Chapter Summaries

Iskandar invited Artoria, Ailin, and Gilgamesh to the Einzbern castle for a drinking party and proposed choosing the Holy Grail’s rightful owner through a bloodless question-and-answer contest. The gathering began with Gilgamesh arriving late and rejecting Iskandar’s wine.

• Ailin followed Iskandar’s chariot to the Einzbern castle and spotted dozens of masked Assassins trailing them.
• Iskandar smashed through the castle’s barrier and gates, then invited Artoria to drink with him in the courtyard.
• Iskandar proposed replacing the Holy Grail War’s battles with a contest in which heroes would discuss their merits, and Artoria agreed to hear him out.
• Ailin appeared and objected that the contest could not exclude him; Iskandar and Artoria accepted him as a candidate.
• Gilgamesh arrived and accepted Iskandar’s ladle, but complained that the wine was cheap.

At Iskandar’s banquet, Gilgamesh claimed the Holy Grail as his treasure, while Ailin revealed that his sword-root gave him a similar claim over swords. Iskandar declared he would take the Grail regardless, prompting Gilgamesh to prepare to punish him.

• Gilgamesh produced a golden wine jar and served its wine to Iskandar, Artoria, and Ailin, who analyzed the jar as a template for recreating it.
• Iskandar began a Holy Grail Q&A, and Gilgamesh claimed the Grail had always belonged to him because every treasure originated in his treasury.
• Artoria called Gilgamesh’s claim a lie, while Iskandar accepted that Gilgamesh might possess treasures beyond his knowledge.
• Ailin explained that every sword in his former world belonged to him through his root, earning Gilgamesh’s respect and confirming Iskandar’s suspicions about Ailin’s ability.
• Gilgamesh refused to grant the Holy Grail to anyone who was not his subject, and Iskandar declared that he would seize what he desired.
• Gilgamesh said Iskandar had violated his laws and that he would punish him, as Artoria watched solemnly.

At the Banquet of Kings, Iskandar revealed that he wanted a human body so he could pursue conquest himself, while Artoria defended her wish to save Britain. Ailin reassured Artoria by telling her of a parallel-world version who saved Britain, and the kings prepared to continue their contest as Iskandar discovered Ailin had emptied the wine jug.

• Artoria questioned Iskandar about why he would seize Gilgamesh’s Holy Grail, and Iskandar said he wanted a human body so he could conquer the world himself.
• Iskandar challenged Gilgamesh’s kingly path, while Gilgamesh vowed to kill him and Iskandar threatened to claim the treasures in his vault.
• Artoria declared that she wanted to change Britain’s fate, but Iskandar and Gilgamesh criticized her ideal of sacrificing herself for her people.
• Ailin told Artoria that he had seen her as the Pure White Knight King in a parallel world where Britain endured, restoring her confidence in her ideals.
• Artoria refused to surrender the Holy Grail, and Iskandar discovered that Ailin had secretly drained nearly all the wine from the jug.

Ailin explained that he had joined the Holy Grail War to gain help becoming a creator God and save a world, though the Grail itself could not fulfill that wish. When Assassins attacked the banquet intending to kill him, Ailin transported everyone into his Inner World, revealing an immense landscape filled with Zanpakuto.

• Ailin told Iskandar, Artoria, and Gilgamesh that he sought to become a creator God and finish creating a doomed world.
• Iskandar and Gilgamesh challenged Ailin to fight, while Artoria silently showed her resolve to win the Holy Grail.
• Ailin noticed Assassins surrounding the garden, and they revealed that Tokiomi Tohsaka had sent them to take Ailin's head.
• Ailin agreed to fight the Assassins and invited the others into his world, transporting them to a space filled with Zanpakuto.
• The Assassins recognized Ailin's Inner World as a powerful magecraft, while Iskandar and Artoria saw the vast collection of blades.

