Uchiha Xiu

Biodata

Feature	Information
Name	Uchiha Xiu (宇智波修)
Alias(es)	East Sea Team Captain; Fifth Hokage
Species/Race	Human; Uchiha clan member
Gender	Male
Affiliation	Uchiha clan; Konohagakure; East Sea Team
Occupation/Role	Reincarnator; captain of the East Sea Team; Fifth Hokage of Konohagakure
Status	Active 69
First Appearance	Chapter 1

Power Progression

Stage / Realm / Level	Chapter	Notes
One-Tomoe Sharingan	1	Had awakened a single tomoe after despair during a mission and the loss of two comrades; already possessed chakra reserves far beyond an ordinary genin. 1
Two-Tomoe Sharingan; Second-Stage Gene Lock	6, 7	Completed the Alien I trial, qualified for captain certification, awakened the Two-Tomoe Sharingan, and reached the second Gene Lock stage. 6 7
Improved Hashirama Cells / Yang Release	8, 9	Exchanged for a B-rank Hashirama Cell injection, greatly increasing chakra, vitality, physical ability, recovery, and ocular power. 8 9
Intermediate Indra Power; Three-Tomoe Sharingan	15, 16	Combined Indra-level Yin Release with his Hashirama-derived Yang Release; his Sharingan stabilized at three tomoe, though his first attempt at Mangekyo awakening fell short. 15 16
Yin Seal / Strength of a Hundred Seal	31, 32	Cultivated the seal under Tsunade and formed its forehead mark, mastering an S-rank forbidden technique in a day. 31 32
Kamui-assisted Flying Thunder God	38	Used a Kamui eye to analyze spatial patterns and successfully activated the Flying Thunder God Technique. 38
Primal Mangekyo Sharingan; Susanoo	41	Awakened his original Mangekyo Sharingan, its unique techniques, and an unusually advanced Susanoo capable of reaching Complete Body state briefly. 41
Golden Pupils	55	Gained a brow-eye ability that purifies evil spirits and sees through illusions. 55
Sage Mode	59, 68	Began senjutsu training at Shikkotsu Forest and later deployed Sage Mode alongside Susanoo and Wood Release against Madara. 59 68
Initial Fourth-Stage Gene Lock	61, 68	Forced open the Fourth Stage through genetic optimization and natural energy, triggering an Inner Demon; later demonstrated its microscopic control in battle. 61 68

History

Before the Main God Space

Xiu is a transmigrator reborn into the Uchiha clan. Before entering the Main God Space, he recognized that Sasuke entering the Academy and Itachi joining Anbu brought the Uchiha massacre closer. Unable to alter Shisui and Itachi's views through persuasion, he considered defecting to Kumogakure if he could not become strong enough to survive. 1

At this point, Xiu possessed a One-Tomoe Sharingan and unusually large chakra reserves. His Fire Style: Great Fireball Technique could melt steel while consuming only around one-tenth of his chakra; he judged himself capable of defeating several civilian ninja at the same level. 1

He was respected by younger Uchiha children, whom he instructed in shuriken throwing. Despite their admiration, Xiu viewed his own Sharingan as a reminder that Uchiha power came from loss. 1

Selection and the *Alien I* Trial

A mysterious computer prompt led to Xiu's selection by the Main God. He awakened in the Alien I world aboard the Nostromo, where he immediately assessed the other reincarnators and chose to pursue authority rather than wait for a stronger leader. 2

He explained the Main God's rules to the newcomers, earned 100 reward points, briefed the group on the Xenomorph threat, and independently hunted Aliens while the others armed themselves. 2 3 His successful trial earned him captain certification for the East Sea Team, along with partial Main God authority and a permanent enhancement. 6

Reinforcement and Return to Konoha

As captain, Xiu exploited access to the Main God's exchange system to select compatible enhancements. He combined improved Hashirama Cells with Intermediate Indra Power, creating a Yin–Yang balance that massively increased his chakra, bodily strength, recovery, and Sharingan potential. 8 9 15 16

After returning to Konoha, Xiu sought training from Elder Shin. He used his Three-Tomoe Sharingan to copy advanced techniques during a sparring match, rapidly expanding his Fire, Water, Earth, Lightning, taijutsu, and sealing repertoires. 17 18

