Yuya

Biodata

Feature	Value
Name	Ōtsutsuki Yuya (羽夜); named by Kaguya after a drifting feather 4.
Alias(es)	Su Ye; Divine Child; Divine Son; Crown Prince; “Ye’er,” used by Kaguya 10 13 35 42.
Gender	Male 7 10.
Age	Arrives as an infant; three during his Sharingan awakening, five upon reaching the Ōtsutsuki second tier, and eight during his reunion with Kaguya 3 7 8 10 15.
Affiliation	Kaguya Ōtsutsuki; Land of Ancestors; Starlight Pavilion; Sky Feather Pavilion 4 10 13.
Occupation/Role	Protagonist; governor and crown prince of the Land of Ancestors; leader of both pavilions; musician under the name Su Ye 10 13.
Status	Alive; has fragmented the collapsing Wind-Snow Realm and regained the ability to sense the main world 50.
First Appearance	Appears as Su Ye before receiving the name Yuya 3 4.

Power Progression

Stage / Realm / Level	Chapter	Notes
Initial physique enhancement	4	Accepting Kaguya’s name grants Physique +1. Their bond also unlocks affection monitoring and special rewards.
Initial water affinity	6	Absorbs a trace of water-aspected natural energy, gaining improved recovery, greater agility in water, and a hidden Physique +0.1.
Water Drop Splash, level 1	6	Interrupting a samurai with a tiny water stream unlocks the technique, raises water-affinity mastery to 10%, and grants Spirit +1.
Superhuman physical foundation	7	Three years of Kaguya’s training and system boosts allow him to shatter a granite boulder with one punch, despite poor energy control.
One-tomoe Sharingan	7	Awakens through meditation and resonance between his inner energy and water. Its initial instability and spiritual drain cause him to collapse.
Ōtsutsuki second tier	8	At five, combines enhanced perception, strength, speed, and elementary water and fire manipulation. Kaguya places him at the second of nine Ōtsutsuki tiers; he estimates himself at Jonin level.
Taijutsu enhancement	10 11	A quest completed while comforting Qingyi grants a Taijutsu increase, improving his combat instincts.
Three-tomoe Sharingan; Ōtsutsuki third tier	15	Displays three tomoe during his spar with Kaguya. She judges his abilities well beyond ordinary Jonin and firmly within the clan’s third tier.
Source Fruit enhancement; Prophecy and Time	15	Kaguya’s fruit repeatedly increases his chakra and grants two ocular abilities. His eyes briefly become a unique Mangekyō before reverting; his young body cannot sustain the future vision.
Gale Sword Technique, B-rank	15	A Swordsmanship +1 reward brings his accumulated sword knowledge together into an original technique.
Comprehension increase; Izanagi	16	Accepting the national contest grants a comprehension point, reduces ocular-technique costs, and automatically teaches Izanagi.
Gale Sword Technique epiphany	17	Performing the technique in reality produces fresh insight into its movements.
Chakra and vitality infusion	18	Kaguya transfers energy for a day and night, increasing his life and chakra while nourishing his physique.
Expanded bond rewards	18	Kaguya’s affection reaches 99. The system lists Enlightenment, Heavenly Secrets Calculation, and Reincarnation among his rewards and grants access to her status.
Chakra-control breakthrough	21	Successfully climbs a tree on his third attempt after adjusting the excessive chakra that initially damages its trunk.
Rasengan and Big Ball Rasengan	22	Uses balloons and a rubber ball to understand controlled chakra rotation; forms both versions almost immediately and learns to disperse them safely.
Gale Sword Technique, A-rank	22	Intensive body-control training grants Taijutsu +10 and advances his original sword technique.
Observation Haki	23	Receives it for his public declaration that he likes men, gaining another means of sensing living beings and anticipating attacks.
Sage Body	23 24	Provoking Kaguya earns the constitution; its completed transformation adds 100 each to maximum health, maximum chakra, physical potential, physique, and recovery, plus a large ninjutsu-power bonus.
Wind Release: Rasenshuriken, S-rank	24	Independently masters the technique, then reshapes its wind chakra into other weapons.
Sustained Wind Release flight	25	Demonstrates flight through precise, continuous wind-chakra control.
Shadow Clone and Multiple Shadow Clone Techniques	26	Derives the B-rank and A-rank techniques from a reward containing the Three Basic Techniques. Clone training accelerates his acquisition of Chidori, Chidori Stream, and other elemental jutsu.
Mount Myōboku Sage Mode	33	Natural-energy meditation unlocks a mode with 50-fold perception and tenfold increases to health, strength, speed, recovery, and ninjutsu power.
Enhanced Sage Mode	33	Develops a more complete form drawing on the three great Sage traditions. Perception and all attributes rise to 100 times normal; rapid senjutsu replenishment makes indefinite use seem possible to him.
Wood, Ice, Lava, and Boil Releases	33	His understanding of natural energy makes the fusion of different chakra natures instinctive, awakening four kekkei genkai.
Instant, SS-rank	39	Reworks Flying Thunder God into an original space-time technique compatible with his constitution.
Tsukuyomi and understanding of Susanoo	41	Winning the ranking tournament grants Tsukuyomi; the resulting genjutsu improvement and insight let him comprehend Susanoo.
Susanoo, third form	42	Uses an armored Susanoo while his eyes still display three tomoe, strengthening it with Sage Mode to deflect Kaguya’s Truth-Seeking Orb.
Mangekyō Sharingan awakening	43	After suppressing Isshiki, accepts a sword wound from the disoriented Kaguya. Physical suffering and accumulated grief transform his tomoe into black six-pointed stars.
Six-tomoe Rinne Sharingan; Six Paths Mode	45	The system rewards his departure with the Rinnegan, restoring his blind left eye. His powers merge into six-tomoe eyes, a golden sage cloak, and twelve Truth-Seeking Orbs, bringing him to true Six Paths level.
Advanced combat integration	49	Prolonged fighting against Seimei’s shikigami sharpens his combat instincts and mastery of Susanoo forms, Amaterasu combinations, and timed ocular attacks.

