Arc 3The Guardian of the Grail

Mayuri won the Holy Grail War, gained a human body, and rescued Tokiomi and Sakura before settling into life with the Tohsaka Family. Later, summoned as Leviathan to guard the Grail in Singularity F, she watched Chaldea’s group gather allies and then unleashed Leviathan against Medusa’s beasts.

  • Artoria renewed her contract with Irisviel, defeated Diarmuid, then fell to Mayuri’s charged attack after releasing four of Excalibur’s seals, while Avalon protected Irisviel.
  • Zouken attacked Tokiomi, but Mayuri purified him with holy lightning, entered the Greater Grail, and wished for a real body.
  • Mayuri destroyed the Grail to stop Angra Mainyu’s black mud, rescued Tokiomi and Sakura, and left Kayneth to help with the aftermath.
  • Mayuri helped Irisviel take Illya from the Einzbern main house, then stayed in Fuyuki as Tokiomi began making amends to Sakura.
  • The Counter Force summoned Mayuri to guard the Holy Grail in Singularity F, where she became Leviathan and concealed Lev’s death from Shirou Emiya.
  • Ritsuka Fujimaru, Mash, and Olga Marie explored ruined Fuyuki, allied with Cú Chulainn, and met Heracles, who transferred his Spirit Origin into Illya to save her.
  • Shirou warned Mayuri that Medusa’s beasts were approaching, so Mayuri unleashed Leviathan, which devoured the beasts, Medusa, and the Holy Grail before returning to its pit.
Chapters 51–75 Vol. 1 Read

Ch. 51Saber attacks

After waking, Irisviel learned that Kiritsugu was dead and the Lesser Grail had been taken, then formed a new contract with Artoria. Tokiomi sealed the Lesser Grail at the Tohsaka Residence while planning to sacrifice Mayuri, and Artoria and Irisviel met Diarmuid on the road there.

  • Artoria told Irisviel that Caster had taken the Lesser Grail, Kiritsugu had died in the castle explosion, and their contract had broken.
  • Irisviel formed a new Master-Servant contract with Artoria and received one Command Spell.
  • Mayuri delivered the Lesser Grail to Tokiomi, who sealed it in a jewel array and planned to sacrifice Mayuri after the other remaining Servants were defeated.
  • Tokiomi ordered Diarmuid to intercept Saber while Mayuri remained on standby at the residence.
  • Irisviel and Artoria traveled toward the Tohsaka Residence, where Artoria encountered Diarmuid and prepared to fight him.

Ch. 52Diarmuid's Exit

Artoria defeated Diarmuid after a prolonged highway battle, overcoming his shifting weapons and Command Spell enhancement. She then headed toward the Tohsaka Residence with Irisviel to face Caster, Cherub.

  • Artoria fought Diarmuid’s twin swords and spears, taking wounds from Yellow Rose of Mortality that would not heal.
  • Diarmuid used Kayneth’s second Command Spell to strengthen himself and pressured Artoria with rapid weapon changes.
  • As the Command Spell’s enhancement faded, Artoria knocked away Diarmuid’s yellow shortsword and broke his red longsword.
  • Artoria pierced Diarmuid’s throat with Excalibur, causing him to dissolve as the fifth Servant to exit the Holy Grail War.
  • Artoria turned toward the Tohsaka Residence to face Caster, and Irisviel followed her.

Ch. 53Thirteen Restraints

Mayuri led Artoria away from Fuyuki City to keep their battle from harming residents, then unleashed an overwhelming Sword of Blazing Flame. Artoria began Excalibur’s Thirteen Restraints to meet the attack, but only three of the first six seals were released.

  • Mayuri revealed herself to Artoria and proposed fighting outside the city, then flew east while Artoria carried Irisviel after her.
  • Artoria and Irisviel reached a remote area east of Fuyuki, where Irisviel waited behind a rock as Artoria faced Mayuri.
  • Mayuri transformed the Thunder Sanctuary into the Sword of Blazing Flame and charged an attack three times stronger than the one that had destroyed Gilgamesh.
  • Artoria judged that a normal release of Excalibur could not stop the attack and began the Thirteen Restraints: Round Table Decision.
  • Kay, Bedivere, and Gaheris approved the first, second, and fourth seals, while the third, fifth, and sixth seals remained unreleased.

