Shirou

Biodata

Feature	Details
Name	Shirou Amamiya (士郎)
Alias(es)	Fae Knight Arthur; Nameless King; Artorius le Fae; Faker
Species/Race	Human; later transformed into a non-human being through his Fae Kingdom history 126 133
Gender	Male
Affiliation	Fae Kingdom; Fae Round Table; Hundred-Faced Hassan's faction; Einzbern household
Occupation/Role	King of Knights of the Fae; Holy Sword Wielder; Magus; Holy Grail War Master
Status	Alive; sixteen in his latest documented appearance 438
First Appearance	Chapter 1

Power Progression

Stage / Realm / Level	Chapter	Notes
Returned Fae magic	1	Returns to Japan in his seven-year-old body but confirms that his Fae magic still works.
Boundless Mage's Eye	4	His originally C-rank Clairvoyance develops into a magically modified Mage's Eye after prolonged exposure to betrayal, malice, and training in Fae Britain.
Leadership in Despair	12	His kingly charisma, developed while establishing the Fae Round Table, allows him to inspire others to act despite hopeless circumstances.
Dead Count Shapeshifter	26	Lady Avalon modifies his Command Spells to transform him into his eighteen-year-old body for 180 seconds; repeated use brings him closer to death.
Nameless King	53	Regains an adult body, activates projection magic, and reveals the calculating side he had concealed behind his gentle public persona.
Blades of Chaos: Special Attack—Monstrosity	55	Awakens a new technique and annihilates Caster's Sea Monster in 148 seconds.
Lake of Holy Swords	80	Deploys a self-producing lake of Holy Swords whose firing speed lets him stalemate Gilgamesh's Gate of Babylon.
Fae Domain: Unlimited Blade Works	114 118	Establishes a Fae Domain with Forging, Storage, and Reconstruction functions; analyzes and reconstructs Ea within the domain.
Dragon Gauntlet and Time Control	139 140	Uses Time Control alongside the Gauntlet of the Red Dragon Emperor, which doubles his strength every ten seconds.
Unlimited Excalibur Works	374 386	Reaches a projection state that resonates with Holy Swords from parallel worlds, producing an EX-rank savior fantasy.
Infinite Core	382 386	Combines the Heart of Albion and Electromagnetics into a practical second-kind perpetual-motion mechanism, generating inexhaustible combat mana.

Background / History

Fae Kingdom

Shirou lived in another Britain as the Fae Knight Arthur. He unified Britain, established the Fae Round Table, and became its King of Knights, though he personally considered himself less virtuous and charismatic than Pan-Human History's King Arthur 1 12 23.

His early Fae Kingdom career included becoming an apprentice knight at ten and surpassing most adult knights in swordsmanship by thirteen. His Projection Magic allowed him to reproduce swords and their properties, including the Blades of Chaos, Muramasa, and Aegis 121.

Following battles against beings such as Albion and Crimson Moon, Shirou gained divinity through the Holy Lance, consumed the Dragon of the Crown's heart to form an exceptional Mana Core, and acquired a powerful bloodline after Crimson Moon drained his blood. These transformations left him no longer fully human 126 133.

Return to Japan

In 1993, Shirou returned to Japan in the body of his seven-year-old self. Alienated from the orphanage and his hometown, he left without attachment while retaining the magic and memories of his life in Fae Britain 1.

He befriended Shinji and Sakura Matou after protecting Shinji from bullies, then stayed with the Matou family while learning modern history and magecraft through Makiri. Though he valued the Matous, Shirou ultimately viewed their home as a place to stay rather than a place where he belonged 3 10 11.

Fourth Holy Grail War

After receiving Command Spells, Shirou entered the Fourth Fuyuki Holy Grail War and summoned Lady Avalon, an unclassifiable Extra-class Servant whose status could not be read by either his Master authority or Mage's Eye 22 24.

He recruited Hundred-Faced Hassan after recognizing that Kirei Kotomine and Tokiomi Tohsaka treated Assassin as a disposable asset. Their alliance provided Shirou with intelligence on the other Masters, Servants, and the Tohsaka-Kotomine conspiracy 30 32.