Ailin slaughtered the Assassins in his Inner World, then prepared to fight Gilgamesh, but Tokiomi Tohsaka used a Command Spell to summon Gilgamesh away. After Artoria refused to fight while Iskandar remained, Ailin said he believed Gilgamesh would eventually kill Iskandar and began explaining the limits of Iskandar’s Inner World.

• Ailin summoned countless Zanpakuto and killed the Assassins, then ended Unlimited Blade Works and returned everyone to Einzbern Castle.
• Ailin accepted Iskandar’s provocation and challenged him, but Gilgamesh also confronted Ailin as their weapons gathered behind them.
• Artoria protected Irisviel from the pressure while Iskandar carried the unconscious Waver away in his Chariot of Divine Might.
• Tokiomi Tohsaka used a Command Spell to recall Gilgamesh, and Ailin concluded that Gilgamesh had decided to kill his Master.
• Artoria declined Ailin’s offer to fight because she did not trust Iskandar, and Ailin explained that Iskandar relied on Ionioi Hetairoi to summon his former army.

Ailin tracked down Diarmuid at Kirei Kotomine’s villa and challenged him, intending to help him fulfill his wish to serve his lord faithfully. Diarmuid fought under a Command Spell’s enhancement, but Ailin overwhelmed him with named Zanpakuto, and the battle continued as Ailin drew one of them from the ground.

• Ailin explained to Artoria that Gilgamesh’s Ea was an Anti-World Noble Phantasm, then dispersed into spirit particles.
• After the banquet, Ailin sensed Diarmuid at a villa in Fuyuki City and challenged him outside its gates.
• Diarmuid told Kirei Kotomine to take Sola to safety, while Kirei used a Command Spell to order Diarmuid to hold Berserker back at any cost.
• Kirei left the villa to search for Berserker’s Master, with Volumen Hydrargyrum scanning for threats.
• Ailin told Diarmuid he would help him serve his lord faithfully and attacked him with named Zanpakuto from Sword Hill.
• Diarmuid blocked the barrage but was driven backward, and Ailin pulled a fallen Zanpakuto from the ground and recognized its name.

Ailin used Crimson Branch and a series of Zanpakuto abilities to overwhelm Diarmuid, forcing Kirei Kotomine to spend his remaining Command Spells empowering Lancer. Diarmuid launched a final attack, but Ailin countered it with Gravity Blade · Fujitora and knocked away Rhongomyniad, leaving Kirei and Diarmuid facing defeat.

• Ailin released Crimson Branch, whose pollen covered Diarmuid's spears in flowers and rendered the Yellow Rose unusable.
• Ailin advanced while attacking with different Zanpakuto abilities, and Diarmuid struggled to defend himself as Kirei Kotomine's first Command Spell boost began to fade.
• Kirei Kotomine used his remaining two Command Spells to order Lancer to unleash his full strength and defeat Berserker.
• Diarmuid's strength and speed surged, but Ailin summoned Gravity · Fujitora and used Gravity Blade to pin him in a crater.
• Diarmuid hurled Rhongomyniad and Gae Buidhe in a final attack, but Ailin's Gravity Blade—Fierce Tiger destroyed the attack's force and he knocked Rhongomyniad aside.

Kirei Kotomine sacrificed himself to help Diarmuid get Sola out of Fuyuki City, then Ailin defeated him and followed Diarmuid. After Diarmuid returned to fight Ailin, he was overwhelmed but declared himself satisfied with the Holy Grail War and free of regrets.

• Kirei Kotomine ordered Diarmuid to take Sola away while he delayed Ailin, and Diarmuid carried her beyond Fuyuki City’s boundary.
• Ailin shattered Kirei Kotomine’s Volumen Hydrargyrum and knocked him unconscious with Flash Blossom.
• Diarmuid left Sola outside the city and returned to help Kirei Kotomine, but Ailin intercepted him and they agreed to fight at full strength.
• Ailin fought Diarmuid with a Zanpakuto, overpowered him, and knocked Rhongomyniad and Gae Buidhe from his hands.
• Ailin asked whether Diarmuid was satisfied with the Holy Grail War, and Diarmuid said he had no regrets left.