Ch. 54Sword of Blazing Flame vs. Holy Sword of the Star

Artoria and Mayuri's Sword of Blazing Flame clashed in a battle of overwhelming power, and Mayuri's attack eventually overcame Excalibur. Artoria used her remaining strength to activate Avalon and protect Irisviel before she was eliminated from the Holy Grail War.

  • Artoria released four of Excalibur's thirteen seals and fired it against Mayuri's fully charged Sword of Blazing Flame above Fuyuki City.
  • Mayuri increased her attack's output, forcing the collision point downward as Artoria's magical energy dwindled.
  • Artoria remotely activated Avalon inside Irisviel, forming a golden barrier around her.
  • Artoria's Excalibur failed, and Mayuri's lightning swallowed Artoria, destroying her Spirit Origin and eliminating Saber from the war.
  • Avalon protected Irisviel from the attack, and the Command Spell on her right hand lost its color.

Ch. 55Sneak attack

Zouken Matou infiltrated the Tohsaka Residence and severed Tokiomi Tohsaka’s hand, apparently stripping him of the Command Spells needed to summon Caster. Tokiomi revealed that he still had a reserve Command Spell hidden on his left arm.

  • Zouken Matou used Crest Worms to enter the Tohsaka Residence undetected and assemble a body in Tokiomi Tohsaka’s study.
  • Zouken explained that his core worm had survived inside Sakura Matou and that he had waited for the Holy Grail War’s battles to end.
  • Zouken’s attack-type Crest Worms severed Tokiomi’s right hand, taking the two Command Spells on it.
  • Zouken revealed that the body Saber destroyed had been only a shell made of bugs and said Tokiomi could no longer summon Caster normally.
  • Tokiomi moved his left sleeve and showed Zouken a reserve Command Spell hidden on his upper arm.

Ch. 56Mayuri's wish

Mayuri killed Zouken Matou, spared Tokiomi Tohsaka, and entered the Lesser Grail to pursue her own wish. Inside the Greater Grail, a woman resembling Justeaze asked her to state it.

  • Mayuri answered Tokiomi Tohsaka's Command Spell by teleporting into the study and purifying Zouken Matou with holy lightning.
  • Mayuri knocked Tokiomi Tohsaka unconscious, treated his severed wrist, and left his hand beside him so he could reattach it.
  • Mayuri saw that the Lesser Grail had absorbed six Servant souls and transformed into a golden cup as the Greater Grail ritual began.
  • Mayuri touched the cup and was transported into the white space inside the Greater Grail, where she knew Angra Mainyu remained.
  • A white-haired, red-eyed woman resembling Justeaze addressed Mayuri as the victor of the Holy Grail War and asked her to state her wish.

Ch. 57A wish fulfilled

Mayuri wished for a real body, and the Holy Grail transformed her into a living person at the cost of most of its stored magical energy. The corrupted Grail then released Angra Mainyu's black mud over the Tohsaka Residence, and Mayuri flew out to stop it from spreading.

  • Mayuri asked the Holy Grail for a real body so she could live as a normal person, and it granted her wish.
  • The Holy Grail used more than half its stored magical energy to replace Mayuri's Servant body with flesh and blood, fulfilling her wish and breaking her contract with Tokiomi Tohsaka.
  • Mayuri left the shattered white space and realized the Holy Grail War was over as the Grail's remaining energy began producing Angra Mainyu's black mud.
  • Mayuri saw a black rift open above the Tohsaka Residence and watched the mud pour across the roof and walls.
  • Mayuri found Tokiomi Tohsaka unconscious, judged that the mud would soon spread into nearby neighborhoods, and flew out through a window to intervene.

Ch. 58Dealing with the Black Mud

Mayuri destroyed the Holy Grail to close the rift and then burned away the black mud engulfing the Tohsaka Residence. She rescued Tokiomi Tohsaka and Sakura Matou, and the chapter ended with Kayneth El-Melloi Archibald arriving as Mayuri declared the Holy Grail War over.