Uchiha Rebellion and Rise to Hokage

Xiu entered the Uchiha clan's political conflict as both factions recognized his growing strength. He rejected compromise as a path to peace and won hawkish support with the principle that peace must be secured through struggle. 20 21

When Danzō ambushed Shisui, Xiu rescued Shisui, defeated Danzō, seized his remaining Mangekyo eye, and later killed him with Wood Release after Danzō attempted the Reverse Four Symbols Sealing. 22 23

Xiu then fought the Third Hokage, Sarutobi Hiruzen, in a clash that devastated much of the Forest of Death. Following the conflict, he was recognized as Konoha's Fifth Hokage. 25 26

Fifth Hokage

As Hokage, Xiu improved Konoha's living conditions, increased mission rewards, and ensured Naruto received better treatment and financial support. 28 He also used Kotoamatsukami to acquire Kakashi's Kamui eye, adding space-time ocular power to his arsenal. 28

His rule quickly became entangled in escalating conflicts with other villages. Xiu battled Ōnoki, outmaneuvered Dust Release with spatial techniques, and used Negacion to extract White Zetsu cells from Obito and the Tailed Beasts. 35

He subsequently mastered Flying Thunder God and sealed the Four-Tails, Son Goku, gaining the Tailed Beast's cooperation. 38

Later Reincarnation Trials

After returning to the Main God Space, Xiu created Kaguya-hime as a loyal East Sea Team member using genetic materials, a Kaguya-based template, and knowledge infusion. 40 He then awakened his original Mangekyo Sharingan and began preparing for the Fourth Stage of the Gene Lock. 41

During the East Sea Team's later operations in The Mummy world, he led battles against supernatural enemies, including a vampire Duke and the undead Imhotep. His Takemikazuchi-enhanced lightning could destroy undead flesh, curses, and soul entities, converting the remnants into Yin Release chakra. 45 55

Fourth Stage and the Warring States Battle

At Shikkotsu Forest, Xiu used Sage Mode and natural energy to force open the Fourth-Stage Gene Lock. The attempt unleashed an Inner Demon centered on the Uchiha massacre, causing his microscopic chakra control and killing instinct to run wild. 61

He later regained clarity and defeated Might Guy in taijutsu before routing Kirigakure's forces and capturing the Fourth Mizukage, Karatachi Yagura, alive. 62

During the battle involving reincarnated Hashirama and Madara, Xiu deployed Sage Mode, a Susanoo-armored Wood Golem, and Fourth-Stage microscopic control. He resisted Madara's Complete Body Susanoo, shattered the falling meteors of Tengai Shinsei, and escaped Madara's Chibaku Tensei. 68 69

Appearance

Xiu is a notably handsome Uchiha youth whose appearance is mature for his age. His looks and bearing draw attention even among unfamiliar reincarnators. 2

• Wears a sharp black ninja outfit with the Uchiha fan crest on the back. 2
• Uses a Konoha forehead protector and carries two ninja-tool pouches containing scrolls. 2
• Has a physique described as unusually well-developed for his age. 8
• Later wears the Hokage haori as Fifth Hokage. 58
• During an unstable Fourth-Stage transformation, he temporarily developed horns, shoulder spikes, and scale-like patterns before removing the dominant Ōtsutsuki traits because he disliked the appearance. 61

Personality

Xiu is ambitious, analytical, and intensely practical. He treats the Main God Space as an opportunity to escape the predetermined fate of the Uchiha massacre: power has a clear price there, and he is willing to exploit that system methodically. 2

He is a strategist who favors preparation, information advantages, escape plans, and overwhelming force. He studies enemy settings, selects enhancements for compatibility, equips his team against specific threats, and uses clones or spatial tools to avoid unnecessary risks. 3 8 16 35

Though initially cold and openly unwilling to “babysit” weaker teammates, Xiu develops into a supportive captain. He heals injured members, guides their advancement paths, approves complementary team builds, and arranges combat training in Konoha for the East Sea Team. 3 15 16 52 58

