Kaguya

Biodata

Feature	Details
Name	Kaguya (辉夜); primarily identified as Shinomiya Kaguya / Kaguya Shionomiya 1 144
Alias(es)	Sixth Beast; Beast of Advancement; Demon Bodhisattva; Clairvoyant Beast; Supreme One; Kaguya Altshul in a reincarnation cycle 157 168 170 172
Species/Race	Human in her Shinomiya identity; revealed as a Skywing aberration in one reincarnation cycle 144 168
Gender	Female
Affiliation	Shinomiya household; allied with and later opposed to Luo Shu across different cycles 144 167 176
Occupation/Role	Holy Grail War participant; mastermind and principal antagonist of the Fifth Holy Grail War; Beast-class calamity 143 158
Status	Alive in the current-world storyline 281 285
First Appearance	Chapter 1 1

Power Progression

Stage / Realm / Level	Chapter	Notes
Magical Circuit completion / Fifth Holy Grail War Master	178	Completes her magical circuit, enters the Fifth Holy Grail War, and summons Saber while seeking to save humanity.
Reincarnation-cycle mental entity	147, 157	Her consciousness has endured 370 million reincarnation cycles; as the Clairvoyant Beast, she is described as seeing past and future.
Complete Sixth Beast / Beast of Advancement	157, 158	Uses the Endless Womb-Vault Barrier and the planet’s principle to complete her Beast metamorphosis, becoming a being beyond ordinary Heroic Spirits.
Planet-dominating pseudo-Star God	157, 161	Restrains Alaya and Gaia, raises worldwide obelisks, and consumes the planet; her Noble Phantasm grants authority over worldwide disasters.
Source-touched Beast	186, 193	Summons the Gate of the Source and an inverted Tree of Life spanning parallel worlds; after touching the Source, she embodies humanity’s possibilities and claims existence beyond causality.

Background / History

Kaguya Shionomiya was adopted by Luo Shu after suffering from multiple personality disorder since childhood. More than thirty-seven personalities were identified within her, including a cold queen, a gentle elder-sister figure, a magician, an archer, and a legendary swordsman. Despite this unusual condition, she was originally considered a mortal without magical aptitude and was once targeted as a Clock Tower research subject. 144

Luo Shu cared for Kaguya after his adoptive mother’s death, allowing her to experience a comparatively normal childhood. Her trauma gradually receded, and she grew into a poised, caring, mischievous young woman who called him “Nii-chan.” 144

Her childhood was marked by her mother’s death and separation from Ashu, whom she regarded as an elder brother. She wanted to protect herself, save humanity, rescue a kidnapped playmate, and someday become a photographer. She later completed her magical circuit and summoned Saber for the Fifth Holy Grail War. 177 178

In an alternate reincarnation cycle, Luo Shu found Kaguya as a Skywing child and raised her among persecuted humans. He taught her compassion and human suffering, but her attachment to humanity hardened into hatred toward other races. After becoming the strongest Skywing warrior and a world ruler, she ultimately turned against humanity’s envoys in pursuit of her greater wish. 167 168

Appearance

Kaguya’s ordinary form is that of a petite, beautiful black-haired young woman. Her presence increasingly becomes cold and oppressive after recovering memories associated with her other selves. 143 205 206

• Ordinary appearance — Black-silk hair, refined bearing, and an initially shy or mischievous demeanor. 144 205
• Mature Beast form — Taller stature, flowing hair ribbons, and a crimson princess dress with a blood-like sheen. 149
• Sixth Beast features — Demonic horns, a vertical third eye, crimson patterns across her body, black wings, and a throne surrounded by blood-red ribbons. 157 172
• Planetary scale — Upon completing her Beast transformation, she can appear as a colossal figure towering above the Moon. 158

Personality

Kaguya combines vulnerability, idealism, and cruelty. As a child, she is timid and deeply affected by abandonment and death; she seeks Ashu for comfort after losing her mother. 144 178 Her stated ideal is to save humanity, an ambition that persists even when it becomes warped by despair and repeated reincarnation. 176 192

