Natsu

Biodata

Feature	Details
Name	Uchiha Natsu (夏因)
Alias(es)	Void Demon Tamer; Fifth Emperor of the Sea; Godslayer 104 105 155
Species/Race	Human; Uchiha Clan
Gender	Male
Affiliation	Uchiha Clan; Origin Island; ruler of the West Blue 205 214
Occupation/Role	De facto leader of the Uchiha Clan; host of the Family System 25 205
Status	Active
First Appearance	Chapter 1

Power Progression

Stage / Realm / Level	Chapter	Notes
Sage Body acquired	48	Greatly enhanced his Yang Release, chakra reserves, and ocular power, bringing him closer to a Mangekyō awakening.
Kunwu Sage Mode learned	125	Formed a contract-based Sage Mode unique to the Uchiha Clan through Kunwu, his life-bound demon fox.
Sage Art combat application	159	Combined Sage Mode with Shadow Clones to launch large-scale Sage Art techniques against Kong, Kizaru, Akainu, and Gunko.
Mangekyō Sharingan: Ōkuninushi awakened	168	Healed severe injuries, amplified his physical abilities, and enabled his 750-meter Complete Susanoo.
Awakened autonomous Susanoo	188	His Susanoo acted independently while he was unconscious, using Ōkuninushi to preserve and restore his life.
Orange-grade traits obtained	214	Drew Long-Lived Species, Diligence Overcomes Weakness, and Phantom Night Prison after earning the “Renowned Across the Four Blues” achievement.

Background

Natsu was originally an Elite Jōnin of the Uchiha Clan in the Ninja World. Believing that Konoha’s isolation and suppression of the clan would lead to its destruction, he persuaded Fugaku to abandon compromise and act for survival. He also claimed an ability to glimpse a limited portion of that world’s future. 2 3

Using extraordinary means, Natsu brought the Uchiha Clan across space into the One Piece world. On Origin Island, he built the clan from a vulnerable displaced group into the dominant force of the West Blue, eventually driving the World Government and Marines from the region. 208 214

He later traveled between worlds again, arriving in a different Ninja World to assess its Uchiha survivors and determine whether they were worthy of lasting security under his influence. 251 278

Appearance

Natsu is a young Uchiha usually seen in gray-white robes, though he also wears a black Japanese-style combat robe in battle. His most defining feature is his scarlet Three-Tomoe Sharingan, which can take on a Feihong glow when he exerts high-level chakra or Sage Mode. 77 103 104 164

• Scarlet Three-Tomoe Sharingan capable of inducing immediate fear in weaker opponents. 103
• Carries a ninja tool pouch and formula-marked kunai. 103 76
• Uses dark-gold chakra manifestations for Susanoo armor and weaponry. 107 155
• Was fourteen during the Summit War and fifteen by the Fish-Man Island visit. 160 229

Personality

Natsu is cold, calculating, and ruthlessly pragmatic. He treats threats to the Uchiha Clan as debts to be repaid, using intimidation, torture, and overwhelming force without hesitation against pirates, Cipher Pol, Marines, and Celestial Dragons. 24 105 106 222

Despite his detachment, he values loyalty and repays those who aid the clan. He supported Whitebeard’s effort to rescue Ace because Ace had helped Origin Island and the Whitebeard Pirates had taught the Uchiha about Haki. 133 135

He is openly egoistic and does not frame his rule as charity. Natsu seeks to replace the Celestial Dragons as the world’s true divine authority, maintaining order because a stable population is the foundation of his envisioned eternal Uchiha rule. 1 371

Around Izumi, Sasuke, Kunwu, and Newgate, he shows a quieter and more teasing side. He comforts Izumi after his recovery, trains Sasuke personally, and engages in familiar banter with Whitebeard. 189 225 229

Abilities & Skills

Sharingan and Genjutsu

Natsu possesses the Three-Tomoe Sharingan and later awakened the Mangekyō Sharingan, Ōkuninushi.