Irisviel absorbed Lancer’s soul as Artoria worried that Berserker would soon defeat her too. Kariya Matou reunited with Aoi Tohsaka, struck her after she offered herself in exchange for his help, and revealed that Sakura Matou—not he—was Berserker’s Master.

• Irisviel sensed Lancer’s soul enter her body, while Artoria feared she would be Berserker’s next target.
• Ailin returned to Kariya Matou and said that two Servants had died and the Holy Grail War would likely end within two days.
• Kariya Matou told Ailin he intended to adopt Sakura Matou, and Ailin said he was glad to have helped change Sakura’s fate.
• Kariya Matou met Aoi Tohsaka at the church and grew angry when he learned Tokiomi Tohsaka had not come with her.
• Aoi Tohsaka asked Kariya Matou to use Berserker to help Tokiomi win the war and began to remove her clothes.
• Kariya Matou slapped Aoi Tohsaka and revealed that Sakura Matou was Berserker’s Master.

Aoi Tohsaka learned that Sakura was the Matou Family’s Master, then broke down after Tokiomi Tohsaka’s death while Rin took her home. Ailin warned Kariya Matou that Archer might still be in the war, and, after Artoria failed to appear for their arranged battle, he faced Iskandar’s sudden arrival.

• Kariya Matou told Aoi Tohsaka that Sakura represented the Matou Family in the Holy Grail War, and Aoi realized her husband and daughter might be forced to fight.
• Rin Tohsaka packed her belongings and led her mentally broken mother back to Tohsaka Residence after learning Tokiomi Tohsaka had been assassinated.
• Ailin explained to Kariya Matou that Archer could remain in the Human World after Tokiomi’s death and might gain a new Master through Assassin’s Master.
• Ailin searched for Kirei Kotomine’s familiars near the house he shared with Kariya Matou and Sakura, but found nothing suspicious.
• Ailin waited for Artoria at the outskirts, but she did not arrive, and he sensed no battle between Iskandar and Gilgamesh.
• Iskandar arrived in his Chariot of Divine Might, and Ailin gathered spiritual pressure to meet his charge.

Ailin fought King of Conquerors Iskandar, then agreed to wager his Inner World against Iskandar’s Divinity. Iskandar opened Ionioi Hetairoi, and Ailin began releasing his Bankai, Unlimited Blade Works.

• Ailin used Cero and Raikū to counter Iskandar’s Chariot of Divine Might, diverting its charge with a copied space.
• Iskandar proposed wagering for the swords in Ailin’s Inner World, and Ailin demanded Iskandar’s Divinity as his stake.
• Iskandar made the wager his Divinity against Ailin’s entire Inner World, and Ailin accepted.
• Iskandar launched his Chariot of Divine Might and expanded the battlefield into Ionioi Hetairoi, summoning his army.
• Ailin began chanting the incantation for his Bankai, Unlimited Blade Works.

Ailin's Bankai, Unlimited Blade Works, began overpowering Iskandar's Ionioi Hetairoi, and Ailin unleashed an army of Zanpakuto against the charging soldiers. After Waver used a Command Spell to restore Iskandar, his chariot, and the fallen soldiers, Suzumebachi prepared to use her strongest ability.

• Ailin deployed Unlimited Blade Works, whose stable space rapidly crushed Iskandar's Ionioi Hetairoi.
• Iskandar led his soldiers into Ailin's Inner World, and Ailin activated Hookless Punishment Muramasa to summon weapon-wielding shadows.
• Sesshomaru, Inuyasha, Issho Fujitora, and other named Zanpakuto joined the battle, inflicting heavy losses on Iskandar's army.
• Iskandar charged Tenken, whose Bankai clashed with the Chariot of Divine Might and injured Iskandar, Waver, and the chariot's steeds.
• Waver spent a Command Spell to restore Iskandar, the chariot, the steeds, and the defeated soldiers.
• Flowing Blade-like Fire watched the restored army, and Suzumebachi rose to unleash her strongest ability.