Shirou fought Gilgamesh repeatedly, first using the Lake of Holy Swords to nullify Gate of Babylon's advantage in firing speed, then deploying Unlimited Blade Works to force Gilgamesh into a decisive confrontation. Within the Fae Domain, he analyzed and reconstructed Ea, defeating the King of Heroes with its replicated form 80 81 114 118.

He later learned from Emiya Kiritsugu that the Holy Grail War was a ritual intended to gather Heroic Spirit souls and reach the Root, while the corrupted Greater Grail threatened humanity's extinction. Shirou resolved to stop the ritual without sacrificing Irisviel 100 101.

Later Activities

After the war, Shirou remained in Japan with Irisviel, Lady Avalon, and the Einzbern homunculi. His body deteriorated from the accumulated cost of his powers, leading him to seek a replacement vessel or prosthetic limb from Touko Aozaki 147 148.

He became involved in the conflicts surrounding Misaki City, Touko and Aoko Aozaki, Ryougi Shiki, Araya Souren, and the Ogawa Apartment incident. Throughout these events, he refused to submit to Touko's possessive worldview while maintaining that he would protect Aoko without choosing a side in the sisters' conflict 172 173 219.

In the Romanian Holy Grail War, Shirou operated under the identity of Artorius, fought Servants including Astolfo, Siegfried, Karna, and Vlad III, and became a central force against Shirou Amakusa Tokisada's plan for universal salvation 273 284 318 327.

Later, he attended the Mage's Eye Collection Train auction with Rin Tohsaka, confronted Dead Apostles including Nero Chaos and Rita Rozayen, and used Enuma Elish against Nero Chaos's 666-beast existence before falling into Rita's mental attack 419 435 437 438.

Appearance

Shirou is a red-haired, amber- or twilight-eyed boy whose physical age does not match the age and experience carried by his soul. He initially returns in a seven-year-old body, can temporarily assume an eighteen-year-old form through Dead Count Shapeshifter, and is sixteen by his confrontation with Rita Rozayen 1 26 438.

• Red hair and amber eyes; his gaze is repeatedly noted as unusually mature and perceptive 273 274.
• His Boundless Mage's Eye gives his eyes an unnerving ability to observe character, causality, and hidden traits 4 425.
• A white lock of hair appears after repeated use of Dead Count Shapeshifter 59.
• Often conceals his identity through cognitive-obstruction magic or the Mage's Eye Killer glasses 45 419.
• His adult combat form is associated with the title “Nameless King” 53.

Personality

Shirou is protective by instinct. He repeatedly intervenes when he sees someone being bullied, endangered, or treated as expendable, and he measures “correctness” by whether he can accept standing by while harm is done 3 102. He has no personal wish for the Holy Grail; his priorities are protecting the people around him and preventing power from falling into cruel hands 60 117.

His compassion is tempered by a calculating, pragmatic side. He can deceive enemies, weaponize misinformation, and use Ryunosuke Uryu's corpse as an experimental subject without guilt because he considers the serial killer an acceptable risk 28 53 83. Even so, he does not believe in killing merely for convenience: after defeating Rin Tohsaka, he stabilizes him and leaves judgment to others rather than executing him 96.

Shirou rejects relationships based on ownership, domination, or submission. He is willing to be Touko Aozaki's companion, but refuses to become her possession; this principle also shapes his preference for alliances built on trust and mutual respect 172.

Abilities & Skills

Boundless Mage's Eye

A highly developed Clairvoyance ability transformed through Fae Kingdom experience and magical modification.

• Grants exceptional static and dynamic long-range vision suited for combat 4.
• Perceives hidden threats, personal dispositions, malice, and causal origins 29 163 425.
• Lets Shirou rapidly assess battlefields, detect infiltration, and predict assassination attempts 97.
• Can be obstructed: it failed to read Lady Avalon's class or abilities, while Astolfo's Luna Break Manual can negate Mage's Eye effects 24 283.
• Its effectiveness is further reduced when Shirou wears the Mage's Eye Killer 419 438.

Projection Magic

Shirou's primary magecraft allows him to analyze, reproduce, and deploy weapons he recognizes as “swords.”

