Sakutsuki

Biodata

Feature	Details
Name	Sakutsuki (朔月)
Alias(es)	Sakuta; Avenger; Assassin; Priest; Knight of the Round Table
Gender	Male
Affiliation	Fates Codex; Knight of the Round Table; various temporary Holy Grail War alliances
Occupation/Role	Magus, combatant, strategist, Master, Servant vessel
First Appearance	Chapter 2

Power Progression

Stage / Realm / Level	Chapter	Notes
Displacement Magic acquired	2	Received from the Fates Codex after escaping Einzbern Castle; used for evasion, guerrilla warfare, and spatial movement. 2
Replacement Magic: Modified	6	Gains Einsworth replacement-magecraft knowledge comparable to Darius's, including conceptual applications. 6
Agility increased from D to C	8	Restored through a Codex reward; also receives modern-firearms projection data and a Kawasaki Ninja H2R. 8
Void, Water, and Insect Magecraft knowledge	12	Earned by completing the records for rescuing Sakura and permanently killing Zouken. 12
Third Magic fragments comprehended	14	Begins grasping Soul Materialization and its principle of immortal souls sustained by emotion. 14
Imaginary Numbers Magic authority	17	Obtains permission to use Imaginary Numbers Magic. 17
Third Magic: Soul Materialization	40	Uses it to temporarily suppress the multiple personalities of a Hundred Personas Servant. 40
Martial Arts Refinement	82	Acquired after defeating Lancelot. 82
Jail Scythe, Dust Saw — full projection authority	85	Reward for defeating Gilgamesh without close combat; strengthens his projected armaments and Broken Phantasms. 85
Dragon's Heart and Tuning	117	Consumes a Dragon's Heart, gains dragon-like regeneration, and develops Tuning magecraft. 117 122
Ability Extractor	128	Gains an item capable of extracting skills or Noble Phantasms from defeated Servants; intends to use it to improve Sword in the Stone. 128
Beast Metamorphosis: EX	193	Obtains the ability to remain sane while transformed into a Beast. 193
Beast Metamorphosis·Messiah: EX	378	Beast Metamorphosis evolves following the Hunting Game. 378
King Hassan's legacy	398	Accepts King Hassan's bone-white mask and the responsibility associated with the past Hassans. 398

Background / History

Sakutsuki escaped Einzbern Castle after obtaining Displacement Magic from the Fates Codex. He spent seven days evading Angelica through harassment and prepared magical arrays that ultimately redirected gathered mana toward Einzbern Castle after Angelica believed him dead. 2 4

He later infiltrated Winter's Castle to test his modified replacement magecraft against its defenses. There he met Illyasviel von Einzbern, whom his body recognized as Kiritsugu Emiya's daughter and his adopted sister despite their different worldlines. 6

In Fuyuki, Sakutsuki rescued Sakura Matou, fought Zouken alongside Kariya Matou, and supplied Kariya with magical knowledge after Zouken's permanent death. He subsequently prepared for the Holy Grail War with Kariya while protecting Sakura. 11 12 13 17

During the war, he accumulated Servants, Class Cards, Noble Phantasms, and magical rewards through the Fates Codex. His actions included becoming a Knight of the Round Table under Artoria, defeating Gilgamesh, faking his death with Kiritsugu's assistance, and eventually making a wish to the Greater Grail for a body. 78 85 110

Sakutsuki later traveled between multiple worlds and Singularities. He acted as a military commander in a Roman conflict, intervened in magical-girl incidents, participated in the Apocrypha and Mooncell Holy Grail Wars, inherited aspects of King Hassan's role, and became involved in Uruk's struggle against the demonic-beast threat. 125 137 221 398 413

Appearance

Sakutsuki is generally depicted as a white-haired youth with golden or golden-red eyes. Following his Greater Grail wish and the effects of the Third Magic, his body becomes childlike and his appearance changes into a higher-order vessel shaped by future possibilities. 83 110 111 125

