Yu

Biodata

Feature	Details
Name	Yu (悠)
Alias(es)	Akihi Yu; Uminari; Six Paths; Knight Haruka; Totosai (clone) 85 239 641 696
Species/Race	Otsutsuki; later a Bloodline Snare 152 817
Gender	Male
Affiliation	Tokyo Metropolitan Jujutsu Technical High School — Principal; publicly regarded as head of the Keikain Family 311 318
Occupation/Role	Jujutsu sorcerer/Onmyoji; cultivator; controller of the Divine Tree and the King of Fighters Plane 93 580
Status	Active 817
First Appearance	2

Power Progression

Stage / Realm / Level	Chapter	Notes
Seed of the Divine Tree	2	Gains authority to absorb planetary chakra, grant chakra and ninjutsu, and reclaim either from recipients.
Dragon-level combat strength	270	Can draw on the Divine Tree's power through Amame Ei to reach Dragon-level strength, but cannot leave Tokyo while doing so.
Rinnegan	623	Awakens the Rinnegan through his own growth; possesses enough chakra to use the Samsara of Heavenly Life Technique without meaningful strain.
Dimensional ascension	816	Ascends into a higher-dimensional state, manifesting countless incarnations across different dimensions of time.
Bloodline Snare	817	After absorbing the powers of the High Heavens and Burning Hells, becomes a genuine Bloodline Snare said to exceed an ordinary one.

History

Transmigration and the Divine Tree Seed

Yu transmigrated into Akihi Yu's body in a parallel-world Tokyo and began attending a third-rate public school. While dealing with bullying, he discovered the Seed of the Divine Tree and recognized that planting it carelessly could drain the world's chakra and draw global attention. 2

Rather than remain the world's sole supernatural being, Yu chose to distribute chakra and ninjutsu to others. He retained the authority to reclaim every bestowed power, an act that immediately kills the person stripped of it. 2 85

Creation of the Transcendent Age

Aware that modern surveillance would expose the Divine Tree if he planted it in secret, Yu chose to establish it openly in Tokyo. The Imperial Divine Tree's emergence transformed Tokyo's supernatural landscape: it drove back storm clouds, drew crowds of pilgrims, and gave Transcendents the confidence to operate publicly. 34 90

Yu concealed his true role by presenting himself as an Inherited Transcendent and a thousand-year successor to Onmyodo. He used this fabricated heritage to establish the rules and public mythology of the supernatural world. 93

Mentor, Protector, and Principal

Yu accepted Keikain Yura as his disciple and taught her Shikigami cultivation and the Chimera Technique. His association with Yura led the public to treat him as the Keikain Family's head, despite him not actually belonging to the family. 117 128 318

When Abe no Seimei threatened the Divine Tree and the Island Nation, Yu repelled him with the Dead Demon Consuming Seal. He later became principal of Tokyo Metropolitan Jujutsu Technical High School, where he began formalizing instruction in Spiritual Power and nature transformation. 270 311 323

Dimensional Ascension

Yu eventually expanded his influence beyond Earth, planting Divine Tree branches across the Solar System and using chakra-bearing beings as coordinates for instantaneous travel. 749 756

After a self-triggered transformation, he achieved dimensional ascension and became capable of existing through countless incarnations across time and dimensions. He subsequently chose to reduce his direct intervention in the world's affairs, preferring to observe its natural development. 816 817

Personality

Yu is calculating, self-assured, and highly conscious of appearances. He prefers to create a convincing narrative around supernatural events rather than expose his true position as their architect, using aliases, clones, inherited lineages, and staged conflicts to control how others understand the world. 85 93 132

He often claims that wider crises are not his concern, yet he repeatedly acts when Tokyo, the Divine Tree, his sister, or his disciples are directly endangered. 117 270 406

Yu is also an enthusiastic advocate of cultivation. He habitually pushes those around him to train, improve their techniques, and seek higher ranks, partly because stronger superhumans advance his own long-term goals. 273 575

Abilities & Skills

Divine Tree Authority

Yu's Divine Tree Seed is the foundation of the world's supernatural system.

