and free herself from his control.

Medea let Atram hunt for children to gather mana, hoping his crimes would draw Yoru Machi to her while she concealed her own plans. She left Atram alive for now, but resolved to kill him and wondered whether Sakura could serve as her next Master.

• Atram grew excited by Medea's claims about the Golden Fleece and trusted her more after she improved his magecraft.
• Atram proposed capturing children to turn their life force into mana crystals, and Medea allowed him to proceed so Yoru Machi might notice the murders.
• Medea recalled Yoru Machi and explained that she had preserved her memories of their previous Holy Grail War, determined to remain in the world until she could reunite with him.
• Atram offered to replenish Medea's mana, but she urged him to build their magical territory, and he left to find prey.
• Medea watched Atram depart with murderous intent and considered whether Sakura might still be alive and suitable as a backup Master.

Rin Tohsaka, Shirou Emiya, Saber, and Archer Emiya tracked the child-abducting Atram to his Magic Workshop and prepared to confront the Caster inside. Archer recognized that this Holy Grail War differed from his memories and agreed to lure the enemy out while the others held back.

• Atram abducted children and other vulnerable people to provide Medea with mana crystals for her workshop and Dragon Tooth Soldiers.
• Shirou summoned Saber after witnessing a battle at school, and Rin proposed an alliance with him after learning Saber’s parameters.
• Rin and Shirou investigated the disappearances and found Atram’s Mansion, where Archer and Saber sensed a Heroic Spirit inside.
• Shirou urged an immediate rescue, while Rin argued for caution because they knew little about their opponent.
• Archer identified the enemy as Caster and recalled that his present self, Shirou, and this altered Holy Grail War differed from his memories.
• Rin and Shirou agreed that Archer would infiltrate the workshop and lure the enemy outside without attacking.

Archer Emiya infiltrated Atram's Mansion to identify Caster and investigate whether the Holy Grail War matched his memories. Medea used the intrusion to persuade Atram to attack the enemy Master and seize the Servant, while keeping her own plans to escape him hidden.

• Archer Emiya entered Atram's Mansion, and Medea detected him in the underground Magic Workshop.
• Medea told Atram that an enemy Servant had arrived and warned that fighting could disrupt the unfinished magical territory.
• Medea persuaded Atram that they could use the territory to hold off the Servant while he captured the enemy Master.
• Medea promised that she could convert the captured Servant and gave Atram twenty Dragon Tooth Soldiers to help seize the Master.
• Atram accepted Medea's plan, trusting that his Command Spells would let him control her if necessary.