Yun Xi

Biodata

Feature	Information
Name	Yun Xi (云玺)
Gender	Male
Affiliation	Konohagakure; later pursued as a potential ally by Uchiha Itachi
Occupation/Role	Ninja Academy student; initially regarded as Konoha's dead-last civilian student
Status	Alive
First Appearance	Chapter 3

Power Progression

Stage / Realm / Level	Chapter	Notes
Ordinary civilian / Academy dead-last	6	Initially has little chakra and poor perceived talent in ninjutsu, taijutsu, and genjutsu.
Chakra at genin level	11	Reaches genin-level chakra after one night of cultivation, aided by the Tenfold Chakra Training Speed reward.
Chunin-level chakra	15	Raises his chakra reserves to those of an average chunin after a week of training with Itachi.
Elite chunin-level combat ability	15	Rapidly masters Fire Style techniques, taijutsu fundamentals, and shuriken use; Itachi describes his growth as reaching elite chunin strength.
Jonin-level chakra reserves	15	Reported to possess chakra reserves comparable to a typical jonin.
Jonin-level combat strength	21	Assesses himself as barely having jonin-level combat strength while planning against Danzo and the Konoha leadership.
Two-Tomoe Sharingan	21 23	Obtained as a system reward for accepting the mission to alter Itachi's fate.
Three-Tomoe Sharingan	24	Chooses a controlled fusion over temporary Six Paths-level power at the cost of sanity; gains a Three-Tomoe Sharingan as compensation.
Physically enhanced body	25	System compensation greatly improves his physique, strength, speed, height, and musculature.

Background / History

Yun Xi transmigrates into the ninja world in the body of a twelve-year-old Konoha Academy student known for being the village's dead-last. Determined to survive a world he considers far more dangerous than the version portrayed in the original story, he makes becoming stronger his central priority. 4 6

His circumstances change after he encounters Uchiha Itachi outside Konoha. By keeping their meeting secret, Yun Xi receives Itachi's Fire Style training method; as a hidden reward for becoming a Konoha resident, he also gains chakra-training speed ten times greater within the village. 3

Danzo's interest in Yun Xi begins because of reports of his exceptional regenerative ability, which make him a possible subject for First Hokage Cells experiments. Yun Xi rejects Danzo's offer of help, escapes Root unharmed, and begins treating Danzo as a future threat. 8 9

Personality

Yun Xi is cautious, pragmatic, and strongly motivated by self-preservation. When confronted with powerful figures such as Danzo, Hyuga Hiashi, and Orochimaru, he conceals information, calculates escape routes, and avoids revealing his abilities unless necessary. 8 32 45 46

He is also bold when the stakes demand it. He repeatedly seeks to interfere with Itachi's planned fate, proposes alliances against Konoha's factions, and refuses Orochimaru's recruitment despite direct threats. 16 21 43 48

Although he frequently complains about the Choice System and its inconvenient rewards, Yun Xi adapts quickly to its outcomes and persistently demands compensation when the system's errors harm him. 24 25 28

Abilities & Skills

Choice System

A system that presents Yun Xi with dangerous choices and grants rewards based on his selections.

• Granted the Fire Style Ninjutsu Training Method for keeping his meeting with Itachi secret. 3
• Granted Tenfold Chakra Training Speed within Konoha. 3
• Provided the Flame-Flame Fruit, Sharingan rewards, Physical Enhancement, and Primary Ninja Tool Mastery. 14 23 25 28
• Its choices do not impose explicit failure penalties, though options may expose Yun Xi to danger. 43

Chakra Cultivation

Yun Xi's chakra grows at an abnormal pace because of his tenfold training-speed enhancement.

• Progressed from minimal chakra to genin level in a single night. 11
• Reached average chunin-level chakra after a week of training. 15
• Later possessed chakra reserves comparable to a typical jonin. 15
• The enhancement functions within Konoha's boundaries. 3

Fire Release

Yun Xi specializes in Fire Style ninjutsu, supported by Itachi's instruction, a Fire Style training method, and later the Flame-Flame Fruit.

• Fire Style: Phoenix Sage Fire Technique — Initially produces only a weak flame, then quickly develops a single controllable fireball after Itachi's guidance. 11 12
• Fire Style: Great Fireball Technique — Can empower the technique far beyond its ordinary form by infusing it with his flame energy. 19
• Fire Dragon Technique — Used during his sparring match with Itachi. 18
• His Phoenix Sage Fire Technique, though C-rank, can rival B-rank Fire Style techniques in power and range. 15
• Combining his Sharingan, Flame-Flame Fruit, and Fire Release produces his strongest flame state, capable of crystallizing sand. 27
• The system later increases his Fire Release power by 10%. 27

Flame-Flame Fruit

A Logia-type Devil Fruit ability obtained from the system, providing Yun Xi with fire affinity and elemental powers. 13 14

• Enhances the strength of his Fire Style ninjutsu. 15 19
• Enables Elementalization, transforming his body into a fiery, chakra-like state. 18
• Renders physical attacks and taijutsu ineffective while active. 13 35
• Causes contact attacks to burn opponents, as demonstrated against Hyuga Hiashi's Gentle Fist. 35
• Cannot overcome Hyuga Hiashi's Eight Trigrams Palms: Heavenly Spin defense by brute force alone. 36

Sharingan

Yun Xi receives and fuses a Sharingan through system rewards.