Background / History

Arrival and Adoption

Su Ye arrives in the Naruto world as an infant shortly after Kaguya’s apparent victory over Isshiki. Unable to explain himself, he faces execution as an unpredictable threat. He follows a system option to reach toward Kaguya with a trusting smile; she abandons the attack, embraces him, and promises to protect him 3.

Kaguya names him Ōtsutsuki Yuya and keeps him by her side. Retaining knowledge of Naruto’s future, he initially considers switching allegiances to avoid sharing her downfall, but also begins imagining that he could prevent it 4.

Training and Rule of the Land of Ancestors

Kaguya raises and trains Yuya while searching for a place to plant the God Tree. He develops extraordinary strength and awakens the Sharingan. At five, he attacks guards near Ancestor City after their captain insults Kaguya, severing the captain’s arm with a water blade and scattering the others with fire 7 8.

After they take control of the Land of Ancestors, Yuya spends three years governing while Kaguya guards the tree. His public image is that of a pampered Divine Son, concealing his work through two pavilions and his artistic identity as Su Ye. When his legitimacy is challenged, Qingyi reveals these identities; Yuya confirms them through a flute performance dedicated to Kaguya 10 12 13.

Discovery of Kaguya’s Sacrifices

At eight, Yuya reunites with Kaguya and receives a Source Fruit after sparring with her. Its prophetic power reveals danger in her future. Her later chakra infusion strengthens him further, but the bond system exposes her worsening condition 14 15 18.

Heavenly Secrets Calculation reveals that Isshiki has lived inside Yuya since infancy, hidden through Sukunahikona. Kaguya absorbed the God Tree’s dangerous power to protect him, then transferred Isshiki into herself during the infusion. Yuya’s grief turns into guilt-driven training and a determination to become her protector 19 20 21 22.

Search for Abe Kiyuki

Divination identifies a mysterious girl as a lead to Kaguya’s salvation. Yuya mobilizes pavilion personnel and clones to find her, eventually sacrificing business income to sustain the search. The girl proves to be Abe Kiyuki, whose ancestor Abe Seimei left notes in the Wind-Snow Realm 25 26 33 35 36.

Yuya learns that the Yin-Yang Pearl needed for the ruins is connected to the Heavenly Sage Dynasty and its ranking tournament. Although initially willing to take it by force, he ultimately competes, wins the tournament, obtains the Pearl, and earns Tsukuyomi 37 40 41.

Separation and Isshiki’s Suppression

Kaguya intercepts Yuya at the Wind-Snow Realm’s closing entrance and begs him to return. Fearing that an explanation would expose his plans to Isshiki—and that taking her along would endanger them both—Yuya pretends to reject her 41 42.