Her ordinary self can be caring, playful, and easily embarrassed by the actions of her parallel counterparts. She is notably protective of Hayasaka and later takes two displaced girls into the Shinomiya residence. 148 205 281 When synchronized with Luo Shu, her frightening aura fades enough for a more innocent, jealous, girlish side to emerge. 285

As the Beast of Advancement, Kaguya is aloof, confident, and contemptuous of resistance. She views humanity as driven by endless desire and believes forced evolution, control, and reincarnation are forms of salvation. 157 158 190 Nevertheless, her attachment to Luo Shu and the life they shared remains emotionally significant, even when she resolves to oppose him. 168 192

Abilities & Skills

Multiple Personalities

Kaguya’s childhood condition manifested more than thirty-seven distinct personalities, several possessing specialized talents. 144

• Personalities include a magician, master archer, legendary swordsman, cold queen, gentle elder sister, and lively child. 144
• Her personality shifts appear to have diminished during her ordinary childhood before resurfacing alongside her memories and power. 144
• Her early lack of magical aptitude contrasts with the immense magical power she later displays. 144 178

Reincarnation Wheel and Mind Corridor

Kaguya’s mind has passed through 370 million reincarnation cycles, creating an immense mental world that she uses against Luo Shu. 147 157 165

• Her Clairvoyant Beast state is described as perceiving past and future. 157
• She drags Luo Shu into her Mind Corridor, a desolate Reality Marble connected to her reincarnation wheel. 165
• She can construct new cycles and dispatch fragments of her power into them to challenge Luo Shu. 166
• Her repeated loops have refined her resolve over what she describes as six billion years. 176

Beast Authority and Planetary Dominion

After completing her transformation into the Sixth Beast, Kaguya becomes the Beast of Advancement, a calamity exceeding ordinary Heroic Spirits and gods. 157 161

• Her Absolute Desire of This World Noble Phantasm replaces planetary consciousness through the Ten-Thousand-Phenomena Celestial Net. 157
• She can create earthquakes, volcanoes, torrential rain, storms, and other global catastrophes at will. 157
• She restrains both Alaya and Gaia, limiting the planet’s and humanity’s collective defenses against her. 161
• She claims that the concept of death has been removed from her completed Beast form. 158
• Her emergence triggers intervention by the Suppression Force and Heroic Spirits specifically suited to fight Beasts. 160

Source and Causality Transcendence

Kaguya seeks the Source rather than an ordinary magician’s wish. 186

• She summons the Gate of the Source, manifesting an inverted Tree of Life that links symbols across billions of parallel worlds. 186
• After touching the Source, she becomes an embodiment of humanity’s total potential, with countless heroic and pioneering silhouettes overlapping her form. 193
• She states that her existence spans past and future, that her origin forms its own cycle, and that altering her past cannot erase her. 193 195
• Her Source-touched state is described as possessing intellect capable of encompassing humanity’s possibilities. 195

Combat and Summoning

Kaguya commands exceptional magical reserves, spear technique, and Servant-level combat power. 143 176

• She commands Black Saber to attack Yukino, Medusa, and Luo Shu’s group. 143
• She summons a cursed-sword queen and a jet-black giant to fight Gilgamesh. 147
• She creates spears from void, including black-lightning and annihilation-infused weapons. 176 205 206
• Her light cannons can devastate ancient mountain ranges, though Luo Shu’s spiritual ascension lets him evade their effects. 170
• She defeats Rama despite his Titan transformation and star-shaking attacks. 190
• Her ancient power can destroy her own body after prolonged supreme-level combat. 176