• Evolves from Two-Tomoe to Three-Tomoe after rejecting a sanity-destroying surge of power. 21 24
• Enhances visual perception and sensory ability after fusing with his body. 25
• Allows him to copy ninjutsu at the Three-Tomoe stage. 24
• Helps him evade Orochimaru's initial attack. 47
• He initially hides its existence from Itachi because he cannot explain possessing an Uchiha ocular ability. 19

Physical Enhancement

A system compensation reward that transforms Yun Xi's previously frail body. 25

• Improves his physical strength and fitness substantially. 25
• Increases his height from approximately 1.5 meters to approximately 1.8 meters. 25
• Gives him visible muscle definition and enough speed for a casual punch to leave an afterimage. 25
• Addresses the physical weakness that previously limited his taijutsu and Eight Inner Gates training. 25

Taijutsu and Ninja Tools

Yun Xi receives training in practical taijutsu and shuriken use from Itachi. 15

• Possesses training material for the first four gates of the Eight Inner Gates, but postpones serious practice because it requires too much time. 6 10
• Receives Primary Ninja Tool Mastery for accompanying Tenten on a three-day spring outing. 28
• His unassisted physical combat ability remains inferior to an elite jonin such as Hyuga Hiashi. 35

Equipment / Weapons / Items

• C-rank Fire Style ninjutsu scrolls — Given by Uchiha Itachi. 8
• Fire Style Ninjutsu Training Method — System reward. 3
• Eight Inner Gates training method — Covers the first four gates. 6
• Flame-Flame Fruit — System reward that grants his elemental fire powers. 14

Relationships

• Uchiha Itachi — Friend, mentor, and ally. Itachi trains Yun Xi in Fire Style, taijutsu, and shuriken use; Yun Xi attempts to help him avert the Uchiha Clan Downfall. 12 15 16 21
• Uchiha Sasuke — Younger friend and Itachi's brother. Yun Xi promises Itachi that he will help Sasuke if needed. 13 14
• Tenten — Yun Xi treats her like a younger sister; she is attached to him and accompanies him during the confrontation with Hyuga Hiashi. 4 28 37
• Hyuga Hiashi — Potential ally and opponent. Yun Xi tries to leverage knowledge of Byakugan evolution for an alliance; their battle ends in a stalemate. 32 35 36
• Anko Mitarashi — A Konoha shinobi assigned to warn and later protect Yun Xi. Their interactions are cordial and often involve Yun Xi offering dumplings for information. 10 38 50
• Sarutobi Hiruzen — The Third Hokage monitors Yun Xi because of Danzo's interest and secretly arranges protection for him. 9 40 41 50
• Danzo — Root leader who seeks Yun Xi as a potential experimental subject and later has Root target him. 8 9 42
• Orochimaru — Seeks Yun Xi for his potential and unusual abilities, attempts to recruit him, and leaves him with a Cursed Seal after Yun Xi refuses. 45 47 48

Story Role / Major Arcs

Encounter with Itachi and Root

Yun Xi's secret encounter with Itachi gives him access to Fire Style training and begins their cautious relationship. Shortly afterward, Root brings him to Danzo, whose interest in Yun Xi's regenerative ability draws the attention of Orochimaru and the Third Hokage. 3 7 8 9

Rapid Training and Alliance with Itachi

After receiving Fire Style scrolls from Itachi, Yun Xi rapidly cultivates chakra and learns Fire Release. Itachi becomes his mentor and recognizes him as a friend, while Yun Xi reveals that he knows of Itachi's dealings with Danzo and offers help. 8 11 12 15 16

Uchiha Clan Intervention

Yun Xi chooses to change Itachi's fate and develops a plan to delay the Uchiha Clan massacre by finding allies. His system-granted Sharingan evolves to Three-Tomoe during this period, and he strengthens his body through compensation for a system error. 21 24 25

Hyuga Negotiation and Battle

Using knowledge of Byakugan evolution as leverage, Yun Xi attempts to secure Hyuga Hiashi as an ally. Hiashi attacks him instead; Yun Xi counters with Elementalization and taijutsu immunity, but neither can defeat the other due to Hiashi's Heavenly Spin defense. 32 35 36

Orochimaru's Recruitment Attempt

Orochimaru confronts Yun Xi, offers to make him stronger, and attempts to force him into joining the Sound Village. Yun Xi reveals his Sharingan and fire abilities in resistance, refuses the offer, and is left with Orochimaru's Cursed Seal. 45 47 48

Trivia

• Yun Xi initially believes Danzo summoned him to Root for human experimentation. 8
• He considers the Flame-Flame Fruit his greatest trump card. 19
• He regrets choosing a three-day spring outing with Tenten because it interrupts his training during the looming Uchiha crisis. 28
• Most of Konoha still see him as an unremarkable Academy dead-last despite his hidden strength. 38 42