The confrontation becomes a battle against Isshiki controlling Kaguya’s body. Yuya uses layered Wood Release attacks, Susanoo, a decoy, and the specially prepared Zhu Yin: Tsukuyomi to force Isshiki into temporary slumber. When the real Kaguya regains awareness and stabs him in confusion, he refuses to dodge. His Mangekyō awakens, and his subsequent departure earns the Rinnegan reward 43 45.

Yin-Yang Tomb and the Attempted Return

In the Wind-Snow Realm, Yuya bonds with a young Silver Dragon and reaches Seimei’s ruins. After recognizing that he has treated Kiyuki as a tool and left her in danger, he heals her and her fox, apologizes, and leaves a protective clone before entering the tomb 46 47.

The tomb’s trials reenact actual fragments of the planet’s struggle against the Ōtsutsuki. Yuya confronts Seimei and endures a prolonged battle with his shikigami under conditions that suppress ninjutsu and prevent Sage Mode. A time-binding ocular attack and concealed clone finally secure victory. Seimei offers a cleansing art that can save Kaguya, at the cost of the remaining Onmyōji souls 48 49.

Yuya accepts responsibility for the realm’s dragon and displaced beasts, enlightening them and establishing a summoning system. On emerging, he learns that almost three months have passed outside and Kaguya has fewer than ten days remaining. Unable to wait for the realm’s natural collapse, he cuts it into controlled fragments until he can sense the main world again 49 50.

Appearance

Yuya has silver hair, refined features, and dark eyes when his dōjutsu are inactive; system-enhanced charm makes him conspicuously attractive 7 10 15.

• Accelerated physical growth: Nearly the height of an ordinary eight-year-old at five; resembles an eleven- or twelve-year-old at eight 8 10.
• Early clothing: Wears a simple white shirt sewn by Kaguya 7.
• Mangekyō pattern: Black six-pointed stars in his pupils 43.
• Six Paths appearance: Rippled, six-tomoe eyes, a golden sage cloak, and twelve floating Truth-Seeking Orbs 45.

Personality

Yuya is playful, proud, and highly conscious of how others perceive him. He enjoys displaying his talents, compares his childhood strength with famous shinobi prodigies, and performs grand patriotic speeches even when privately motivated by system rewards. Beneath his carefree noble persona, he notices political agitation and understands the risks of both ignoring dissent and suppressing it indiscriminately 8 10 11 16.

His attachment to Kaguya gradually replaces his initial survival calculations. Learning what she has sacrificed leaves him willing to endure lethal divination backlash, public embarrassment, and exhausting training to save her. That devotion also narrows his priorities: he neglects business, becomes emotionally distant, and treats Kiyuki instrumentally before acknowledging the harm and apologizing 20 21 23 33 37 47.

He remains capable of self-questioning. The prospect of taking the Yin-Yang Pearl by force makes him consider whether growing power is eroding his humanity. His approach to the Silver Dragon and displaced beasts also shows that he can choose patience, cooperation, and stewardship rather than domination 40 46 49.

Abilities & Skills

Choice System and Bond Effects

A mysterious system presents actions with associated rewards, allowing Yuya to acquire attributes, talents, constitutions, and techniques 3 4 16 23.

• Strategic selection: Often favors abilities he cannot easily reproduce himself over techniques he expects to learn independently 18 23.
• Kaguya bond: Tracks her affection and status, provides special rewards, and warns him of attacks or consumption by unknown energy 4 18 21.
• Mental influence: Affection above 20 gives him a faint soothing effect on Kaguya; his grief later unconsciously causes nearby maids to cry 6 19.
• Uncertain influence: Becomes suspicious when options begin triggering directly from his thoughts 37.
• Unexplored reward: Reincarnation is listed among his bond rewards, but its operation is not demonstrated in the supplied events 18.

Exceptional Comprehension

Yuya can analyze techniques, derive advanced forms from basic principles, and redesign abilities that do not suit his constitution 16 22 26 39.

• Develops Shadow Clones from the basic Clone Technique 26.
• Safely dismantles a Rasengan by returning its chaotic chakra to ordered flow 22.
• Creates an original teleportation technique after discovering that the standard Flying Thunder God cannot work for him 39.
• Still benefits from practical experience: the Yin-Yang Tomb forces him to integrate powers previously acquired with little combat exposure 49.

Dōjutsu and Genjutsu

His ocular abilities combine perception, fate-reading, altered outcomes, mental attacks, time-binding, and chakra constructs 15 16 41 49.

