Chapter Summaries

Rin, Jizi, and Shirou imprisoned Rider and agreed to work together while searching for the school’s hidden Master and confronting Caster. That night, Assassin entered the workshop and threatened to expose Sakura Matou unless Rider agreed to do anything to protect her.

• Rin concluded that another force at the school had compelled Rider’s Master to abandon the Command Seals and escape, and the group decided to keep Rider imprisoned while they waited for a response.
• Rin, Jizi, and Shirou agreed to maintain their alliance for two weeks and focus on finding the Master at school and dealing with Caster at Ryuudou Temple.
• Rin accepted Jizi’s invitation to stay at the Emiya Residence, and Shirou practiced Reinforcement Magecraft before going to bed.
• Assassin visited the imprisoned Rider late at night and threatened to reveal that Sakura Matou was her true Master to Rin or Shirou.
• Rider said she would do anything to protect Sakura, and Assassin began tormenting her while trying to reach her Spirit Core.

Jizi discussed a plan with Archer before Kiko Emiya woke, and the group prepared to investigate the escaped Master. The chapter ended when Rin and Jizi sensed a surge of magical energy coming from the backyard, where Jizi had captured a Servant.

• Jizi drew Archer out on the rooftop, revealed what she knew about him, Zouken Matou, and Sakura, and asked him to cooperate with her plan.
• Kiko Emiya woke feeling unusually fatigued, then found Shirou training with Saber in the dojo.
• Jizi advised Shirou to focus on surviving until help arrived, then sparred with Saber until their competitive match exhausted her.
• Rin assigned Archer to watch Ryuudou Temple and Saber to keep an eye on the other Servant while the group continued searching for the escaped Master at school.
• Rin and Jizi sensed magical energy surging from the backyard and realized that something was happening to the Servant Jizi had captured in her Workshop.

A dangerous black mist engulfed the backyard, and Rin discovered the mask connected to [Assassin] could let her enter it safely. The captive Servant escaped and attacked the barrier, leaving everyone preparing for battle.

• Rin tested the black mist with a ruby, which it infiltrated until the gem exploded against the barrier.
• Saber reminded everyone that [Assassin] had appeared with similar mist, and Jizi showed them the damaged mask but refused to let [Assassin] possess her.
• Rin put on the mask and entered the mist, which gathered around her without attacking; after hearing chains, she retreated and the mask absorbed the mist.
• Rin concluded the captive Servant had probably escaped, and Archer warned that the mist had enabled the prisoner to break free.
• The prisoner hurled chained daggers at the barrier, then pressed her face through the mist, prompting Rin and Jizi to reinforce the barrier and prepare for battle.

Rin, Jizi, Saber, and Archer defeated the black-mist-corrupted Servant and moved their base to the Tohsaka Residence, where they prepared for the next day. The chapter ended with Jizi asking Rin about her relationship with Assassin.

• Saber and Archer attacked the older-sister-type Servant while Rin drew magical energy from Jizi to drive back the black mist.
• Saber used Avalon to repel the mist and left the older-sister-type Servant unconscious.
• Rin decided the group could no longer safely remain at Shirou’s house, so they relocated to the Tohsaka Residence with the prisoner.
• Rin and Jizi set up defenses, while Archer watched Ryuudou Temple and Shirou trained with Saber.
• That night, Jizi shared Rin’s room and asked what relationship Rin had with Assassin.

Rin explained to Jizi how Assassin had protected her during the Fourth Holy Grail War and admitted she had mistaken Jizi for Assassin’s replacement because they looked alike. After Rin fell asleep, Jizi prepared to leave, but Rin caught her in a magecraft trap and called her “Satsuki Sister.”

• Jizi asked Rin what her relationship with Assassin had been, and Rin pulled her close before answering.
• Rin recounted how Assassin had played with her, protected her and her classmates, brought her wounded father to safety, and died after giving her the Mystic Eye.
• Rin confessed that Jizi reminded her of Assassin and apologized for treating her as a replacement before falling asleep.
• Jizi revealed she had long been captivated by Rin, kissed her, and changed into black Brotherhood robes to leave.
• A Magic Circle trapped Jizi at the window, and Rin woke up and confronted her as “Satsuki Sister.”

Jizi was caught sneaking out by Rin, who joined her on a nighttime trip across Fuyuki. They reached Ryuudou Temple, where Jizi planned to meet Caster and put a few pieces in place, while promising Rin answers she might not tell truthfully.

• Rin caught Jizi trying to leave and demanded an explanation, then changed into her clothes and insisted on accompanying her.
• Jizi carried Rin across the rooftops of Miyama Town, and Rin questioned her about her state, the black mist, and her connection to past events.
• Jizi identified the purple-haired Servant as Rider and said she knew through her intelligence work.
• Jizi and Rin arrived at Ryuudou Temple, where Jizi cut through a bounded field and led Rin inside to meet Caster.
• Rin agreed to follow Jizi but warned that she expected answers afterward, while Jizi privately planned to conceal some truths.

The chapter presented profiles for Kiko Emiya, Jizi, and Rin Tohsaka, outlining their histories, abilities, and equipment. It ended with Rin’s three specially enchanted gems whose purpose remained unknown.