Waver used his remaining Command Spells to empower Iskandar and his army as Ailin’s Zanpakuto unleashed devastating attacks across the battlefield. Iskandar wounded Tenken but was driven back by Genryūmaru, while more powerful Zanpakuto joined the fight and Sesshomaru released his Bankai.

• Suzumebachi’s Bankai wiped out thousands of Iskandar’s soldiers, and Tenken inflicted further heavy casualties.
• Waver spent his two remaining Command Spells to strengthen Iskandar and the surviving Ionioi Hetairoi, then rode Bucephalus away from the battlefield.
• Iskandar charged Tenken with his chariot and Thunder-Hooved Steeds, injuring him before attacking other Zanpakuto; Genryūmaru retaliated with his Bankai and forced Iskandar back with lightning.
• Flowing Blade-like Fire, Senbonzakura, and Sode no Shirayuki entered the battle and killed large numbers of soldiers, while Hyōrinmaru held back.
• Sesshomaru released his Bankai, unleashing lightning across the battlefield as Inuyasha watched.

Inuyasha and the Zanpakuto helped overwhelm King of Conquerors Iskandar’s army, while Mihawk’s slash destroyed Iskandar’s chariot and left him badly wounded. Ailin entered Ionioi Hetairoi and asked Iskandar whether he would surrender his divinity or continue fighting.

• Inuyasha used Bankai—Meido Tetsusaiga and Meido Full Moon Break to draw Berserker’s soldiers into a vast Meido.
• Waver watched Ionioi Hetairoi suffer heavy losses as Ailin’s Zanpakuto overwhelmed Iskandar’s forces, while Ailin’s Unlimited Blade Works reforged fallen Zanpakuto.
• Mihawk unleashed a green slash that cleaved through Iskandar’s Chariot of Divine Might, killing the Thunder-Hooved Steeds and leaving Iskandar gravely wounded.
• Iskandar’s strongest soldiers caught him and gathered around him as he regained consciousness.
• Ailin ordered the Zanpakuto to retreat, entered Ionioi Hetairoi, and asked Iskandar whether he would surrender his divinity or keep fighting.

Ailin defeated Iskandar with a devastating Zanpakuto release, claimed his divinity, and spared Waver. Waver chose to preserve and spread Iskandar’s legend, while Ailin left the divinity unabsorbed because Gilgamesh’s Heaven’s Chain could exploit it.

• Iskandar rallied his remaining soldiers for one final charge against Ailin, who ordered his Zanpakuto to stand down.
• Ailin released the Shikai of his Zanpakuto, “Ailin,” and erased Iskandar and his soldiers with a single slash that shattered the Inner World and destroyed an asteroid.
• The Greater Holy Grail awarded Iskandar’s divinity to Ailin, who stored it in Unlimited Blade Works without absorbing it because of Heaven’s Chain.
• Bucephalus returned Waver safely to the Human World before dissolving, and Ailin spared Waver when he asked why he had not been killed.
• Waver said he would spread Iskandar’s life story and legends, while Ailin explained that neither he nor his Master considered Waver a threat.

Ailin reflected on his remaining goals in the Fourth Holy Grail War and planned to obtain Avalon after Kiritsugu transplanted it into Irisviel. The next morning, Kariya brought Sakura to the Matou Residence so Ailin could help secure it, after Kariya received a Clock Tower invitation for Sakura from Kirei Kotomine.

• Ailin spared Waver because Waver wanted to keep serving Iskandar and posed no threat to Sakura, then returned to Kariya Matou and Sakura Matou.
• Ailin planned to copy more of Gilgamesh's Noble Phantasms and analyze Avalon, expecting Kiritsugu Emiya to place Avalon in Irisviel before the war's end.
• Kariya told Ailin he intended to protect Sakura with defensive magic formations and later send her to the Clock Tower.
• Kariya explained that Kirei Kotomine had given Sakura a Clock Tower invitation after meeting them while preparing to leave Fuyuki City.
• Ailin agreed to help Kariya clean up the Matou Residence, where the cold from Sode no Shirayuki still lingered in the grounds.