• Can project ordinary weapons, Noble Phantasms, Holy Swords, and select Divine Constructs after sufficient analysis 95 118 261.
• His projection speed and combat familiarity let him deploy large numbers of weapons almost instantly 80 214.
• He can imitate martial techniques after observation, including Rin Tohsaka's Sliding Step, which he mastered after seeing it twice 95.
• His projections are limited by the quality of his body and mana supply; mass-produced Holy Swords are generally weaker than Gate of Babylon's originals 80.
• Divine Constructs cannot ordinarily be projected by a human mind without the Fae Domain's reconstruction function 118.

Fae Domain: Unlimited Blade Works

Shirou's strongest domain, initially mistaken for an Inherent Barrier but later identified as a Fae Domain.

• Forging — subjects intruders to repeated instant-death judgments; failed targets are forged into replicas of Holy Swords 115 118.
• Storage — records swords Shirou has seen, analyzed, and projected, allowing direct deployment without repeating the normal projection process 115 118.
• Reconstruction — analyzes, decomposes, and reconstructs armaments released within the domain, enabling the replication of Ea after Gilgamesh deploys it inside the domain 118.
• Forges Gilgamesh's severed arm into a Holy Sword and uses it to compel him to draw Ea 115.
• The domain is not intended for a human body and causes severe side effects after use 118.

Holy Sword Arsenal

Shirou possesses or projects a broad arsenal of Fae, Holy, and Divine weapons.

• Lake of Holy Swords — continuously produces Holy Swords at a firing rate fast enough to contest Gate of Babylon 80 81.
• Excalibur / Unlimited Excalibur Works — his greatest Holy Sword technique, capable of resonating with Holy Swords from parallel worlds 374 386.
• Vortex Sword (Ea) — a reconstructed World-Encompassing Noble Phantasm used against Gilgamesh and Nero Chaos 118 437.
• Caladbolg — a Fae Sword used to defeat the Nameless King and Oldest King in aerial combat 116.
• Ascalon — a Dragon-Slaying Holy Sword hidden within the Gauntlet of the Red Dragon Emperor 140.
• Harpe — a projected anti-undead divine weapon based on the sword used against Gorgon 330.

Martial Arts, Archery, and Swordsmanship

Shirou's combat skill is the product of long experience rather than his physical age.

• Defeated the fourteen-year-old kendo prodigy Taiga Fujimura despite her attempt to sabotage the match before it began 14.
• Can fight effectively with one arm, wield swords with either hand, and mimic unfamiliar martial techniques 95.
• Uses archery to intercept Emiya Kiritsugu's assassination attempt on Irisviel 97.
• Developed bare-handed combat after returning to Japan, treating his limbs as though they were swords 247.
• Uses an eight-strike adaptation of Heracles' Nine Lives technique 306.

Dead Count Shapeshifter

A self-enhancement system created by Lady Avalon from Shirou's Command Spells.

• Temporarily transforms Shirou into his eighteen-year-old body for 180 seconds 26.
• Enables a physically frail child to contend with Servants for a short period 26.
• Cannot replenish mana or command a Servant as normal Command Spells can 111.
• Each activation accelerates his approach toward death and contributes to the deterioration of his body 26 60 148.

Dragon Kind Power

Shirou's Fae Kingdom transformations grant him draconic power and an exceptional Mana Core.

• The Heart of Albion provides immense magical output and later contributes to his Infinite Core 133 386.
• His Dragon Kind intuition lets his body react to attacks beyond normal human thought or reflex 115.
• The Gauntlet of the Red Dragon Emperor doubles his strength every ten seconds, though his body can only withstand limited amplification and its duration falls if he is injured or exhausted 140.
• Can use Mana Burst for high-speed movement and flight 318.

Enhancement Magic

Shirou can reinforce others as well as himself.

• Enhances the Magecraft Crests of Rin Tohsaka, Luvia Edelfelt, and Yvette, temporarily strengthening their magical ability 431.
• His reinforcement of Magecraft Crests is regarded as a technique capable of changing modern magecraft 431.
• Receives Divine Era defensive and physical enhancement magic from Lady Avalon 136.