His ideal of peace is militant rather than conciliatory. He believes that negotiations cannot secure what cannot first be defended by force, a stance that wins the Uchiha hawks' support while placing him at odds with Shisui's approach. 21

Abilities & Skills

Sharingan and Copying Ability

Xiu's Sharingan developed from one tomoe to Three-Tomoe and ultimately Mangekyo. It grants powerful perception, dynamic vision, genjutsu potential, and the ability to copy techniques witnessed in battle. 1 17 18 41

• Copied numerous Fire, Water, Earth, and Lightning Release techniques while sparring with Elder Shin. 17 18
• Uses visual perception and combat analysis to anticipate attacks and construct tactical responses. 3 18
• Maintains multiple transplanted dōjutsu for situational use, including Shisui's Kotoamatsukami eyes and Kakashi's Kamui eye. 28 40

Mangekyo Sharingan

Xiu's original Mangekyo awakened through obsession rather than a conventional traumatic catalyst. Its abilities are Wakahime and Takemikazuchi. 41

• Wakahime (left eye) — binds to a designated target and freezes its local time, halting attacks, ninjutsu, taijutsu, and genjutsu around it for the duration. It can also slow the consumption of vitality and attribute chakra through a temporal barrier. 41
• Takemikazuchi (right eye) — augments Lightning Release into shields, blades, arrows, spears, and other forms; it can reinforce Susanoo and annihilate souls through augmented Yin Release. 41
• His right-eye lightning spear destroyed Imhotep's undead body and dispersed associated curses and soul entities. 45
• He can use Takemikazuchi to remove harmful status effects, including the paralysis-inducing pollen of Deep Forest Bloom. 68

Susanoo

Xiu awakened Susanoo immediately alongside his Mangekyo and advanced it beyond the typical initial skeletal manifestation. 41

• Manifested skeletal arms, a skeletal body, muscular layers, armor, and a fourth form augmented with the Four-Tails' Lava Release chakra. 41
• Can briefly enter Complete Body Susanoo, granting flight, mountain-cleaving power, and the ability to perform hand seals from within the construct. 41
• Fused Sage Mode, Wood Release, and Susanoo to create a golden-armored Wood Golem capable of fighting Madara's Susanoo. 68
• Destroyed two falling meteors with Susanoo and Sage Mode. 69

Wood Release

Xiu gained Wood Release through his modified Hashirama Cells. Its properties include immense battlefield control and the ability to absorb Tailed Beast chakra. 16 23

• Uses Wood Wall for high-strength defense against chakra-enhanced weapon fire. 25
• Uses Deep Forest Emergence to overwhelm opponents with massive roots and trees. 23
• Can create Wood Dragons, large wooden constructs, and a Wood Buddha more than 300 meters tall. 35 56 68
• His Wood Release killed Danzō and overpowered Danzō's own Hashirama Cell-derived techniques. 23

Senjutsu and Sage Mode

Xiu trained under Katsuyu Sage at Shikkotsu Forest. He entered meditation immediately and was judged capable of mastering Sage Mode. 59

• Draws natural energy with exceptional speed and control. 59 68
• Combines Sage Mode with Susanoo and Wood Release for colossal combat constructs. 68
• Used Shikkotsu Forest's vast natural chakra as the foundation for his Fourth-Stage Gene Lock attempt. 61

Gene Lock

Xiu's Gene Lock is a major force multiplier for his existing bloodline and chakra systems. 7 41

• Second Stage — enhances bodily performance, reflexes, durability, recovery, and fine energy control outside the brain. 7 31 61
• Third Stage — enables simulation of others' thoughts and abilities after unity of mind and body. 61
• Fourth Stage — grants microscopic control powerful enough to focus energy with far greater destructive precision, but risks triggering his Inner Demon. 61 68

Sealing and Space-Time Ninjutsu

Xiu has extensive sealing knowledge and pursues space-time techniques as a core area of study. 20 38 39

• Mastered the Transcription Seal, allowing a dōjutsu or ninjutsu to be preset in a Sharingan and triggered when specified conditions are met. 20
• Mastered the Yin Seal / Strength of a Hundred Seal under Tsunade's guidance. 31 32
• Learned Flying Thunder God by using Kamui to observe spatial patterns and teleporting to a pre-marked Konoha location. 38
• Uses Kamui-derived space manipulation to redirect attacks such as Ōnoki's Dust Release. 35

