Yu Feng

Biodata

Feature	Details
Name	Yu Feng (羽枫)
Alias(es)	Kaede Ryougi; Pantaleon; Xuanyuan Xi; Ai Lian
Species/Race	Human; described as a “living Servant” 200
Gender	Male 43
Affiliation	Clock Tower; Lord El-Melloi II’s circle; allied with Chaldea in several Singularities 191 110 118
Occupation/Role	Mage; Heroic Spirit Life Simulation System user; combatant and contract-holder for Servants
Status	Active 478
First Appearance	Chapter 1

Background / History

Yu Feng's life is repeatedly altered by the Heroic Spirit Life Simulation System, which lets him select talents and live simulated Heroic Spirit lives. He can inherit part of a simulated self's abilities afterward. His first documented selections include the Gold-tier Sword Heart Clarity, Chivalric Spirit, Magecraft Talent, Dragon Bloodline, and Yin-Yang Reversal as available options. 1

One simulation places him in ancient China as Xuanyuan Xi, an extraordinary child discovered by the Yellow Emperor Xuanyuan and raised in Huoyun Palace by the Three Sages of Humanity: Xuanyuan, Fuxi, and the Yan Emperor. At sixteen, Xuanyuan Xi leaves to face his tribulation, witnesses the Yin Dynasty's oppression, and resolves to support Ji Chang of Xi Qi. 32

In another simulation, Yu Feng is born in the Underworld with life and death intertwined in his aura. Ereshkigal adopts him and names him Ai Lian. 82 As Kaede Ryougi, he is adopted by the Ryougi Family and later returns to Kanbuchi, where Shiki Ryougi tells him she knows of his unusual circumstances. 148 181

His many simulated identities eventually manifest as separate, identical-looking individuals—including Pantaleon, Ai Lian, and Kaede Ryougi—during the Qin Singularity. 300

Servant Profile

Pantaleon/Xuanyuan Xi's documented Servant profile is as follows:

Attribute	Lancer	Caster
Strength	B+	B
Endurance	B	C++
Agility	B	B
Mana	B	A++
Luck	D	D

Profile documented for Xuanyuan Xi/Pantaleon. 43

Appearance

Yu Feng shares the facial features and eyes of Kaede Ryougi, differing notably in hair color. 78

• His irises can shift from gold to deep blue when using his Mystic Eyes. 194
• He can manifest the appearance and armament of several simulated identities. 114 300
• During the Uruk-era conflict, his mask is destroyed and his true face is revealed. 84

Personality

Yu Feng is blunt, sarcastic, and often provokes those around him with casual remarks. He readily argues with Rin Tohsaka, teases Lainis about her childhood nickname, and does not hesitate to mock opponents in battle. 1 192 135

Despite this irreverence, he consistently acts to protect others. He comforts Sakura over her fear of being sent to the Matou family, offers Kariya a means to preserve his life, gives Gray a protective rune stone, and repeatedly enters dangerous situations alone to shield his allies. 106 187 134 195

His confidence can become dangerous when his strength returns. During the Monster Tide, he becomes unusually arrogant and bloodthirsty while slaughtering Magic Beasts, afterward retaining only hazy memories of the rampage. 135 He nevertheless remains cautious when his mana is limited or when facing enemies beyond his current power, preferring withdrawal, preparation, and alliance-building to reckless defeat. 68 294 370

Abilities & Skills

Heroic Spirit Life Simulation System

Yu Feng can enter simulations, choose talents, live alternate lives, and receive part of a simulated self's abilities afterward. 1

• Selectable talents are ranked from White to Red. 1
• Simulated identities include Xuanyuan Xi, Ai Lian, Kaede Ryougi, and Qin Zi Xi. 32 82 148 266
• His identities can become divided or independently manifested, severely reducing his available strength. 292 294 300
• He can regain lost power as the conditions affecting those identities change. 133 256

Swordsmanship and Spear Combat

The Gold-tier talent Sword Heart Clarity grants Yu Feng exceptional comprehension of swordsmanship. 1

• Fights with both the Sword of the Pure Knight and Flash of Brilliance during large-scale engagements. 135
• Defeated Lancelot in a duel, compelling him to withdraw. 78
• Uses Intuition to read and counter an opponent's movements, eventually turning the tide against Hephaestion. 190 206
• Can eliminate large groups of spiritual enemies with high-speed spear attacks. 447