  • Mayuri used the Thunder Sanctuary to destroy the Holy Grail, closing the rift and stopping the black mud from pouring out.
  • Mayuri found Tokiomi Tohsaka and Sakura Matou alive beneath the black mud and carried them to safety.
  • Mayuri incinerated the remaining black mud with a lightning sphere, destroying the Tohsaka Residence and leaving a huge crater.
  • Kayneth El-Melloi Archibald arrived, saw the crater and the rescued Tokiomi and Sakura, and asked what had happened.
  • Mayuri told Kayneth that the Holy Grail War was over.

Ch. 59Cleaning up

After the Holy Grail War ended, Kayneth and Mayuri arranged to conceal the supernatural events and looked after Tokiomi Tohsaka and Sakura Matou. Tokiomi woke to find his residence destroyed and his wish unfulfilled, but his family’s Magic Crest intact, and he joined Kayneth in coordinating the cleanup with the Church.

  • Kayneth learned from Mayuri that she had destroyed the Holy Grail, collected the Servants’ souls, cleared away the Black Mud, and gained a real body through her wish.
  • Kayneth used Volumen Hydrargyrum to blur nearby witnesses’ memories, while Mayuri agreed to contact Risei Kotomine about witnesses farther away and a cover story.
  • Kayneth moved Tokiomi Tohsaka and Sakura Matou into an evacuated house and treated Tokiomi’s severed wrist.
  • Tokiomi woke and learned that Mayuri had knocked him unconscious before entering the Grail ritual and wishing for a real body.
  • Tokiomi found that his Magic Circuits were damaged but his Magic Crest remained intact, then contacted Risei Kotomine and coordinated the cleanup with Kayneth.

Ch. 60The Fourth War Ends

After the Holy Grail War ended, Sakura Matou woke with her memories of the Matou Family erased and found comfort with Tokiomi Tohsaka and Mayuri. As Fuyuki’s aftermath was managed, Tokiomi discovered Sakura’s magical abilities had greatly improved and offered Mayuri a place to stay; dawn broke over the recovering city.

  • Tokiomi Tohsaka and Kayneth arranged the public cover story and reported the war’s end while Tokiomi handled repairs and relocation in Fuyuki City.
  • Sakura Matou woke, recognized Tokiomi and Mayuri, and remembered nothing after her adoption into the Matou Family; Tokiomi reassured her that he still wanted her.
  • Sakura explored the living room and touched Mayuri’s wings while Mayuri stayed with her during Tokiomi and Kayneth’s absence.
  • Tokiomi examined Sakura and found the Crest Worms and Matou modifications gone, while her Magic Circuits had improved in quality and number.
  • Tokiomi invited Mayuri to stay with the Tohsaka Family, and she accepted while asking for a luxury tower apartment.
  • Sakura happily asked whether Mayuri would live with her, and dawn arrived over Fuyuki City.

Ch. 61Aftermath of the Fourth War

Mayuri helped Irisviel leave the Einzbern main house with Illya, and the mother and daughter began a new life in Fuyuki City. As the aftermath of the Holy Grail War settled, Mayuri embraced a quiet routine while Tokiomi cared for Rin and Sakura.

  • Mayuri offered to help Irisviel bring Illya away from the Einzbern main house, and Irisviel agreed.
  • Mayuri and Irisviel confronted Jubstacheit von Einzbern, who eventually let them take Illya.
  • Irisviel reunited with Illya, and the three returned to Japan, where Irisviel and Illya settled in Fuyuki City.
  • Mayuri settled into a lazy life in her apartment, while Kayneth and Tokiomi handled the war's aftermath.
  • Tokiomi resumed teaching Rin and Sakura, and resolved to make amends for sending Sakura to the Matou Family.

Ch. 62Shirou Senji

Mayuri agreed to leave the Greater Grail intact and offered to help the Tohsaka Family in the next Holy Grail War on her own terms. In the peaceful timeline, Shirou Senji grew up with his family and became fascinated by Risei Kotomine’s Bajiquan, which Risei offered to teach him.

  • Tokiomi Tohsaka explained that the Greater Grail remained beneath Mount Enzou, and Mayuri agreed not to destroy it in exchange for the option to assist the Tohsaka Master in the next war.
  • At a banquet, the guests ate Kirei Kotomine’s spicy cooking, while Caren stayed close to Risei Kotomine rather than her father.
  • Shirou Senji lived with Ken Senji, Hikari Senji, and Miyu Senji because Mayuri had prevented the fire that would have orphaned him.
  • The Senji Family began attending Mass at Risei Kotomine’s church after strange events unsettled Fuyuki City.
  • Shirou watched Risei practice Bajiquan and eagerly accepted the old priest’s offer to teach him a move or two.

