Samu Kokaze

Biodata

Feature	Details
Name	Samu Kokaze (左木风)
Alias(es)	Feng / Xiaofeng; Zuo Mu 13 53 222
Species/Race	Human transmigrator from Earth; later augmented through the Nano Core, Nanobugs, and Hashirama Gene 2 186
Gender	Male
Affiliation	Kara; Akatsuki 157 186 211
Occupation/Role	Woodcarver; researcher and weapons developer; chief planner of the Communications Company 3 73 157
Status	Alive 263
First Appearance	Chapter 2, “Nano Core” 2

Power Progression

Stage / Realm / Level	Chapter	Notes
Chakra extraction / Nano Core activation	2	Extracting chakra awakens his unique “cheat,” giving him a route to grow strong enough to control his own fate.
Nano Core training foundation	3	After obtaining the Nano Core at age five and training for over a year, he gains precise bodily control, enhanced digestion, endurance, and senses; his ordinary physical level reaches that of a newly graduated Academy student.
Time Domain: Onefold Speed	26	Develops Time Domain through Nanobug computation and bodily reinforcement, increasing perceived time and taijutsu performance without the Eight Gates’ physical damage.
Time Domain: Double Speed	40	Doubles his speed to kill three Sato-affiliated attackers in rapid succession.
Time Domain: Triple Speed	130	Multiplies his physical functions and perception by more than threefold, allowing him to contest Might Guy in close-quarters combat.
Hashirama Gene implantation	186	Greatly improves chakra quality, recovery speed, and the Nanobugs’ capacity to operate independently.
Ryūchi Cave Sage Mode	236	After repeated failed cultivation attempts, he masters Sage Mode and can enter it instantly.

Background

Samu Kokaze is a human from Earth who transmigrated into the Shinobi World. Initially, he intended to survive quietly by relying on his knowledge of the world’s future and avoiding any disruption to its established course. His outlook changed after he extracted chakra and acquired the Nano Core: he began pursuing enough strength to ensure that his life would never again depend on someone else’s protection or decisions. 2

He received the Nano Core at age five and built an exacting daily routine around it: medicinal baths, woodcarving, chakra refinement, meals, and long-distance running. The Nanobugs’ rapid conversion of food into energy supports his enormous appetite, while his carving work gives him financial independence and a place in Konoha’s community. 3

Although he publicly presents himself as a polite, harmless child and independent woodcarver, he conceals exceptional intelligence, advanced technology, and a calculating approach to danger. Tanaka Keishi recognized this disparity from their first meeting, when Samu produced an extraordinarily detailed miniature of the Great Hero Temple. 39

Appearance

Samu is initially described as a handsome child with long hair, an appearance that others sometimes mistake as feminine. He can alter his outward form through the Nanobugs’ Transformation Technique, including assuming an adult identity as “Zuo Mu.” 13 102 217

• Usually maintains a gentle, youthful appearance to conceal his maturity and strength. 31 39
• Can generate silver, liquid-like material from his body and reshape detached limbs into armor, barriers, or weapons. 80 81
• His combat body may become heavily built and bald after his outer layer is destroyed; his skin temporarily turns black under attack. 81
• Frequently deploys full-body black or silver mechanical armor in major battles. 130 251

Personality

Samu is intensely self-disciplined and fundamentally driven by fear of helplessness. Having experienced the despair of placing his fate in other people’s hands, he rejects laziness, dependence, and being ordered into a role he did not choose. This also explains his reluctance to become a conventional Konoha ninja despite refining chakra and training constantly. 3 16

He is observant, prideful, and strategically manipulative. Samu deliberately acts childish around adults, conceals his intelligence, and uses displays of power to secure political leverage. He prefers preparation, surveillance, and overwhelming advantages over fair fights. 39 153 176

Despite his pragmatism, Samu forms sincere attachments. He openly accepts Naruto as his friend despite village prejudice, treats Ino with lasting affection, and considers Tanaka Yoshikado family. 13 35 43 His morality becomes increasingly compromised as his ambitions expand: he creates genetically engineered monsters, uses enemies’ bodies and memories as research material, and sacrifices large numbers of clones to refine Soul Potion. 119 194

By the end of his conflict with Kaguya, Samu openly describes most people as resources along his path of growth, though he insists he will not attack them without cause. 263

Abilities & Skills

Nano Core and Nanobugs

The Nano Core is the foundation of Samu’s power. Its Nanobugs are distributed throughout his body, granting extreme bodily control, computation, adaptation, and regenerative capacity.