Equipment / Weapons / Items

• Blades of Chaos — Shirou's beloved paired swords and one of his oldest armaments 7 55.
• Aegis — a sword closely tied to his identity as Fae Knight Arthur; once among the strongest weapons in his sword domain 54.
• Avalon — King Arthur's scabbard; Shirou repeatedly gives it to Irisviel or other vulnerable allies instead of retaining it for himself 113 119 286.
• Gauntlet of the Red Dragon Emperor — dragon-crested gauntlet that amplifies Shirou's strength and conceals Ascalon 139 140.
• Mage's Eye Killer — glasses created by Touko Aozaki to suppress magical sight 419 422.
• Black Acolyte robe — bulletproof, anti-blade magecraft attire worn during his work for the Fuyuki Church 405.

Relationships

• Morgan — Fae Kingdom figure whose dream and influence remain with Shirou after his return; he later recognizes Morgan, Lady Avalon, and the Fae Consort as people tied to his past life 1 74.
• Lady Avalon — Shirou's Extra-class Servant, magical adviser, and caretaker. She alters his Command Spells into Dead Count Shapeshifter and remains beside him through Independent Manifestation 26 61 147.
• Hundred-Faced Hassan — Shirou's first Holy Grail War ally. He recognizes Assassin's value, gains the trust of her leader and Loli Hassan, and becomes her new Master after her break with Kirei 30 32 98.
• Irisviel von Einzbern — ally and chosen family. Shirou protects her from the Grail ritual, while Irisviel later chooses to remain in Japan as his self-proclaimed mother 60 100 147.
• Artoria Pendragon / Saber — initially mistaken by Shirou for Morgan, then becomes a trusted ally. Saber respects his judgment and repeatedly acts protectively toward him 36 47 101.
• Shinji and Sakura Matou — Shirou's first friends after his return to Japan. He protects and mentors Shinji, while Sakura comes to regard his home as a refuge 3 10 22.
• Taiga Fujimura — initially an opponent in a debt-settling kendo match, later a member of Shirou's household and social circle 14 148.
• Touko Aozaki — a powerful Magus whose collector mentality conflicts with Shirou's refusal to be owned; the two establish a wager rather than a master-subordinate bond 172.
• Sajyou Manaka — Shirou's Master during the Romanian Holy Grail War. Shirou prioritizes her safety and seeks allies he can trust to protect her if he falls 272 303.
• Justiça Lieselotte von Einzbern — Shirou prevents her dismantling and a new Holy Grail War by making the revived Winter Saintess his Familiar 400 401.
• Rin Tohsaka — former opponent who becomes a trusted ally. Shirou defeats but spares her father, later works alongside Rin against threats surrounding the Greater Grail and the Mage's Eye Collection Train 96 401 419.

Story Role / Major Arcs

• Return from the Fae Kingdom — Returns to Japan as a child carrying the memories, magic, and burdens of Fae Knight Arthur 1.
• Matou and Fujimura period — Builds his first human friendships, helps Satō Kunihiro, and establishes himself as a force feared by both magi and yakuza 3 13 18.
• Fourth Holy Grail War — Forms alliances with Assassin, Saber, and Irisviel; exposes the Tohsaka-Kotomine conspiracy; defeats Gilgamesh; and seeks to halt the corrupted Grail ritual 32 80 101 118.
• Post-war family and Misaki incidents — Remains with the Einzberns, confronts threats in Misaki City, and becomes involved with the Aozaki sisters, Ryougi Shiki, and Araya Souren 147 172 219.
• Romanian Holy Grail War — Operates as Artorius, becomes a key combatant in the Black and Red conflict, opposes Shirou Amakusa's plan, and fights to protect homunculi and allies 273 323 327.
• Clock Tower and Dead Apostle conflict — Investigates the Mage's Eye Collection Train, enhances Rin, Luvia, and Yvette, and battles Nero Chaos before Rita Rozayen traps him through mental interference 419 431 437 438.

Notable Quotes

“Since there's no Heroic Spirit who can defeat him, then I, who am not a Heroic Spirit, will defeat him.” 32

“I can be your companion, Touko, but I can't be your possession.” 172

“Not ‘justice,’ but ‘correctness.’ Shirou simply followed his heart, doing what he believed to be the most correct thing.” 102