Ch. 63Singularity F

Mayuri was summoned by the Counter Force to guard the corrupted Holy Grail in Singularity F, where she met Shirou Emiya. Shirou told her that Heracles had defeated King Arthur, leaving Mayuri stunned by the revelation.

  • Mayuri awoke in the crater where Mount Enzou had stood and learned that the Counter Force had summoned her to stop Chaldea's Master from repairing Singularity F.
  • Mayuri discovered that her Spirit body had transformed, with blond hair, black wings, a dark red Astral Dress, and a red-and-black halo.
  • Shirou Emiya arrived and assigned Mayuri to protect the Holy Grail while he intercepted enemies around Mount Enzou.
  • Mayuri asked whether King Arthur was guarding the Holy Grail, and Shirou explained that Heracles had defeated her a few days earlier.
  • Mayuri questioned how Heracles could have beaten King Arthur when she believed his Berserker form was weak.

Ch. 64Avenger

Mayuri learned that Heracles was an Avenger who had defeated Saber Alter, leaving Singularity F far removed from the version she remembered. Bound to the Holy Grail as its guardian, she accepted that she would have to oppose Chaldea when Ritsuka Fujimaru and Mash arrived.

  • Shirou Emiya told Mayuri that Heracles was an Avenger, had defeated Saber Alter, and had returned to Einzbern Castle without taking the Holy Grail.
  • Mayuri compared the altered Singularity with her memories and realized its events and her own summoning had diverged drastically from the original.
  • Shirou Emiya said Cú Chulainn remained active near Fuyuki Church, Shadow Servants wandered near the bridge and Shinto, and Chaldea's people would arrive soon.
  • Mayuri examined her changed form and confirmed she was now Leviathan, an Inverse Saber with a flaming sword and the Noble Phantasm Demon King Leviathan.
  • Mayuri understood that her contract required her to guard the Holy Grail and stop Ritsuka Fujimaru and Mash Kyrielight from repairing the Singularity, or her Spirit Origin would collapse.

Ch. 65Lev came calling

Mayuri explored the ruined, isolated Fuyuki City, gathered supplies, and settled into a makeshift shelter near the Holy Grail. On the sixth day, Lev Lainur Flauros appeared inside the crater and ordered her to protect the Grail for their king.

  • Mayuri surveyed Fuyuki City and found that the Singularity ended at a boundary beyond which nothing existed.
  • Mayuri scavenged a mattress, a banner, canned food, and water, then built a shelter in the crater.
  • Shirou Emiya returned occasionally to check the Holy Grail, while he and Mayuri kept their distance.
  • On the sixth day, Lev bypassed the crater’s defenses and appeared beside the altar.
  • Lev identified Mayuri as the Grail’s guardian Servant and ordered her to eliminate its enemies and serve their king.

Ch. 66The Great Beast Leviathan

Mayuri summoned Leviathan and killed Lev before he could transform, then discovered that Ritsuka Fujimaru and Mash Kyrielight had arrived in Singularity F. Bound by her contract to oppose them, she went to observe them in secret.

  • Mayuri summoned Leviathan and ordered it to attack Lev, whose transformation was interrupted when the strike triggered her instant-death skill.
  • Mayuri retrieved Lev’s corpse, threw it out of the crater, and concealed his death from Shirou Emiya.
  • Three days later, Mayuri detected Chaldea’s Spiritron Transfer and recognized Ritsuka Fujimaru and Mash Kyrielight among the arrivals.
  • Mayuri used Presence Concealment to fly to the transfer site and watched Ritsuka and Mash from a ruined rooftop.

Ch. 67Discovered

Ritsuka Fujimaru and Mash arrived in the ruined Singularity F, where Dr. Roman warned them to flee from a nearby presence with magical energy approaching Beast-class. Mayuri followed them and realized they were running from her.