Fire, Water, Earth, and Lightning Release

Xiu possesses a broad ninjutsu library, expanded through Uchiha copying techniques and direct combat training. 1 17 18

• Fire Release — Great Fireball Technique, Great Dragon Fire Technique, Dragon Flame Song Technique, Majestic Destroyer Flame, and Searing Migraine. 1 18 26
• Water Release — Water Dragon Jutsu, Water Wall, Water Dragon Biting Explosion, and Great Waterfall Technique. 17 18
• Earth Release — Earth Wall, Earth Flow River, Earth Dragon Bullet, Earth Spear, and Ultra-Light-Weight Rock Technique. 17 18 24
• Lightning Release — Four Pillar Bind and Takemikazuchi-enhanced lightning weapons. 18 41

Golden Pupils

Xiu possesses Golden Pupils, a brow-eye ability acquired later in his progression. 55

• Purifies evil spirits. 55
• Sees through illusions. 55
• The Eye of the Sun God at his brow helped restore his consciousness during an Inner Demon episode. 62

Equipment / Weapons / Items

• Ninja tools and sealing scrolls — carries kunai, shuriken, explosive tags, steel wire, and scrolls for combat setups. 2 4
• Thunder God Sword — retrieved from Anbu stores and tested after becoming Hokage. 32
• Negacion — one-use emergency teleportation item that can remove Xiu and acknowledged targets from danger; it cannot be blocked, locked, or spied upon, including by Kamui. 16
• Transplanted dōjutsu — possesses and swaps among Kamui and Kotoamatsukami eyes when needed. 28 40
• Flying Thunder God kunai — issued to trusted East Sea Team members, including Zhao Yingkong. 44

Relationships

• Uchiha Shin — elder and mentor who trained Xiu in higher-level ninjutsu; their sparring exposed Xiu's extraordinary copying talent and earned mutual respect. 17 18
• Uchiha Shisui — ideological rival turned close ally. Xiu saved him from Danzō, gave him a Three-Tomoe Sharingan after his loss, and later relied on his Kotoamatsukami support in major battles. 21 22 35
• Uchiha Fugaku — clan head who viewed Xiu as central to the Uchiha's future and later considered him a potential Hokage. 20 25
• Tsunade — mentor in the Yin Seal and Sage Mode; Xiu trusts her with military and economic affairs, while she openly worries over his safety and is described as loving him. 31 38 39 69
• Kaguya-hime — Xiu's created team member, modeled after Ōtsutsuki Kaguya and equipped through knowledge infusion. She is loyal and affectionate toward him; the two also enter a physical relationship. 40 41
• Kobayashi Yoshito — East Sea Team member and Soul Bender. Xiu supports his advancement and trusts him as part of the team's combat-support structure. 10 16
• Kitagawa Nacai — East Sea Team healer. Xiu reassures her after setbacks and helps develop her Holy Light-based support role. 15 16
• Zhao Yingkong — assassin recruited into the East Sea Team. Xiu provides her with tailored enhancement advice, a Flying Thunder God kunai, and access to Konoha's elite sparring partners. 44 50 58
• Naruto Uzumaki — as Hokage, Xiu improves Naruto's treatment by villagers and increases his financial support. 28
• Shimura Danzō — enemy who sought to control Xiu with a cursed seal, ambushed Shisui, and was ultimately killed by Xiu's Wood Release. 19 22 23
• Uchiha Madara — powerful adversary who recognizes Xiu as a worthy opponent; their battle pits Madara's Rinnegan and Susanoo against Xiu's Sage Mode, Mangekyo, Wood Release, and Fourth-Stage control. 68 69

Notable Quotes

“If you seek peace through struggle, peace will prevail; if you seek peace through compromise, peace will perish.” 21

“Never think of obtaining at the negotiating table what you cannot secure on the battlefield.” 21

“City-level destruction, wiping out small nations—replicating these feats now is not difficult for me. Limiting myself to just that would be truly boring.” 41