• Sharingan: Reads movements and detects subtle chakra activity 8.
• Prophecy and Time: Initially permit a brief glimpse of past and future; Prophecy is limited by his eight-year-old body 15.
• Izanagi: Records his state and can undo injury or death within its effective duration. It does not restore spent chakra; his revival after fatal divination backlash leaves him severely weakened 16 21.
• Zhu Yin: Tsukuyomi: A specialized adaptation intended to injure Isshiki’s mind and force him into temporary slumber. Casting it causes bloody tears and severe visual impairment 43.
• Time-binding: Freezes Liuhe’s body, thoughts, movements, breathing, aura, and cells, creating an opening against Seimei 49.
• Amaterasu: Uses black flames in attacks and combines them with Susanoo and Yin-Yang Release 43 46 49.

Susanoo and Six Paths Power

Yuya manifests golden Susanoo armor and later combines his powers through Six Paths Mode 42 45.

• Uses Susanoo with three-tomoe eyes before his full Mangekyō awakening 42.
• Combines complete Susanoo with Sage Art: Wood Release: Buddha at the Summit 47.
• Reshapes Susanoo or manifests selected parts during extended combat 49.
• Uses Repulsive Force for flight and object manipulation 45 47.
• Shapes an Expansive Truth-Seeking Orb into a vast sword capable of cleaving the Wind-Snow Realm 50.
• Is not invulnerable: the tomb’s Onmyōji champion destroys eight Truth-Seeking Orbs and shatters his complete Susanoo 47.

Sage Body and Sage Mode

The Sage Body supplies exceptional resilience and recovery, while Sage Mode greatly amplifies his attributes and connection to nature 24 33.

• Sage Body makes the self-inflicted cutting damage of Rasenshuriken negligible 24.
• Enhanced Sage Mode avoids the stone-toad side effect and replenishes senjutsu chakra rapidly 33.
• His emotions can wither or restore nearby vegetation while in Sage Mode 34.
• Sage Mode produces unusual detachment but does not erase his feelings for Kaguya 33.
• Cannot enter Sage Mode during the final tomb battle 49.

Elemental Ninjutsu and Healing

Yuya develops elemental shape manipulation into a broad combat repertoire 15 24 26 33.

• Water, fire, and earth: Uses Torrent of a Thousand Blades, Flame Vortex, and Rock Spire Thrust during his spar with Kaguya 15.
• Wind: Reshapes Rasenshuriken chakra into swords, knives, staffs, whips, bows, and arrows; sustained control also permits flight 24 25.
• Lightning: Learns Chidori and Chidori Stream through accelerated clone training 26.
• Wood Release: Creates forests, binding hands, Wood Dragons, Wood Clones, and enormous Buddhist constructs 34 43 47.
• Ice, Lava, and Boil Releases: Awakens all three alongside Wood Release 33.
• Yang Release: Rapidly heals Kiyuki and her Celestial Fox 47.

Space-Time Techniques and Clones

Instant permits teleportation without the external inscription or medium required by the original Flying Thunder God 39.

• Can reach locations within his sensory range, places he has visited, or sites retaining his chakra 39.
• Develops a slower, modified Flying Thunder God usable without its usual constitution requirement 39.
• Uses clones for parallel training, worldwide searches, protection, companionship, and combat deception 26 35 43 47 49.
• Large-scale clone use taxes both chakra and mental stamina 26.
• Barriers at Seimei’s ruins block perception and space-time entry; the tomb also seals space until its destruction 46 49.

Divination

Yuya uses the Taiqing Aura-Observing Technique, also described as the Supreme Clarity Qi-Reading Art, to examine fortune and character. Heavenly Secrets Calculation reveals past events, possible futures, locations, and survival risks 15 17 20 40.

• Detects Kaguya’s deteriorating fate and uncovers Isshiki’s hidden residence inside him 20.
• Locates Kiyuki, her surviving relatives, and clues leading to Seimei’s notes 25 34 37.
• Inflicts health loss and mental strain; repeated use can escalate into fatal backlash 20 21.
• Produces clues and probabilities rather than guaranteed solutions 25 34 40.

Swordsmanship and Enlightenment

Yuya’s self-created Gale Sword Technique uses sweeping, storm-like strikes; his first complete demonstration includes forty-nine successive attacks 15 17.

• Advances the technique from B-rank to A-rank through practical training 22.
• Teaches it openly to Musashi and other observers rather than guarding it as a secret 17.

The Enlightenment Technique awakens intelligence, establishes bonds, and assists transformation 45.

• Helps the Silver Dragon connect with its ancient heritage 46.
• Calms the Wind-Snow Realm’s beasts and reduces their cruelty and bloodlust 49.
• Enables his effort to turn displaced creatures into summoning partners for humans 49.

