Sengoku
I'm in One Piece, but the System Wants Me to Learn Ninjutsu?Biodata
| Feature | Value |
|---|---|
| Name | Sengoku (战国) |
| Gender | Male |
| Affiliation | Marines; Marine Headquarters |
| Occupation/Role | Fleet Admiral; supreme commander of the Marines 11 |
| First Appearance | Chapter 8 |
History
Feng Lei’s Special Recruit assessment
Garp recommended his disciple Feng Lei for the Marine Academy’s Special Recruit program, which Sengoku described as reserved for candidates with Admiral potential. Sengoku granted Feng Lei an admission slot but required him to pass the assessment 8 9.
After reviewing Feng Lei’s record and judging his strength with Observation Haki, Sengoku initially proposed that he start as an ordinary student. Feng Lei challenged the decision and accepted an assessment requiring him to capture a pirate with a bounty exceeding 100 million Beli alone. Sengoku sent Kizaru to take him to the New World and provided a Den Den Mushi for reporting the result 12 15.
When Sengoku learned that Feng Lei was targeting Charlotte Cracker, he ordered Momonga and Garp to intervene, fearing a conflict with the Big Mom Pirates before the planned war against Whitebeard. Feng Lei killed Cracker before they could stop him. Astonished, Sengoku ordered Momonga to protect him and later approved his Special Recruit status, equivalent in standing to an Admiral Candidate but without actual authority 19 20 26 29.
The Five Elders and Feng Lei’s promotions
The Five Elders ordered Sengoku to transfer Feng Lei to Mary Geoise, but Feng Lei refused and said he would leave the Marines rather than obey. Angry that the Elders had acted before informing him, Sengoku proposed keeping Feng Lei away from Headquarters and sending him to the front lines 33 34.
Sengoku later assigned Feng Lei to summon Boa Hancock, intending to use the achievement to justify making him a Vice Admiral and placing him in command of a branch, beyond easy transfer by the Elders. After Feng Lei secured Hancock’s cooperation, Sengoku appointed him a Marine Headquarters Vice Admiral, also citing his other achievements 45 51 58.
Following Luffy’s attack on a Celestial Dragon at Sabaody, Sengoku put Feng Lei in command of a force sent to arrest the Straw Hat Pirates. Feng Lei captured Luffy, the other members of the Worst Generation, and Dark King Rayleigh. Sengoku agreed with Garp’s proposal to make him the Marines’ fourth Admiral and formally appointed him under the codename White Dragon 60 80 81 86.
War against Whitebeard
Sengoku planned to publicly execute Ace as bait to draw Whitebeard into battle, intending to destroy the Whitebeard Pirates and deter other pirates. He refused Garp’s request to spare Ace and ordered the execution to be broadcast worldwide 29 58 87.
During the strategy meeting, Feng Lei identified a weakness in Sengoku’s defenses: Whitebeard could approach the inner bay underwater. Sengoku adopted his proposed countermeasure, ordering Aokiji to freeze the sea when a decoy appeared. The plan forced Whitebeard’s ships to surface at the edge of the bay 87 90.
As the battle continued, Sengoku witnessed Feng Lei devastate the pirate force. When Luffy and other Impel Down escapees arrived, Sengoku revealed Luffy’s connection to Dragon and ordered the harbor’s defensive walls raised around the pirates 105 106.
Personality
Sengoku values institutional fairness and the Marines’ reputation. He worried that Feng Lei’s failure as a Special Recruit would reflect poorly on both the recruit and Garp, and refused to lower the assessment standard despite Garp’s objections 12.
He is protective of promising Marine talent, though he initially underestimated Feng Lei. Once convinced of Feng Lei’s strength, he sought ways to retain him despite pressure from the Five Elders 26 34 45.
Sengoku is also ambitious about his legacy: approaching retirement, he hoped a decisive victory over Whitebeard would earn him a distinguished record. He nevertheless accepted Feng Lei’s criticism of his Marineford defenses and revised the plan 26 87.
Abilities & Skills
Observation Haki
Sengoku used Observation Haki when he first met Feng Lei, although his assessment led him to underestimate the recruit’s strength 12.
Military strategy
Sengoku organized the defenses and assembled Marine forces for the confrontation with Whitebeard 80 87.
- His original Marineford deployment included warships, walls that could rise from the seabed, and troops stationed in the plaza 87.
- After Feng Lei identified the risk of an underwater approach, Sengoku incorporated Aokiji’s ice into the defense 87 90.
Relationships
- Garp — Old friend and Marine comrade. Sengoku often clashes with him over his behavior and family, but trusted him enough to grant Feng Lei an assessment 9 29 60.
- Feng Lei — Garp’s disciple and a Marine recruit Sengoku initially underestimated. Sengoku later protected his career from the Five Elders’ pressure and appointed him the fourth Admiral 12 26 45 86.
- Victoria — Sengoku’s assistant, who conveys his orders, reports developments, and prepares appointment paperwork 11 20 58.
- Zephyr — Marine chief instructor. He and Sengoku discussed how to prevent Feng Lei from leaving the Marines after refusing the Five Elders 34.
- Five Elders — World Government authorities who ordered Sengoku to transfer Feng Lei to Mary Geoise; Sengoku sought ways to keep Feng Lei in the Marines 33 34 45.
- Whitebeard — Sengoku’s intended target in the Marineford operation; he used Ace’s execution to draw Whitebeard into battle 29.