  • Ritsuka Fujimaru and Mash found Fuyuki City consumed by magical fire and learned from Dr. Roman that its residents were dead.
  • Dr. Roman detected a terrifying magical energy reading near the girls and ordered them to run east.
  • Mayuri watched Ritsuka Fujimaru and Mash flee, then followed them while wondering what had frightened them.
  • Ritsuka Fujimaru and Mash met Olga Marie Animusphere and pulled her along as they escaped.
  • Mayuri overheard them mention a presence close to Beast-class, sensed no one else nearby, and realized they meant her.

Ch. 68An encounter and Cú Chulainn

Mayuri turned away from Ritsuka Fujimaru, Mash, and Olga Marie after realizing her presence frightened them, while the three regrouped and explored the ruins of Fuyuki. When Mash was overwhelmed by the blackened Rider Medusa, Caster Cú Chulainn arrived and intervened.

  • Mayuri flew back toward the Great Hollow, and Dr. Roman confirmed that her magical signature was moving away from the fleeing Ritsuka Fujimaru, Mash, and Olga Marie.
  • Olga Marie learned that Chaldea had been devastated and ordered the forty-seven injured Masters placed in cryogenic preservation before focusing on the Singularity.
  • Ritsuka Fujimaru, Mash, and Olga Marie explored the ruined Tohsaka Residence, Fuyuki Bridge, harbor, and church but found no survivors or clues.
  • Mash fought the Shadow Servants Cursed Arm Hassan and Musashibō Benkei, then struggled against the stronger blackened Rider Medusa.
  • Caster Cú Chulainn emerged from a nearby alley, struck Medusa’s wrist with his rune-covered staff, and offered to take over the fight.

Ch. 69Sharing Information

Cú Chulainn joined Ritsuka Fujimaru, Mash, and Olga Marie in their mission to reach the Great Hollow and recover the Holy Grail. After helping Mash activate an incomplete Noble Phantasm, he led the group toward Mount Enzou, where they encountered a greatly empowered Medusa.

  • Cú Chulainn defeated Cursed Arm Hassan and Benkei, while Medusa withdrew into the ruins.
  • Cú Chulainn agreed to work with Ritsuka Fujimaru and Olga Marie to end the twisted Holy Grail War and repair the Singularity.
  • Cú Chulainn told the group that Heracles had defeated the blackened King Arthur and that a new, powerful Servant had appeared near Mount Enzou.
  • Cú Chulainn trained Mash, who activated an incomplete Noble Phantasm that Olga Marie named Foundation of Human Order.
  • Cú Chulainn led the group southeast toward Mount Enzou, where they encountered Medusa with a greatly increased Spirit Origin.

Ch. 70Myth Reborn

Medusa unleashed a horde of powerful phantasmal beasts and ordered them to hunt Ritsuka Fujimaru and her companions without killing them. As the group fled, the Caucasian Eagle repeatedly attacked Mash while the Nemean Golden Lion and Lernaean Hydra closed in.

  • Medusa revealed Cerberus, the Caucasian Eagle, the Nemean Golden Lion, the Lernaean Hydra, and other phantasmal beasts among the ruins.
  • Olga Marie ordered Ritsuka Fujimaru, Mash, and Cú Chulainn to retreat, and Cú Chulainn's runes failed to damage Cerberus.
  • Medusa directed the beasts to chase the fleeing group without killing them, and the Caucasian Eagle struck Mash with its talons.
  • Cú Chulainn's primordial runes briefly bound the Nemean Golden Lion, but its golden light shattered them and it continued pursuing the group.
  • The Lernaean Hydra sprayed venom across the road as the Caucasian Eagle dove at the group again, and Mash blocked its second strike with her shield.

Ch. 71Safe for now

Olga Marie led Ritsuka Fujimaru, Mash, and Cú Chulainn into the forest outside Fuyuki City to escape Medusa and her demonic beasts. Medusa withdrew when she sensed Heracles’s presence in the forest, leaving the group safe for now as Cú Chulainn explained the beasts and the threat within.