Governance and Cultural Contributions

Contribution	Documented effect
Starlight Pavilion	Produces affordable silk and supplies clothing to people in need 12 13.
Sky Feather Pavilion	Distributes potatoes during drought and shares seeds and farming knowledge, greatly reducing famine 12 13.
Music and games	Popularizes songs and introduces Go under the identity Su Ye; also creates other recreational games 10 12 13.
Modern business methods	Teaches resource integration, technological optimization, and marketing. Starlight Pavilion revenue increases more than tenfold 25.
Public performance	Uses flute music, painting, and poetry to demonstrate his talents, strengthen legitimacy, and succeed in the ranking tournament 13 40 41.
Costs of his leadership	Imposes a “996” work schedule that guards are reluctant to challenge; later closes businesses to fund the search for Kiyuki, damaging pavilion finances 25 33.

Equipment / Weapons / Items

• Jade flute — Performs “Fate Brought Us Together,” composed for Kaguya 13 14.
• Cold-iron sword — Given by Kaguya. Yuya connects its material to the beast she fought in the snowy mountains and concludes that she forged it for him with Yin-Yang Release 23.
• Source Fruit — A deep-purple, walnut-sized crystal formed from the God Tree’s absorbed energy; consumed to increase chakra and gain Prophecy and Time 15.
• Yin-Yang Pearl / Deep Blue Crystal — Tournament prize used to open Seimei’s ruins 37 41 47.
• Kiyuki’s guidebook — A handwritten strategy guide for reaching the ruins, prepared before he recognizes the extent of her help 46 47.
• Abe Seimei’s notebook — Receives the Onmyōji remnant souls that offer to cleanse Kaguya at the cost of their existence 49.

Relationships

• Kaguya Ōtsutsuki — Adoptive caretaker, teacher, benefactor, and central emotional attachment. He calls her “Big sis” rather than “Mom”; their relationship later includes romantic feelings and increasingly intimate companionship. Her sacrifices drive his effort to save her 3 7 20 27 33.
• Qingyi — Loyal maid and public advocate. Reveals his achievements, wins over his critics, and supports him during his distress. He recognizes her diplomatic skill, although he also uses her confession to trigger a system reward 13 20 22.
• Miyamoto Musashi — Young guard and swordsmanship pupil. Yuya offers him shelter, status, and training after first insisting that he must earn the weight of his name 17.
• Hongyun — Starlight Pavilion administrator who implements his business plans and organizes the search for Kiyuki. His rare praise deeply affects her 25.
• Abe Kiyuki — Onmyōji guide whose ancestral knowledge leads him to Seimei. He initially pressures and neglects her, then sincerely apologizes, heals her, and promises to repay her assistance 36 37 46 47.
• Ōtsutsuki Isshiki — Hidden enemy who lived inside Yuya from infancy before Kaguya drew him into herself. Yuya develops Zhu Yin specifically to suppress his control of her 20 43.
• Abe Seimei — Historical Onmyōji champion and tomb opponent. After testing Yuya, entrusts him with the dragon and displaced beasts and sacrifices the remnant souls to offer Kaguya a cure 48 49.
• Silver Dragon — Powerful juvenile dragon that first resents his chakra, then bonds affectionately with him through natural energy. Yuya promises to take it beyond the confined realm 45 46.
• Summoning beasts — Creatures enlightened and taught a modified Flying Thunder God to establish contracts with humans. They later remember his fragmentation of the realm as the Day of Creation 49 50.

Notable Quotes

“How could I live without Princess Kaguya...” 19

“This time... I’ll protect you...” 22

“I’ll save you. I promise...” 26

“I won’t forget what you’ve done for me. I was careless this time. If you ever need anything, you can come to me.” 47

Trivia

• Su Ye is both his pre-adoption name and his musical identity. The Peerless Faction admired Su Ye’s talent while the Divine Child Faction admired Yuya; the rival groups reconciled after discovering they supported the same person 3 12 13.
• His declaration that he likes men is a system-task response, not a reliable statement of attraction. It nevertheless becomes a persistent public misunderstanding 22 23 40.
• Kiyuki calls him “Mr. Incubus” because of his beauty and the effect he has on her heartbeat; Yuya rejects the identification 37.
• His knowledge of Naruto is useful but incomplete. Seimei’s account of the Ōtsutsuki’s cosmic nature forces him to recognize how little his previous-life anime knowledge explains about the world 48.