Ritsuka Fujimaru

Biodata

Name	Ritsuka Fujimaru (藤丸立香)
Alias(es)	Humanity's Last Master; 49th Master of the Chaldea Security Organization
Species/Race	Human
Gender	Female
Affiliation	Chaldea Security Organization
Occupation/Role	Master; corrector of Singularities; defender of Pan-Human History
Status	Active
First Appearance	Chapter 82: An Inharmonious First Encounter 82

Appearance

Ritsuka is a slender young woman with orange hair. During operations, she wears a magic-circle-inscribed Mage's Dress that protects an ordinary human body from hostile environments, including the Age of Gods. 207

• Orange hair.
• Wears a specialized Mage's Dress.
• The Mage's Dress regulates temperature and environmental conditions. 207

Personality

Ritsuka remains decisive under immediate danger. While falling from the troposphere during a Spiritron Transfer mishap, she immediately coordinated with Mash and prepared to summon support when an unknown magical reaction approached. 207

She is empathetic but does not retreat from necessary choices. Ivan the Terrible's question—whether Pan-Human History was worth destroying his world—leaves her saddened and conflicted, yet she continues the Lostbelt mission. 434

Ritsuka is also direct in her judgments. She openly refuses to trust Kirei Kotomine, and when Li Ye deploys a ritual capable of sinking Fuyuki, she resolves to defeat him and demand an explanation rather than yield to intimidation. 307 410

Abilities & Skills

Heroic Spirit Summoning

Ritsuka's defining ability is summoning and commanding Heroic Spirits through Chaldea's system. Her accumulated bonds allow her to call Servants whose legends or abilities fit a given threat.

• Summoned Siegfried on the battlefield to engage Li Ye and clear a sandstorm. 82
• Performed a Simple Summon to call a fluctuating, shadow-like Servant armed with twin blades; the Servant used the chant “Trace On.” 87
• Can cancel active summons to redirect magical energy toward Mash's defense. 88
• Can summon Servants specifically suited to an enemy's weaknesses, such as dragon-slaying heroes against the Crimson Dragon. 254
• Formed contracts even with Divine Spirit Servants, including Ishtar. 239 248
• Usually supports up to three Servants at once. Mash occupies one slot, while Servant Li Ye consumes the equivalent of two due to his extraordinary magical-energy requirements. 461
• Simple Summons normally create unconscious Spirit Core Shadows; a proper Servant summoning requires a completed circle established on a Ley Line node. 459 460 479

Command Spells

Ritsuka uses Command Spells to replenish Servants' mana and force decisive output.

• Reinforced Ishtar's magical energy and Noble Phantasm during the battle against Tiamat. 248
• Used two Command Spells to grant Li Ye victory while he and Mash fought Sigurd. 461

Master Tactics

Despite being physically human, Ritsuka is a capable field commander who directs Servants, assesses threats, and makes rapid tactical decisions.

• Ordered Mash and Da Vinci to respond to Li Ye's apparent hostility, then summoned Siegfried as reinforcements. 82
• Led the rescue of a mother and child through enemy lines in the Holy City before facing Gawain. 100
• Ordered Ishtar to provide heavy firepower against Tiamat while assigning Mash and Quetzalcoatl to defense against incoming lightning. 248
• Ordered Cú Chulainn to activate Gáe Bolg against the Valkyries. 482

Dragon's Might

Ritsuka can unleash Dragon's Might, producing a threatening magical presence across Moscow.

• Activated Dragon's Might while preparing to face Ivan the Terrible. 428
• Its exact nature and limits are not explained in the available material.

Equipment / Items

• Mage's Dress — A magical combat outfit adjusted by Da Vinci; enables environmental adaptation and temperature regulation. 85 207
• Command Spells — Used to replenish contracted Servants and amplify their attacks. 248 461
• Chaldea communication equipment — Used to coordinate with allies and receive tactical analysis remotely. 252 425
• Ley Line detector and snow gear — Issued for exploration in the Nordic Lostbelt. 466