  • Olga Marie directed the group northeast toward the forest while Cú Chulainn slowed their pursuers with runes and Mash blocked the Caucasian Eagle’s attacks.
  • The group reached the forest, where the trees hindered the Caucasian Eagle, Nemean Golden Lion, and Hydra, though Cerberus continued after them.
  • Medusa sensed Heracles’s presence deeper in the forest and retreated with her demonic beasts rather than enter his territory.
  • Cú Chulainn confirmed that the group was safe for now and identified the demonic beasts as creatures connected to Medusa’s bloodline.
  • Cú Chulainn told the group that Heracles’s presence was why Medusa had stopped chasing them.

Ch. 72The treasure protected by Heracles

Heracles led Ritsuka Fujimaru and the others through the forest and asked them to save his gravely wounded Master, Illya. He planned to merge his Spirit Origin with hers using Chaldea’s summoning system, and the group arrived at Einzbern Castle where she was being kept alive.

  • Cú Chulainn sensed a presence in the forest, and Heracles appeared before the group.
  • Heracles asked Ritsuka Fujimaru and the others to help save his wounded Master.
  • Heracles explained that the Holy Grail War had collapsed, and that he had used the Golden Apple of the Hesperides to keep Illya alive.
  • Heracles said he had defeated the blackened Saber at Mount Enzou but left the Holy Grail because it could not grant wishes.
  • Heracles revealed he wanted to merge his Spirit Origin with Illya through Chaldea’s system so God Hand could resurrect and heal her.
  • Heracles led the group to the intact Einzbern Castle, where he had been protecting Illya.

Ch. 73Illya Awakens

Heracles warned Olga Marie that the Counter Force had preserved the Singularity for a reason and helped Chaldea transfer his Spirit Origin into his dying Master, Illyasviel von Einzbern. After Heracles disappeared, Illya awakened.

  • Heracles told Olga Marie that the Counter Force had deliberately preserved the Singularity and urged Chaldea to resolve the other Singularities first.
  • Heracles warned that the Servant guarding the Holy Grail was too powerful for Mash as she was and revealed that Illyasviel von Einzbern was his Master, kept alive by a Golden Apple.
  • Olga Marie proposed using Mash's shield as a temporary summoning system to transfer Heracles's Spirit Origin into Illya.
  • Heracles willingly dissolved into golden motes that flowed into Illya, while Mash caught her as his support vanished.
  • Mash laid Illya on the bed, and Illya opened her wine-red eyes.

Ch. 74Assault on Mount Enzou

Illya woke to learn that Berserker had merged his Spirit Origin into her, then joined Ritsuka Fujimaru’s party. At Mount Enzou, Medusa’s army of magical beasts approached the Great Hollow, where Mayuri sent the Leviathan to meet them; it swallowed the Nemean Lion and gained its ability to negate weapons made by human civilization.

  • Illya asked where Berserker was, learned he lived inside her, and decided to join the party with Olga Marie’s approval.
  • Shirou Emiya spotted Medusa leading a large force of magical beasts toward Mount Enzou and reported their approach to Mayuri.
  • Mayuri refused to intercept Medusa herself and summoned the Leviathan, ordering it to eat every beast.
  • Medusa expected an easy victory until the Nemean Lion saw the Leviathan emerging from the crater.
  • The Leviathan swallowed the Nemean Lion whole and gained its ability to negate weapons made by human civilization.
  • Medusa recoiled in fear but hesitated to retreat, hoping her remaining magical beasts could still win.

Ch. 75The Evolved Leviathan

Leviathan devoured Medusa and her magical beasts, including the Caucasian Eagle and the Holy Grail, then transformed into a dark purple, fluorescent green-armored form with wings, three jaws, and three tails. After shaking Fuyuki City with its howl, it returned to its pit, where Mayuri briefly noticed its new appearance and went back to sleep.

  • Leviathan defeated and devoured Hydra and Cerberus, then ate the fleeing magical beasts on the ground.
  • Leviathan leaped into the air, burned through the Caucasian Eagle’s wing with a beam, and swallowed it, gaining wings.
  • Leviathan flew after Medusa and swallowed her along with the Holy Grail in her Spirit Origin.
  • Leviathan transformed, gaining dark purple armor, fluorescent green lines, three jaws, three horns, enormous wings, and three tails.
  • Leviathan howled over Fuyuki City and returned to its pit, while Mayuri called its new form a new skin and went back to sleep.
Arc 3 of 11
Arc 3 of 11