Thought Key Pattern and Eastern Daoist Arts

As Xuanyuan Xi/Pantaleon, Yu Feng possesses Thought Key Pattern: EX, the foundation of his Eastern Magecraft. It enables the use of Immortal Arts and Daoist techniques distinct from Western Magecraft. 190

• Can use low-level Eastern Daoist arts without hand seals and resist them to a degree. 43 190
• Higher-level arts still require hand seals and cannot be fully resisted. 43
• Uses Daoist bindings, lightning, teleportation, and large-area attacks. 374 381
• Casts Samadhi True Fire by converting mana into wide-area true fire; the technique consumes roughly one-fifth of his magical energy. 478

Rune Magic

Yu Feng is an accomplished Rune Magic user whose work has drawn Clock Tower attention.

• Replicated Rune Magic and attempted to restore Primordial Runes, earning recognition as a Pride Magus. 188
• Uses rune stones as spell media; destroying the medium greatly weakens rune-based Magecraft. 193
• Can immobilize multiple Electric Rabbits with the rune inguz. 193
• Uses offensive runes alongside the Fuxi Spear to destroy regenerating enemies. 389

Mystic Eyes

Yu Feng possesses Mystic Eyes associated with Chrono-Observation and temporal perception. 148

• His blue-eyed state allows him to perceive hidden paths and glimpses of the future. 194
• His predictive ability lets him anticipate attacks in close combat. 206
• He repairs Kayneth's damaged condition through an apparent reversal of the latter's bodily time. 202
• His left eye disrupts the seven-colored gate sustaining the Wild Hunt. 195

Magical Energy and Xuanyuan Xi's Golden Magecraft

Xuanyuan Xi's power grants exceptional talent, knowledge of Magecraft and Taoist arts, and a self-sustaining magical-energy supply. 337

• Absorbs and converts external natural energy into Yu Feng's own mana. 337
• Produces golden magical energy comparable to the Great Source of the Age of Gods. 337
• Can surpass the Holy Grail's practical mana supply through continual conversion, though not through equivalent storage capacity. 337
• Yu Feng remains vulnerable when his mana is depleted, suppressed, or rendered unusable by hostile environments. 68 340 418

Independent Action

Yu Feng can remain active at a distance from his Master after being summoned as a Servant. 73

• Allows him to travel separately from Kiritsugu Emiya during the Fourth Holy Grail War. 73
• Lets him operate as an independent combatant despite his Servant status. 200 240

Noble Phantasms and Equipment

• Sword of the Pure Knight — A silver-white sword of purity that repels Black Mud, clashes with Inverted Excalibur, absorbs mana from enemies it strikes, and can open spatial gateways. 68 96 239
• Fuxi Spear — A spear forged by Fuxi and bestowed upon Xuanyuan Xi; it contains a trace of Fuxi's origin power. 43
  • Its Noble Phantasm invocation declares the continuing prosperity and beginning of humanity's era. 469
• Flash of Brilliance — A summonable spear used alongside the Sword of the Pure Knight; it returns to Yu Feng after being thrown. 135
• Knight's Judgment Bow — A mana-intensive bow used to fire devastating silver-white arrows; the Holy Grail allowed Yu Feng to wield it without exhausting his own reserves. 135
• Kuji Kanesada — A sword acquired through his Ryougi simulation and used when Yu Feng chooses close combat over Magecraft. 193
• Rune Stones — Spell media used for Rune Magic, enhancement, acceleration, restraint, and protection. 193 195 187
• Holy Grail — Temporarily served as an immense mana source during the Camelot Monster Tide. 134 135

Relationships

• Rin Tohsaka — Longtime companion whose bickering relationship with Yu Feng gradually becomes openly affectionate; she is deeply relieved when he returns after nearly half a year away. 1 145 442
• Shiki Ryougi / Ryougi Ori — Kaede Ryougi's sister and her alternate personality. Shiki claims to know Yu Feng's circumstances, while Ori hints at knowledge of his Origin without revealing it. 181
• Waver Velvet / Lord El-Melloi II — Former Holy Grail War acquaintance and Clock Tower associate. Waver trusts Yu Feng's combat ability but remains wary of his shifting identities and concealed history. 186 196 201
• Gray — Waver's apprentice. Yu Feng gives her a protective rune stone and assists her during the Mystic Eye Train incident. 187 201
• Scathach — Yu Feng calls her “Master” after his spear techniques attract her attention. She eventually forms a temporary contract with him, conditional on him later visiting the Shadow Land. 138 292 293
• Artoria Pendragon Lily — Fought alongside Yu Feng during the Fourth Holy Grail War and is distressed by his abrupt disappearance. Yu Feng later seeks the Greater Holy Grail to bring Saber back from the Throne. 107 240
• Gilgamesh — A recurring rival. Yu Feng battles him in multiple eras, while Gilgamesh alternates between hostility, curiosity, and reluctant concern. 46 84 370
• Qin Zheng — Yu Feng's former student through the Qin Zi Xi simulation. Qin Zheng continues to address him as “Mister” despite knowing he is not precisely the same person. 266 321 349
• Sajo Aige — A mysterious woman Yu Feng recognizes subconsciously but cannot fully remember. She is intensely attached to him and possesses self-limited omniscience and omnipotence. 354 355