Ailin warmed and protected the Matou Residence before sneaking into the Einzbern castle, where he found Irisviel, Artoria, and Kiritsugu Emiya. Artoria demanded answers from Kiritsugu, who was despairing over his lost chances in the Holy Grail War as Irisviel prepared to speak.

• Ailin used Tobiume to warm the Matou Residence, then set up long-lasting Eight-Trigram Twin Cliffs and Mirror Gate barriers for Kariya Matou and Sakura.
• Ailin flew to the Einzbern castle, concealed himself with Curved Light, and sensed Irisviel, Artoria, and Kiritsugu Emiya inside.
• Ailin found Irisviel lying amid petals, Kiritsugu Emiya holding her hand, and Artoria confronting Kiritsugu over the previous night, Avalon, and his secrets.
• Kiritsugu Emiya ignored Artoria's questions as he recalled his failed plans, his killing of Maiya Hisau, and his attack on Kariya Matou, and despaired that he could not defeat Archer and Berserker.
• Irisviel began to speak to Artoria, who had always protected her despite being Kiritsugu Emiya's Servant.

Irisviel explained her fate as the Holy Grail’s vessel and Kiritsugu’s actions to Artoria, but Ailin arrived and searched Irisviel for Avalon. Artoria revealed that she had the scabbard and fought Ailin with Excalibur, leaving him to consider how he could overcome her immortality.

• Irisviel told Artoria that she was a homunculus destined to become the Holy Grail’s vessel and explained why Kiritsugu had tried to ally with Archer’s Master.
• Ailin appeared beside Irisviel and used Synchronization to analyze her, while Kiritsugu and Artoria prepared to defend her.
• Ailin found no Avalon inside Irisviel and asked Artoria where the scabbard was; Artoria said she would not give up her strongest Noble Phantasm.
• Artoria unleashed Excalibur, and Ailin countered with King's Flash, destroying much of the Einzbern castle in their clash.
• Artoria’s wounds healed through Avalon’s power, and Ailin realized that defeating her would be nearly impossible while she possessed the scabbard.

Ailin fought Artoria inside Unlimited Blade Works to analyze Avalon, forcing her to unleash Excalibur and then testing a replica of the Noble Phantasm he had created. Their clash ended with Ailin’s Excalibur overpowering Artoria’s, leaving her struggling to withstand its force.

• Ailin summoned Unlimited Blade Works and attacked Artoria with a seemingly endless barrage of Zanpakuto.
• Artoria repeatedly unleashed Excalibur to destroy the swords and advance through the Inner World.
• Ailin created a replica of Excalibur, explaining that he had analyzed the genuine weapon during their previous battle at the Mion River.
• Ailin and Artoria clashed their Excaliburs, and Ailin’s replica matched the genuine weapon even at seventy percent power.
• Ailin fully unleashed his Excalibur and gradually overpowered Artoria, forcing her to brace against its advancing torrent.

Ailin fought Artoria inside Unlimited Blade Works to analyze Avalon, while Artoria relied on Avalon’s protection and tried to defeat him. Artoria’s reflected Excalibur failed to break Ailin’s defenses, and Ailin’s analysis of Avalon continued to advance.

• Artoria detonated her Excalibur to weaken Ailin’s attack, then Avalon restored her injuries as Ailin’s analysis of Avalon increased.
• Ailin and Artoria repeatedly clashed with their Excaliburs, and the battle continued past ten minutes as Ailin’s Avalon analysis reached 72 percent.
• Artoria realized Ailin was trying to analyze Avalon and released it to absorb and reflect his attack, increasing his analysis by two percent.
• Artoria combined Avalon’s reflected attack with Excalibur and unleashed it at Ailin.
• Ailin used Shitenkō Shichijū Wakun to block the attack, and its seven barriers stopped the torrent before it could reach him.
• Ailin rejoiced at the increased analysis rate and prepared to attack Artoria again.