• Predicts enemy movements and perceives otherwise difficult-to-read attack trajectories. 76 155
• Can hypnotize or mentally control targets, including forcing auction-house guards aside and making a pirate stab himself. 103 157 236
• Uses ocular pressure to paralyze or terrify weaker opponents with a glance. 103
• Ōkuninushi heals grave injuries and substantially improves his physical performance. 168 188
• His Three-Tomoe Sharingan could not solve the problem of Kizaru’s light-speed movement by itself. 76
• He cannot reliably strike a Logia user such as Kizaru without Haki, allowing Kizaru to evade through elementalization. 80

Susanoo

Natsu manifests a dark-gold Susanoo with both defensive and offensive forms.

• Can form skeletal protection instantly to deflect attacks. 155
• Wields a dark-gold Tang Saber whose blows can split the sea and produce massive shockwaves. 70
• Combines Susanoo with a Wood Golem through Majestic Attire: Susanoo. 78
• Created ten Semi-Complete Susanoo through Wood Clones, forcing back Akainu, Kong, Kizaru, and Gunko. 160
• Unleashed a 750-meter Complete Susanoo that split Marineford in half and killed Gunko. 168
• Possesses an autonomous guardian instinct that activated while Natsu was unconscious. 188

Sage Body and Sage Mode

Natsu’s natural Sage Body gives him exceptional Yang Release, stamina, and ocular potential. His Sage Mode originates from his bond with Kunwu. 48 125

• Enhances his physical durability enough to endure direct exchanges with Steel Bone Kong. 164
• Produces distinctive Feihong-gold markings and greatly strengthens his chakra-based techniques. 159 164
• Supports Sage Art techniques including Dragon Flame Song Technique and Pressure Damage. 159
• Allows his Susanoo to develop a degree of independent consciousness. 189

Flying Thunder God Technique

Natsu uses a space-time technique based on formula-marked kunai and inscribed targets.

• Teleports to marked kunai to pursue targets faster than conventional movement can track. 76 80
• Can mark ships and transport multiple people across long distances. 136 137
• Uses the technique in combination with Body Flicker and swordsmanship for surprise attacks. 164
• Initially admitted that he had not fully mastered the technique. 76

Wood Release

Natsu can create massive wooden constructs and use them for combat, suppression, and area control.

• Summons Wood Golems and Wood Dragons capable of enduring Kizaru’s laser barrages. 77
• Uses Deep Forest Emergence to create a life-draining forest that captures enemies across a wide area. 105
• Uses Hotei Technique to imprison opponents with enormous wooden hands. 105
• Creates Wood Clones, including clones capable of forming Semi-Complete Susanoo. 160
• Deployed Wood Clones to hunt unregistered pirates throughout Fish-Man Island. 238

Fire and Lightning Release

Natsu combines high-output elemental ninjutsu with rapid hand seals and Sharingan-assisted combat awareness.

• Fire Release: Great Fire Extinguishment devastated the Sabaody auction house. 105
• Lightning Release: Lightning Fang was used to eliminate Har’s injured pirate crew. 25
• Chidori and its variants easily defeated CP0 agents and pressured Kizaru. 106 108
• Summoned Kirin against Gunko and later used it in the battle that destroyed Sabaody Island One. 155 108
• Developed Uchiha Style: Purple Flash: Instant Heaven Blade, concentrating Lightning Release along his Tang Saber’s edge. 164

Family System and Traits

Natsu is the host of the Family System, which tracks Uchiha Clan Influence Value, System Points, trait draws, and host-exclusive skills. 25

• Family Traits provide attribute bonuses to all affiliated clan members. 25
• His listed host-exclusive skills include Indra’s Eye, Sage Body, and Kunwu. 213
• His activated traits include Time Traveler, Return to Origin, and Thriving Population. 213
• Phantom Night Prison became part of the Heavenly Awakening Hall as a furnace for tempering Mangekyō Sharingan. 214 221

Equipment / Weapons / Items

• Tang Saber — His primary sword, frequently amplified with dark-gold Susanoo chakra or Lightning Release. 70 164
• Formula-marked kunai — Anchors for the Flying Thunder God Technique. 76 80
• Ninja tool pouch — Carries his combat tools and techniques’ supporting equipment. 103
• Broken Anchor — A transport artifact used to send Natsu, Yaoyu, and Yakumi to another Ninja World. 251
• Heavenly Awakening Hall — A clan facility built on his orders to support Mangekyō awakening and provide emergency reserve power. 221