• Kiko Emiya’s profile explained how Heroic Spirit Jizi survived the Fourth Holy Grail War by splitting her soul, and how Kiritsugu adopted her after she lost her memories.
• Kiko’s profile described her swordsmanship, limited magecraft, knowledge of magecraft materials, and enchanted equipment, including Jizi’s sealed mask.
• Jizi’s profile revealed that she was a transmigrator tasked with dealing with All the World’s Evil, but had instead been used as its vessel and was gradually being consumed by it.
• Jizi’s profile listed her abilities to imitate techniques, manipulate black mist, and use weapons including Stripe and Fire’s Delight.
• Rin Tohsaka’s profile described her return to Fuyuki, her bond with Kiko and Jizi, and her mastery of magecraft and Mystic Eyes of Replication.
• Rin’s profile detailed her supply of gems and three exceptionally powerful gems whose functions she had never revealed.

Jizi and Rin entered Ryuudou Temple, where Jizi confronted Caster and revealed she was a Servant who had survived the Fourth Holy Grail War by another method. Caster demanded to know Jizi’s identity, but Jizi challenged her to prove herself before she would share what she knew.

• Jizi carried Rin through Ryuudou Temple’s barriers and called out to announce their arrival.
• Caster appeared in the courtyard, and Jizi and Rin teased her about her looks before discussing why she had allowed them into her territory.
• Caster praised Rin’s abilities and questioned what Jizi really was, so Jizi demonstrated her rank A Presence Concealment and caught Caster from behind.
• Jizi told Caster she was a Servant left over from the Fourth Holy Grail War who had remained in the world by another method.
• Caster demanded to know who Jizi was, and Jizi challenged her to prove she was worth giving that information to.

Jizi brought Rin Tohsaka to Ryuudou Temple to observe Caster’s ancient magecraft, using their exchange of attacks to help Rin learn her techniques. After Jizi provoked Caster by reciting Medea’s lament, Caster bound her with magical chains.

• Jizi decapitated a magical puppet of Caster, which exploded, but escaped the blast and reappeared near Rin.
• Jizi confirmed that she had brought Rin to watch Caster’s magecraft, and Rin realized her Mystic Eyes of Replication had memorized the techniques.
• Caster attacked Jizi with fire and magical projectiles while Jizi dodged and kept Rin positioned to observe her spells.
• Jizi taunted Caster by reciting Medea’s lament and referring to her story, prompting Caster to angrily deny the words were hers.
• Caster unleashed a barrage of magecraft and trapped Jizi in several magical chains, leaving her hanging before Caster.

Jizi explained the truth behind the corrupted Holy Grail and her role in the Fourth War, but Rin uncovered gaps in her account and demanded to know Jizi’s relationship with Kiko Emiya. Jizi turned away and asked whether Rin truly needed to know.

• Jizi told Caster that the Grail War could be kept unfinished and revealed that Central Park sat on an unclaimed leyline before carrying Rin away from Ryuudou Temple.
• On the hill behind the Tohsaka Residence, Rin questioned Jizi about the Holy Grail War’s hidden purpose, and Jizi explained that Angra Mainyu had corrupted the Grail into an evil wish-granting force.
• Jizi recounted how Irisviel became the Lesser Grail, Kiritsugu ordered Saber to destroy it, Jizi died in the blast, and Saber returned to the Heroic Spirit Hall.
• Rin pointed out that Kirei and Gilgamesh had survived the Fourth War and questioned how Kiritsugu learned the Grail’s truth and how Jizi had returned.
• Rin asked what Jizi’s relationship was with Kiko Emiya, and Jizi avoided her gaze and asked whether Rin had to know.

Sakura drew All the World's Evil out of Jizi and forced her into becoming her Servant before Rin and Shirou brought them back in the final battle. Jizi and Kiko Emiya's consciousnesses merged into the Mask, their original body was destroyed as the evil's vessel, and Rin made a replacement body.

• Old Worm sent Sakura undercover to the Tohsaka Residence, where Shirou and Jizi talked her through a mental breakdown.
• Sakura took Jizi's offered hand, drew out part of All the World's Evil, and forced Jizi to become her Servant.
• Rin and Shirou brought Jizi and Sakura back in the final battle.
• The Counter Force demanded the destruction of All the World's Evil after it leaked from its seal.
• Jizi and Kiko Emiya's consciousnesses merged and transferred into the Mask, while the original body became the vessel and was destroyed.
• Rin used secretly learned doll-making techniques to create a new body, and everyone lived together happily.

Rider took Weber shopping to prepare for a banquet, then arrived at the Einzbern castle and challenged Saber to settle their differences over wine. Saber accepted the contest, and Rider hinted that an unexpected guest would attend.

• Rider took Weber shopping for wine and explained that Aster was gathering intelligence while they prepared a banquet for the kings in the Holy Grail War.
• Rider encouraged Lancelot to think about what he would say when he reunited with his king, and Lancelot insisted that his title was Knight of the Lake.
• Kiritsugu Emiya left the Einzbern castle after making a call, and an attack on the forest barrier brought Irisviel and Saber outside to confront the intruder.
• Rider entered the castle carrying a wine barrel and said he had chopped down trees in the forest to reach the gates.
• Rider invited Saber to a banquet and proposed that they settle their differences in a bloodless battle of wine, which Saber accepted.
• Rider told Saber that an unexpected guest would attend the banquet.