Weapons and Constructs

• Spear — Her primary manifested weapon; she creates and wields spears through vast magical power, black lightning, or void-based construction. 176 205 206
• Absolute Desire of This World — Star-targeting Noble Phantasm that grants planetary disaster authority through the Ten-Thousand-Phenomena Celestial Net. 157
• Endless Womb-Vault Barrier – Ten-Nine Corridor — A celestial-scale ritual used during her Beast metamorphosis. 157
• Unleaked Womb Archive Corridor — A mental corridor associated with her reincarnation-cycle existence. 157
• Gate of the Source / Inverted Tree of Life — Source-reaching construct that connects worlds through a parallel-world chain reaction. 186
• Black Saber — Servant commanded by Kaguya during the Fifth Holy Grail War. 143

Relationships

• Luo Shu — Adoptive elder brother whom Kaguya calls “Nii-chan”; her protector, closest emotional attachment, ideological opponent, and recurring final adversary across reincarnation cycles. 144 167 176 192
• Ai Hayasaka — Maid, confidante, and one of Kaguya’s closest current-world companions. Kaguya frees Hayasaka and her mother from the Shinomiya household’s control. 143 205 281
• Yukino Yukinoshita — Once a close friend who trained alongside Kaguya and Luo Shu; their relationship collapses when Kaguya is revealed as the Holy Grail War’s mastermind. 84 142 143
• Saber / Black Saber — Kaguya summons Saber after entering the Fifth Holy Grail War and later commands Black Saber against her enemies. 178 143
• Yōna — Kaguya’s older sister, who cared for and played with her during childhood. 177
• Ashu — A youth Kaguya considers an elder brother; his absence after her mother’s death leaves her devastated. 178
• Rama — Opponent who rejects Kaguya’s vision of salvation through domination; Kaguya defeats her in battle. 190
• Chika Fujiwara — A friend who remains physically affectionate and largely unafraid of Kaguya’s intimidating aura. 287

Story Role / Major Arcs

Fifth Holy Grail War Mastermind

Kaguya is revealed as the architect behind the Holy Grail War and emerges from the Black Holy Grail to confront Luo Shu. She declares that she wants the Holy Grail, then orders Black Saber to kill Luo Shu’s group. 142 143

Ascension into the Sixth Beast

After revealing her true nature, Kaguya completes a ritual that transforms her into the Sixth Beast. She seeks to rewrite reality, rule the world, and force humanity onward through disaster and reincarnation. 150 157 165

War Against Humanity and the Heroic Spirits

Kaguya withstands coordinated Noble Phantasms from Heroic Spirits including Ramesses II, Karna, and Siegfried. She later binds Alaya and Gaia, manifests global obelisks, and consumes the planet. 160 161

Battle with Luo Shu

Kaguya battles Luo Shu on a planetary and mental scale. When physical attacks prove futile, Luo Shu cuts his own consciousness and enters her reincarnation wheel, forcing a conflict across countless lives and worlds. 165 166

Reincarnation-Cycle Conflicts

Different cycles depict Kaguya as a Skywing ruler, an Eternal King, an Ootsutsuki God, and other godlike forms. Though she repeatedly pursues an absolute ideal, Luo Shu consistently becomes the obstacle she cannot fully overcome. 167 170 173 174

Current-World Reawakening

After recovering memories connected to her alternate lives, Kaguya’s power and demeanor frighten her family, school, and supernatural factions. She nevertheless uses her changed position to free Hayasaka and her mother, and later shelters two vulnerable girls from other worlds. 205 206 281

Notable Quotes

“I just want the Holy Grail.” 143

“Humans are beasts!” 190

“Denying me is denying the very possibility of humanity itself.” 193

“In the end, I still won, brother.” 176

Trivia

• Kaguya repeatedly dreams of a mature version of herself being beheaded by Yukino, with the vision resetting afterward. 204
• Her childhood ambition included becoming a photographer. 177 178
• She is embarrassed by the villainous reputation created by her parallel-world counterparts. 148 174
• Despite her fearsome reputation, she and Yukino take two foreign girls to the Shinomiya residence rather than leave them unprotected. 281