• White hair, sometimes described as luminous under moonlight. 83 104
• Golden eyes; in his Pseudo-Servant state, they appear golden-red. 83 125
• Uses a bone-white mask inherited from King Hassan when acting in an Assassin-like capacity. 398
• Has appeared in disguises including a priest's attire. 145

Personality

Sakutsuki is highly strategic, treating battles as problems of preparation, positioning, information, and asymmetric advantage. He favors ambushes, mobility, traps, and exploiting an opponent's known weaknesses over direct contests of strength. 2 38 223

He is capable of blunt ruthlessness, particularly in war. As a commander, he accepts casualties and uses subordinates as strategic pieces when he considers the objective necessary. 137 317 However, this severity coexists with a protective side: he repeatedly safeguards Sakura, Miyu, Illya, civilians, and soldiers caught in disasters. 12 80 131 413 417

Sakutsuki often uses food, teasing, or calculated charm to disarm others. He cooks for companions and strangers alike, while his conduct toward Ereshkigal alternates between provocation, empathy, and flirtation. 32 122 409 420

Abilities & Skills

Fates Codex

A cheat-like system that records conditions tied to people and events, then grants Sakutsuki rewards for completing them.

• Awarded Displacement Magic after his escape from Einzbern Castle. 2
• Grants magical knowledge, parameters, weapons, Class Cards, and skill authorities. 8 12 85
• Can activate or interact with special objects, including the doll later identified as Kato Danzo. 122
• Unlocks travel opportunities to other worlds, including the Mooncell Holy Grail War. 111

Displacement Magic

Sakutsuki's primary spatial magecraft, used both tactically and for interworld travel.

• Enables rapid repositioning, escapes, infiltration, and long-range mobility. 2 38
• Lets him create blue, diamond-shaped spatial passages. 128 421
• Allows him to return to Fuyuki through a displacement tunnel and later tear through space without Codex assistance. 186 216
• Its use is central to his guerrilla tactics against stronger opponents. 2 3

Projection and Reinforcement Magecraft

Sakutsuki can materialize weapons and reinforce himself for combat.

• Projects blades, including Gan Jiang and Mo Ye. 10 11
• Possesses modern-firearms projection data. 8
• Gains full projection authority for Jail Scythe, Dust Saw. 85
• Uses projected armaments and Broken Phantasms against Servants. 85

Imaginary Numbers Magic

A high-level magic used for concealment, interference, defense, and the manipulation of imaginary spaces.

• Countered Angelica's and Gilgamesh's Noble Phantasm attacks. 3 84
• Can establish an imaginary domain and create a temporary “dual existence.” 117
• Supports battlefield disruption and spatial containment. 38 117

Third Magic: Soul Materialization

Sakutsuki's developing application of the Third Magic, centered on immortal souls and perfected bodies.

• Temporarily suppresses the personalities of Hundred Personas. 40
• Causes his soul and flesh to gradually merge, altering his vessel and appearance. 111
• Allowed him to make a Greater Grail wish for a body. 110
• Is recognized by Twice, who calls him a “third magic user.” 401

Tuning / Attunement

Magecraft based on resonance, sound, and magical interference.

• Developed after consuming the Dragon's Heart. 117
• Uses a dragon-blood-infused piano to gather information and interfere with enemies. 117
• Creates a barrier through Grand Magecraft: Attunement to protect surviving soldiers. 414
• Improved from Rank B to B+ after a Codex record update. 209

Martial Arts and Weapon Skills

Sakutsuki combines magecraft with close-quarters combat, archery, firearms, and Heroic Spirit techniques.

• Uses spear techniques, archery, Bajiquan, Inch Punch, and firearms. 81 84 119 246
• Earns Martial Arts Refinement after defeating Lancelot. 82
• Integrates Mystic Eyes with martial arts after defeating King Hassan. 171
• Uses Rose Lance alongside Bajiquan against multiple Servants. 388

Beast Metamorphosis

A transformation ability originating from Pandora's Box.