Relationships

• Uchiha Fugaku — His uncle and a key Uchiha elder; Natsu persuaded him to abandon Konoha and later coordinates clan strategy with him. 3 127 213
• Uchiha Izumi — His closest companion; she wants to fight beside him, while Natsu repeatedly shows concern for her safety and well-being. 190 229 245
• Uchiha Sasuke — His disciple; Natsu chose him for his talent and work ethic, then personally set his training program. 225 251
• Edward Newgate / Whitebeard — His grandfather and ally; Whitebeard taught him about Haki, while Natsu aided him during the effort to save Ace and later agreed to protect Fish-Man Island. 96 135 229 230
• Marco — Whitebeard’s son and Natsu’s cousin; they exchange frequent insults and concern themselves with Newgate’s health. 209 230
• Kunwu — His life-bound demon fox and the source of his unique Uchiha Sage Mode. 125
• Pallas — A contracted Demon-type spirit encountered within Natsu’s spiritual world. 218
• Neptune — King of Fish-Man Island and Whitebeard’s old friend; Natsu became the island’s protector after eliminating pirate threats. 229 238
• Issho — Former admiral who pledged to defend the West Blue after accepting Natsu’s order as the best available protection for the weak. 371
• Gecko Moria — Uchiha vassal who pledged his life to the clan in exchange for power to avenge himself against Kaido. 223
• Donquixote Doflamingo — Forced vassal tasked with supplying the Uchiha Clan and delivering Caesar Clown to Origin Island. 120
• Marshall D. Teach / Blackbeard — A hostile target; Natsu instructed Yashiro to kill Teach if possible or otherwise cause him severe trouble. 398
• Saint Nerona Imu — His principal rival within the World Government; their Summit War clash left Natsu gravely wounded and forced Imu to retreat. 169 179

Story Role / Major Arcs

• Konoha and the Uchiha Exodus — Natsu exposes the danger facing the Uchiha, convinces Fugaku that Konoha cannot be trusted, and leads the clan’s escape to another world. 2 3 208
• West Blue Rise — He establishes himself through ruthless action against pirates, grows the Uchiha Clan on Origin Island, and clashes with Marine forces led by Gion and Kizaru. 24 25 65 70 80
• Sabaody Archipelago Incident — Natsu enters a slave auction to obtain a scientist, defies Saint Charlos, destroys Island One during his renewed fight with Kizaru, and publicly demonstrates that Celestial Dragon authority does not deter him. 103 105 106 108
• Whitebeard Alliance — He learns of Haki from Whitebeard, promises the Uchiha Clan’s support in the rescue of Ace, and offers Whitebeard a Hashirama Cells transplant to restore his vitality. 96 135 136
• Summit War — Natsu battles Gunko, Kizaru, Akainu, Steel Bone Kong, and other top combatants; awakens Ōkuninushi, kills Gunko, defeats Kong, and confronts Imu. 155 160 168 169
• Recovery and Consolidation — After returning from Marineford near death, his autonomous Susanoo and Ōkuninushi restore him; he strengthens Origin Island’s security and expands the clan’s scientific and Mangekyō foundations. 179 188 221
• Fish-Man Island Protection — At Newgate’s request, Natsu suppresses pirate slavers, establishes registration rules, deploys a month-long anti-pirate killing formation, and becomes Fish-Man Island’s new protector. 229 236 238
• World Unification — Natsu reveals his intention to make the Uchiha a divine ruling race and ultimately replace the Celestial Dragons as the world’s sole supreme authority. 205 208 371

Notable Quotes

“I never intended to save the common people.” 371

“I overthrew them not to shatter divine authority, but to replace it.” 371

“Rise alongside my Uchiha Clan! Or, one day in the future, fall beneath the blades of the Uchiha Clan!” 208

Trivia

• Natsu’s Family System initially listed Indra’s Eye as his exclusive skill. 25
• He compared his repeated pattern of growing stronger, being defeated, and growing stronger again to Uchiha Sasuke’s life trajectory. 189
• He dislikes alcohol, despite Newgate repeatedly drinking at his home. 229
• Natsu bought Izumi deep-blue and dark-gold hair ribbons during their trip toward Fish-Man Island. 233