Relationships

• Mash Kyrielight — Ritsuka's closest field partner. They coordinate instinctively in crises, fight together across Singularities, and support one another emotionally. 88 207 434
• Li Ye — Initially encountered as a hostile and unreadable presence, but later became a recurring ally whom Ritsuka trusts deeply. Their relationship is strained whenever Li Ye acts alone or pursues dangerous plans, including his Fuyuki ritual and the awakening of Ivan the Terrible. 82 207 307 425 427
• Leonardo da Vinci — Chaldea's advisor and acting director after the Singularity operations conclude. Ritsuka regularly relies on Da Vinci's technical support and discusses Chaldea's future with her. 85 408 412
• Romani Archaman — Provides remote support and warnings during early Singularities. Ritsuka recognizes him as the Chaldean acting director who supported her and Mash from behind. 100 207 265
• Cursed Arm Hassan — Ally in Camelot and later Shinjuku. Ritsuka respects his decision to sacrifice himself to summon the First Hassan. 114 123 352
• Gilgamesh — King of Uruk and a major ally during the Mesopotamian Singularity. Gilgamesh recognizes Ritsuka's early arrival and later assists the group in the Underworld. 212 231
• Ishtar — A Divine Spirit Servant contracted to Ritsuka. Ritsuka supports her Noble Phantasm with Command Spells during the battle against Tiamat. 239 248
• Miyamoto Musashi — A wandering swordswoman connected to Li Ye through lost history. Ritsuka cooperates with her against Ivan the Terrible. 427 434
• Kadoc Zemlupus and Anastasia — Initially opposing Lostbelt forces who seek an alliance with Chaldea to stop Ivan the Terrible. Ritsuka approaches Kadoc cautiously and later fights beside him against the Russian Lostbelt's ruler. 427 434

Story Role / Major Arcs

Camelot Singularity

Ritsuka enters the Sixth Singularity with Mash and Da Vinci, encountering Li Ye in a hostile first meeting. She seeks an audience with Ozymandias, commands summoned Servants against threats such as Sphinxes and Gawain, and joins the rebellion against the Lion King. 82 85 100 117

When meeting the First Hassan requires Cursed Arm Hassan's death, Ritsuka is distressed but respects Hassan's decision to proceed for the sake of the land's people. 123

Mesopotamian Singularity

Ritsuka and Mash are rescued by the supposedly dead Li Ye after falling through the sky into Mesopotamia in 2655 BC. Reunited with him, they travel to Uruk and become involved in the war against Gorgon, Kingu, and Tiamat. 207 212

During the final conflict, Ritsuka contracts Ishtar, commands multiple Heroic Spirits, and summons dragon-slaying Servants to oppose the Crimson Dragon. Her ability to forge bonds with Heroic Spirits is portrayed as a strength rivaling Gilgamesh's treasury of Noble Phantasms. 239 248 254

Fuyuki Holy Grail Conflict

Ritsuka confronts Li Ye when he attempts to destroy the Greater Holy Grail with a ritual modeled after Goetia's The Time of Birth Has Come, Thereby Correcting All Things. Unmoved by the ritual's destructive potential, she vows to defeat Li Ye and make him explain himself. 306 307

She later summons Shadow Servants, including Guardian EMIYA, to oppose Angra Mainyu and remains determined to see the crisis through alongside Li Ye and Artoria. 311 313

SE.RA.PH Incident

During the investigation of the sinking Seraphix oil rig in 2030, BB separates Ritsuka and the Servants into the simulated world of SERIAL PHANTASM, where the victory condition is to kill the other 127 Masters. 370

Ritsuka purchases tools from the BB Shop, challenges Suzuka Gozen, and ultimately persuades her to join Chaldea after the battle. 372 379

End of the Singularity Operations

Following the eradication of the Singularities, Ritsuka's tenure as Humanity's Last Master formally ends. Spiritron Transfer is frozen, most Servants depart Chaldea, and Ritsuka considers returning to her hometown while Mash remains at Chaldea. 408

Lostbelt Prologue and Russian Lostbelt

After Chaldea is seized and Pan-Human History is declared finished, Ritsuka escapes with Mash, Da Vinci, Holmes, and the remaining staff. 410 412

In the Russian Lostbelt, Ritsuka learns that Li Ye intends to awaken Ivan the Terrible. She accepts Kadoc and Anastasia's proposed alliance, confronts Ivan directly, and—alongside Mash and Musashi—brings about the Demonic Beast Emperor's defeat despite the moral cost of erasing the Lostbelt. 425 427 434

Nordic Lostbelt

Ritsuka continues operating from Chaldea's submersible in the Nordic Lostbelt. She investigates the frozen world with Mash and Holmes, summons Saber during the battle with Angrboda, and later supports Li Ye against Sigurd with Command Spells. 459 461

Notable Quotes

“Li Ye!! I will defeat you, and then I'll make you explain everything!” 307

“Then let me see it through, just as you witnessed in the Temple of Time!” 313

“We can only take it one step at a time, right?” 466

Trivia

• Ritsuka is described as an ordinary human whose Mage's Dress is necessary for survival in extreme environments. 207
• Multiple Spiritron Transfers have subjected Ritsuka to dangerous high-altitude freefalls. 207 361
• Her ability to form bonds is explicitly associated with the concept of Fate and allows her to keep meeting new Heroic Spirits. 123