• Can absorb chakra from living beings across the planet. 2
• Can bestow chakra and ninjutsu upon other beings at will. 2
• Can reclaim bestowed chakra and techniques; the target dies immediately when stripped of them. 2 85
• Uses the Divine Tree as a vast chakra source, allowing sustained use of chakra-intensive techniques. 94
• The Divine Tree's domain deters supernatural violence; Transcendents within it instinctively understand that violent actions will bring destruction. 90

Shadow Clones and Personas

Yu uses Shadow Clones to operate in multiple places, sustain public identities, and develop abilities in parallel.

• Clone experiences and training insights return to the main body when a clone disperses. 132
• Maintained the Uminari persona through a clone while directing a typhoon against the American fleet. 85
• Uses incarnations and disguises such as Totosai, Six Paths, and Knight Haruka to act without exposing his primary identity. 239 641 696

Onmyodo and Spiritual Power Mastery

Yu publicly identifies as a jujutsu sorcerer versed in Yin-Yang and Five Elements arts. 93

• Teaches the five Spiritual Power attributes and their restraining relationships. 323
• Demonstrates Fire, Wind, Lightning, Water, and Earth nature transformations. 323
• Explains that mastering a nature transformation is a hallmark of Ghost Rank, while fusion of two attributes leads toward Dragon Rank. 323 575
• Uses Yin Release to create forms and Yang Release to give them physical vitality; together, he uses Yin-Yang Release to create living, memory-bearing constructs. 326

Super Beast Imitating Drawing

Yu creates ink-based Shikigami through painting techniques.

• Created the Ink Owl, a ten-meter-wingspan construct capable of carrying Yu, Sora, and Nao through the air. 90
• Uses ink constructs as transportation and as part of his public Onmyoji persona. 90 169

Sealing, Space, and Ocular Techniques

Yu possesses a broad set of high-level combat and mobility techniques.

• Dead Demon Consuming Seal — drove Abe no Seimei away by summoning Izanami-no-Mikoto's phantom to drag the target into Yomi; the technique was believed to require Yu's own death as its price. 270
• Flying Thunder God Technique — enables instant travel to distant battlefields. 360
• Repulsion ability — lets him fly into space; he reached an altitude of eight hundred thousand meters. 404
• Rinnegan — awakened naturally and supports techniques such as the Samsara of Heavenly Life Technique. 623

Dimensional Existence

Following his ascension, Yu can exist through innumerable bodies across dimensions and time.

• Achieved dimensional ascension after a planet-wide burst of light that caused no physical damage. 816
• Became a Bloodline Snare after absorbing the powers of the High Heavens and Burning Hells. 817
• Creates spacetime wormholes at the Solar System's edge to enable human exploration of space. 817

Equipment / Domains

• Seed of the Divine Tree — Yu's original transmigration cheat and the basis of his chakra authority. 2
• Imperial Divine Tree — a Tokyo-spanning chakra source and protected supernatural sanctuary. 90 94
• Yasakani no Magatama — used through the Uminari persona to suppress Transcendents in both the Island Nation and America. 85
• King of Fighters Plane — a half-plane controlled by Yu, into which he invests resources to create conflicts and opportunities for growth. 580

Relationships

• Sora — Yu's younger sister and closest companion. They live together, discuss supernatural affairs, and repeatedly protect one another. 93 117 406
• Nao — Initially his class representative and defender against bullying; later manages industries entrusted to Yu and becomes the mother of his child. 2 189 592
• Keikain Yura — Yu's disciple. He teaches her Shikigami cultivation, the Chimera Technique, and attribute fusion. 117 273
• Amame Ei — Miko associated with the Divine Tree. Yu protects the tree partly out of concern for her and can channel its power through her. 270 471
• Director Takeya — Government official who regularly seeks Yu's advice on supernatural crises and recruits him as Jujutsu High's principal. 210 311
• Hongo Hina — Powerful associate who gifted Yu a black card granting extraordinary global privileges. 94
• Tsukuyomi — Yu and Nao's daughter, who displays supernatural abilities from infancy. 592 641

Notable Quotes

“My Secret Technique is that however strong ‘others’ are, I'll be just as strong.” 575

“Everything I do is perfectly aboveboard.” 817

Trivia

• Every Transcendent in the setting ultimately originates from Yu's distributed chakra. 85
• Yu is widely known as the strongest Onmyoji of the modern age. 344 471
• Despite his public image as an influential principal and Onmyoji, Yu describes his ordinary life as “plain and unadorned.” 311