• Retains Sakutsuki's sanity during Beast transformation. 193
• Later evolves into Beast Metamorphosis·Messiah: EX. 378

Equipment / Weapons / Items

• Kawasaki Ninja H2R / Sword in the Stone — motorcycle whose True Name activates a Noble Phantasm allowing theoretically unlimited acceleration. 8 81
• Origin Bullet — Kiritsugu Emiya's conceptual ammunition; Sakutsuki provides one to Kariya, resulting in Zouken's death. 12
• Gan Jiang and Mo Ye — paired projected blades used against Zouken. 11
• Jail Scythe, Dust Saw — divine constructs for which Sakutsuki gains full projection authority. 85
• Bone-white mask — mask received from King Hassan, associated with the legacy of the Old Men of the Mountain. 398
• Class Cards — used for installation and to access Servant abilities; Sakutsuki collects cards from defeated enemies. 128 134 145
• Ability Extractor — Codex reward able to extract skills or Noble Phantasms from defeated Servants. 128

Relationships

• Miyu — Sakutsuki's sister figure and a central person he protects; he seeks her rescue across worlds and promises not to hold back for her sake. 17 85 204
• Sakura Matou — rescued from the Matou family; Sakutsuki treats her with affection and prioritizes her safety. 11 12 13
• Kariya Matou — initially an uneasy ally; Sakutsuki teaches him magic so that he can protect Sakura. 11 12 17
• Illyasviel von Einzbern — recognized by Sakutsuki's body as an adopted sister; later one of the girls under his protection. 6 204
• Artoria Pendragon — knights Sakutsuki as a Knight of the Round Table; their later conflicts involve Class Cards and Command Spells. 78 145 317
• Angelica Einzbern — early pursuer and recurring opponent; Sakutsuki repeatedly counters her Hero King-derived power. 2 3 186
• Gilgamesh — rival Archer whom Sakutsuki defeats without close combat after countering an incomplete Enuma Elish. 83 85
• Kato Danzo — doll/ninja activated by Sakutsuki, who establishes base commands for her loyalty. 122
• King Hassan — tests and acknowledges Sakutsuki; passes on his mask and a burden connected to the Hassans. 171 398
• Ereshkigal — initially hostile captor who becomes emotionally attached to Sakutsuki after his empathy, teasing, and gifts of flowers. 409 413 420
• Nero Claudius — summons Sakutsuki in a Singularity and wants him to remain as a military asset. 124 125

Story Role / Major Arcs

Escape from Einzbern Castle

Sakutsuki escapes the castle, gains Displacement Magic, evades Angelica for seven days, and turns the pursuit into an attack on Einzbern Castle itself. 2 4

Fuyuki and the Fourth Holy Grail War

He rescues Sakura, kills Zouken, allies with Kariya, protects Miyu, becomes a Knight of the Round Table, and defeats several Servants—including Gilgamesh—while manipulating the war's information network through his staged death. 11 12 78 85

Post-War Travel and Magical-Girl Incidents

After wishing for a body, Sakutsuki explores other worlds, consumes the Dragon's Heart, confronts Touko and Araya, activates Kato Danzo, and gathers Class Cards and abilities. 110 117 119 122 128

Military Commander and Singularity Traveler

While inhabiting a Pseudo-Servant vessel, Sakutsuki commands armies through the powers of an unknown Huaxia Spirit Origin. He employs ambushes, scorched supplies, and calculated sacrifices to secure victory. 125 137 138

Assassin and Holy Grail War Combatant

Sakutsuki descends as an Assassin in Romania, commands Mage's Association magi, uses Presence Concealment and foreknowledge to cripple Vlad III, and later clashes with the Black Faction. 221 223 277

Uruk and the Netherworld

Sakutsuki challenges Ereshkigal, saves Eshnunna soldiers, assists against demonic beasts, infiltrates hostile territory, rescues victims from Gorgon's temple, and helps plan Uruk's defenses. 409 413 414 417 420

Trivia

• Sakutsuki frequently uses cooking as both a genuine kindness and a tactical tool. 32 40 122
• He refers to Sword in the Stone as his motorcycle's True Name. 81
• He is described as a replica of his brother's records and initially claims not to possess real emotions. 110
• Sakutsuki's body recognizes emotions and familial bonds that do not fully originate from his own memories. 6