• Rapidly repairs severe wounds, shattered organs, and destroyed tissue; after surviving Daytime Tiger, Samu restores himself before Konoha’s pursuit force reaches him. 133
• Can detach and reconstruct body parts into liquid-metal barriers, weapons, armor, and propulsion systems. 80 81 134
• Converts food, medicine, and chakra into energy, though intensive regeneration and high-output combat can leave him severely depleted. 3 87 134
• Can consume corpses after their chakra and individual will have dissipated, then analyze genetic material, memories, and learned techniques. 6 42 194
• Detects chakra fluctuations and physical abnormalities across a wide area; during an ambush, he identified four enemies within roughly five hundred meters. Zetsu’s concealment remains difficult to track when it does not use chakra. 39 87

Time Domain and Combat Assistance System

Time Domain is Samu’s self-created taijutsu enhancement technique. It combines Nanobug computation with focused reinforcement of his body, slowing his subjective perception of time while amplifying his physical performance. 26

• Unlike the Eight Gates, Time Domain does not inherently damage his body; higher multipliers instead require greater Nanobug activity and better energy reserves. 26
• At double speed, he can overwhelm ordinary ninja before they recognize his movement. 40 41
• At triple speed, he can contend with Might Guy’s advanced taijutsu and respond to attacks most observers cannot follow. 130 131
• The Combat Assistance System analyzes muscle movements, trajectories, speed, force, and possible future actions as combat data. 27 40
• Activating the Combat Assistance System suppresses his emotions and may cause him to choose victory-oriented actions that he would normally reject. 28

Physical Combat and Chakra Control

Samu possesses exceptional taijutsu, raw strength, speed, and chakra control even without armor.

• His early Nano Training Method gives him physical strength approaching newly graduated Rock Lee and allows him to fully release every part of his body’s power. 26
• He admits that Might Guy is superior in conventional taijutsu skill, but compensates through Time Domain, Nanobug enhancement, and near-perfect bodily control. 131
• Can use all five elemental chakra natures without hand seals and elevate ordinary techniques to A-rank levels of destructive power. 153
• Reproduces the principle of the Hyuga Clan’s Rotation through chakra control alone, creating a rapidly spinning chakra barrier. 132
• Resists Mangekyō Sharingan genjutsu through spiritual will and direct control over his chakra rather than relying on the Nano Core. 153
• His chakra reserves become immense after Hashirama Gene implantation; the White Snake Sage compares his chakra to that of the Tailed Beasts. 186 227

Sage Mode

Samu pursued Ryūchi Cave Sage Mode after recognizing that some enemies could not be reliably harmed through ordinary chakra alone. 226 227

• Initially absorbed natural energy too quickly, partially transformed into a snake, and risked petrification. 228
• Hashirama’s genes may be responsible for his abnormal natural-energy absorption rate. 228
• After persistent training under Ice Chi, he learns to enter Sage Mode instantly. 236

Research, Genetics, and Cloning

Samu treats ninjutsu, biology, genetics, and souls as systems to be analyzed and improved.

• Operates an Experimental Base beneath and beyond his Konoha residence, with Unit One serving as his technical adviser and controller for robotic forces. 73 74 102
• Conducts genetic-grafting experiments using Otsutsuki genes and powerful animals, producing mutant creatures stronger than ordinary jōnin. 119
• Implanted himself with Hashirama Gene to improve his chakra, recovery, and physical potential. 186
• Creates clones, but recognizes that clones with developed souls may gain independent thought and cannot be treated as perfectly obedient tools. 194
• Developed Soul Potion from harvested souls. Its refined form improves mental clarity, chakra cultivation, and potential, but retains emotional impurities that create fanatical devotion. 194

Spatial and Energy Technology

Samu’s technology increasingly rivals space-time ninjutsu and godlike chakra techniques.

• Developed a Private Space using principles derived from Kamui, Sealing Jutsu, and Orochimaru’s research. 234
• Uses a Kamui-derived transmission technique and the Virtual Network to relocate across extreme distances or evacuate before unknown attacks land. 250 259
• His Energy Barrier is powered by mass-energy conversion rather than chakra, allowing it to resist Truth-Seeking Orbs and ignore chakra-based neutralization. 251 259
• Uses the Anti-Star Armament in orbit; even minimal output devastated Zuo Mu Yun’s battlefield, while full output could destroy Earth. 260