Story Role / Major Arcs

Fuyuki and the Holy Grail Wars

• Activates the Heroic Spirit Life Simulation System while living in Fuyuki with Rin Tohsaka. 1
• Participates in Holy Grail War conflicts as Pantaleon, fights Gilgamesh, protects Artoria Lily and others, and forms a Self-Enforcement Contract with Kayneth. 46 68 78
• Helps Sakura understand her parents' decision regarding her adoption and provides Kariya with the Sword of the Pure Knight to suppress his Crest Worms. 106
• Is forcibly teleported away by Merlin, leaving Irisviel and Lily behind. 107

Camelot Singularity

• Arrives in the Fuyuki Singularity and reunites with Ritsuka Fujimaru and Mash Kyrielight while noticeably weakened. 110
• Learns of the alternate history in which Pantaleon joined the Knights of the Round Table, founded the White Knights, and later left after the battle against Vortigern. 112
• Offers the Knights of the Round Table assistance against the Fantasy Tree. 118
• Regains some strength after Pantaleon Alter disappears, then uses the Holy Grail's mana to hold back and disperse a Monster Tide. 133 134 135

Clock Tower and Mystic Eye Train

• Returns to Fuyuki after an extended absence and later resumes contact with the Clock Tower as a Pride-class mage. 145 191
• Travels to Kanbuchi and reunites with Shiki Ryougi. 181
• Assists Waver, Lainis, and Gray in investigations involving the Codrington estate, the Wild Hunt, Dead Apostles, and the Mystic Eye Train. 194 195 200
• Battles Hephaestion and helps expose Heartless's use of the Child of Fuyuki Forest. 206

Apocrypha Timeline and Chaldea

• Meets Marisbury Animusphere, opens a gateway with the Sword of the Pure Knight, and encounters the Enlightened One, who gives him the Seed of the World. 239 240
• Arrives in the Fate/Apocrypha timeline with Rin, becomes a Black Faction Ruler, and seeks the Greater Holy Grail to restore Saber. 240
• Returns to the Fuyuki Singularity stronger than before and destroys Berserker after twelve attempts. 259
• Continues operating alongside Chaldea through later Singularities as a Master-level combatant capable of forming contracts with Servants. 390

Qin Singularity and the Divided Selves

• Enters a Qin-era simulation as Qin Zi Xi, becomes Qin Zheng's tutor, and helps guide the rise and unification of Qin. 266
• Later confronts the Qin Singularity's Qin Zi Xi, a derivative self whose actions devastate the land and distort its history. 294 337
• Gathers Scathach, Chen Gong, Arash, and Fang Jun Li as allies before traveling to Xianyang. 293 294
• Faces Xuanyuan Xi's golden power against Qin Zi Xi, but Qin Zi Xi halts the Fuxi Spear through simultaneous space-time manipulation. 337 338
• Helps establish a barrier in Xianyang that converts and amplifies magical energy, which he considers an early form of an Inherent Domain. 363

Later Singularities

• Learns that he has become the ruler of an incomplete world that requires vitality to be made whole. 380
• Fights through Orléans while conserving mana in an environment that erodes magical energy. 416
• Travels with Chaldea through the island and Redwood Forest incidents, using combat skill, Daoist arts, and the Fuxi Spear against phantasmal threats. 457 469 477 478

Notable Quotes

“Weak, weak, too weak.” 135

“The human myths passed down through the ages will never fade. With this! The era of man is proven... and begins now!” 469

Trivia

• Yu Feng considers himself a member of the “Merlin Must Die Alliance” alongside Fufuu. 447
• He habitually drinks heavily sweetened coffee, adding several sugar cubes before finding it satisfactory. 196
• He insists that others call him Yu Feng rather than Ryougi. 189