Equipment / Weapons / Items

• High-Frequency Blade — A Nanobug-formed or chakra-activated vibrating blade capable of cutting thick metal with little resistance. Its operating duration is limited, and ordinary users cannot yet wield it effectively. 73 77
• Electromagnetic Rifle / Railgun — A graphene-based weapon with extreme destructive power. It requires charging time, but Samu can shorten this with chakra and repair firing damage with Nanobugs. 73 133
• Nano Battle Armor — Full-body armor that blocks the Byakugan, absorbs or resists conventional attacks, and can retract into Samu’s body. 130 133
• Energy Barrier — A non-chakra defensive field that withstood Konoha’s combined physical, sealing, mental, and genjutsu-based attacks without visible damage. 251 252
• Bird’s Nest — A battlefield-scale network of vibrating threads that contracts around targets, slices terrain, regenerates after damage, and can later be compressed into a metal sphere. 183
• Sonic Weapon — A transformed arm weapon capable of producing ultrasound and infrasound; it inflicts internal damage, creates mental pressure, and disrupts chakra control. 81
• Anti-Star Armament — An orbital energy weapon powerful enough to erase forests and form a lava-filled crater at minimal output. 260

Relationships

• Yamanaka Ino — Close childhood friend and primary emotional attachment. Samu considers gifts for her, relies on her communication bracelet, and returns to her after major confrontations; Ino remains devoted despite fear over his growing power. 3 176 252
• Uzumaki Naruto — Samu’s openly acknowledged friend. He refuses to abandon Naruto despite Konoha’s prejudice, strengthening Naruto’s attachment to him. 13 35
• Might Guy — Initially rejects Guy’s offer of taijutsu mentorship, but later develops genuine respect through their battle of fists and flesh. Samu acknowledges Guy’s superior conventional taijutsu. 37 131
• Tanaka Yoshikado — Political ally and chosen brother. Samu helps defend the Tanaka Clan, while Yoshikado considers formally adopting him into the family and later serves as his noble intermediary. 35 43 102
• Tanaka Keishi — Yoshikado’s representative, guide, and longtime observer of Samu’s hidden maturity. 31 39 43
• Hiruzen Sarutobi — Protector, political counterpart, and recurring source of tension. Hiruzen initially accepts Samu’s hidden power in exchange for loyalty, later chooses caution when direct opposition becomes too costly. 31 157 187
• Unit One — Samu’s technical adviser, research assistant, weapons engineer, and controller of his robotic forces. 73 74 186
• Orochimaru — Research partner whose knowledge and cooperation accelerate Samu’s projects, including Private Space and Sage Mode training access. 223 226 234
• Ice Chi — Ryūchi Cave instructor who repeatedly saves Samu from fatal natural-energy overload while teaching him Sage Mode. 227 228
• Black Zetsu — Reluctant collaborator coerced through Samu’s control of the Rinnegan and knowledge of Kaguya’s resurrection plan. 186 250
• Uchiha Obito — Major enemy and ideological rival. Their conflict centers on destiny, bloodline, Kamui, deception, and Samu’s refusal to be recruited or controlled. 152 155
• Zuo Mu Yun — Samu’s former clone and self-described “son.” Zuo seeks freedom from his creator, while Samu recognizes his individuality but remains willing to kill him. 259 260

Story Role / Major Arcs

• Early Konoha life — Establishes a woodcarving shop, trains with the Nano Core, befriends Ino and Naruto, and begins hiding his abilities behind a harmless public identity. 2 3 13
• Tanaka Clan conflict — Accepts an escort mission to aid Tanaka Yoshikado, defeats attackers during the journey, and secretly destroys the Sato Clan after its role in the assassination attempt. 35 40 51
• Uchiha massacre — Enters the Uchiha Compound, kills Root operatives, protects Izumi and her sister, acquires Uchiha resources, survives Amaterasu, and escapes Root and Zetsu. 77 80 85 87
• Kara revelation and Konoha confrontation — Publicly reveals his connection to Kara, fights Might Guy and Konoha’s elite, escapes through flight and Rasenshuriken, then later uses his strength against Obito to force Konoha to treat him as an independent power. 130 134 157
• Conflict with Pain and Nagato — Assists Jiraiya and Tsunade after Tanzaku Town’s destruction, tracks Nagato through Nanobugs placed on Pain, defeats Pain’s forces with Bird’s Nest and advanced weaponry, and later retains Nagato’s Rinnegan. 176 180 183 186
• Sage Mode and lunar operations — Cooperates with Orochimaru, trains at Ryūchi Cave, masters Sage Mode, and uses his expanding space-time technology during operations involving the moon. 226 228 236
• Otsutsuki preparations — Begins gathering Tailed Beasts, warns Konoha about the Otsutsuki Clan, compensates clans whose secrets he exposed, and demonstrates that Konoha cannot force him to surrender his technology. 250 251 252
• Clone rebellion and Kaguya conflict — Battles Zuo Mu Yun after the clone becomes the Ten-Tails jinchūriki, defeats him with the Anti-Star Armament, and confronts the revived Kaguya Otsutsuki. 259 260 261 263