Sengoku's early life was shrouded in mystery as not much was known about his background, except that he hailed from the South Blue. At the age of 23, he made a significant decision to join the Marines, alongside other notable figures like Monkey D. Garp and Tsuru.
As the years passed, Sengoku steadily rose through the ranks within the Marines, showcasing his exceptional skill and dedication. Eventually, he achieved the prestigious rank of Admiral, becoming one of the highest-ranking officers before the Great Age of Pirates.
Around 40 years ago, Sengoku found himself entangled in a momentous event known as the Rocks Pirates incident. This incident had far-reaching implications and involved some of the most notorious pirates and Marines of that time.
Around 31 years ago, Sengoku's life took a different turn when he encountered an 8-year-old boy named Donquixote Rosinante. The young boy was grieving the loss of his father, who had been killed by his own brother, Doflamingo. Sengoku saw potential in Rosinante and took him under his wing, treating him as a surrogate son. As Rosinante grew older, he eventually joined the Marines as well.
About 27 years prior to the current events of the storyline, the Marines received intel about a confrontation between two legendary figures – the fearsome pirate Shiki and the renowned Gol D. Roger. The situation demanded immediate action, and Sengoku, along with his trusted comrade Garp and other high-ranking Marines, were dispatched to handle the situation.
However, nature had other plans, and a powerful storm during the battle resulted in the destruction of half of Shiki's fleet. Three years later, a pivotal moment in history occurred when Gol D. Roger, the Pirate King, surrendered himself to the Marines.
His impending execution was announced, shaking the world to its core. As the execution date neared, Shiki, still seeking vengeance, launched a daring attack on Marineford. Sengoku and Garp united their forces to face the formidable pirate.
The ensuing battle was fierce, leaving Marineford heavily damaged. Nevertheless, their combined strength prevailed, and they managed to defeat Shiki, who was subsequently imprisoned in the feared underwater prison, Impel Down.
Ohara Incident
Sengoku, a prominent figure in the Marines, rose through the ranks and became an Admiral before the Great Age of Pirates. One significant event he was involved in was the Buster Call mission on Ohara.
He received orders from the World Government to carry out this secret mission, which involved sending a powerful attack to obliterate Ohara, a land of scholars interested in history. Despite objections from Vice Admiral Jaguar D. Saul, who pleaded that the Oharans were harmless scholars, Sengoku proceeded with the mission.
During this time, a young girl named Nico Robin managed to escape the devastation caused by the Buster Call. Sengoku and other high-ranking officials considered her a threat and put a substantial bounty on her head to facilitate her capture.
Pursuit of the Donquixote Pirates
Sengoku had a close relationship with Donquixote Rosinante, whom he met 31 years before the current storyline. Rosinante was grieving the loss of his father and was taken under Sengoku's wing, with Sengoku treating him as a son. Rosinante eventually joined the Marines and became a commander.
Sengoku assigned Rosinante a mission to spy on the Donquixote Pirates, led by his elder brother, Donquixote Doflamingo, ensuring no children got involved with the dangerous pirate crew. Tragically, Rosinante's mission ended in his death, leaving Sengoku devastated by the loss of the young Marine he had come to care for deeply.
After Rosinante's passing, Sengoku encountered X Drake, who had fled from his father's pirate crew. He took Drake in and treated him like a son, similarly to how he had done with Rosinante.
Jaya Arc
After Crocodile was defeated by Monkey D. Luffy and stripped of his rank as a Warlord of the Sea, Sengoku was called in to discuss Crocodile's replacement in Mary Geoise. During the meeting, he arrived late and found Doflamingo messing around with some Marine officials. He told Doflamingo to stop and then started the meeting.
Later, Laffitte, a newcomer, suggested Marshall D. Teach (Blackbeard) as a candidate to replace Crocodile. Sengoku wasn't familiar with Teach and questioned his suitability, but Laffitte assured them that they had a plan to make Teach famous. Laffitte left, introducing his crew, the Blackbeard Pirates.
Post-Enies Lobby Arc
Following the destruction of Enies Lobby, Sengoku learned from Garp that Luffy was his grandson. He was annoyed that Garp hadn't shared this information earlier and ordered him to go back to Water 7 to capture Luffy.
Thriller Bark Arc
After Gecko Moria's defeat, Sengoku was in Mary Geoise with Garp and Bartholomew Kuma. He was angry that Kuma didn't eliminate the Straw Hat Pirates and return with Luffy's head as proof, as he had issued the order to terminate the pirate crew.
He also voiced concern about the Straw Hat Pirates' increasing proximity to Marine Headquarters and was irritated when Garp seemed more interested in tea and crackers than his grandson's progress.
One Piece Film: Strong World (Non-Canon)
When the notorious pirate Shiki returned after a 20-year disappearance, he attacked Marineford, showcasing his powers by levitating and hurling fleets of ships at the island as a warning to the Marines. Sengoku was surprised that Shiki was still alive after all this time. However, days later, Shiki was surprisingly defeated by Luffy, leading Sengoku to lament that the Marines were useless and had been saved by pirates.
Sabaody Archipelago Arc
Sengoku was greatly irritated by Luffy's audacious attack on World Noble Saint Charlos and for "taking hostage" his father and sister. Admiral Kizaru offered to handle the problem personally, and Sengoku gave him permission to go to Sabaody Archipelago to deal with the situation.
Amazon Lily Arc
During that time, Sengoku received a report that Vice Admiral Momonga managed to "convince" Pirate Empress Boa Hancock to follow the government's summons. He acknowledged Hancock's strength but was troubled by Jinbe's refusal to cooperate with the Marines and his willingness to fight them instead of Whitebeard.
Meanwhile, Admiral Kizaru captured many pirates at Sabaody, sending 500 to Impel Down. Sengoku was annoyed and focused only on Whitebeard. He ignored an incident with Saint Charlos and got upset that Garp had already left for Impel Down. Meanwhile, Whitebeard's ship, the Moby Dick, destroyed 23 patrol ships, leading to extreme caution being ordered at Impel Down.
Impel Down Arc
Sengoku was displeased to learn that Luffy had broken into Impel Down to rescue Portgas D. Ace, especially when they were preparing for war against Whitebeard. Garp found it amusing that his grandson would go to such lengths to save Ace.
Sengoku was angry, stating that nobody had attempted such a daring act in Impel Down's history, and he was annoyed that it was Garp's grandson who did it. He expressed frustration with Garp but acknowledged that his position as the "Hero of the Marines" prevented him from taking personal responsibility for his family's actions.
As the situation grew more intense, Blackbeard and his crew stole a Marine ship and broke into Impel Down, leaving Sengoku distraught upon hearing the news, further escalating the challenges faced by the Marines.
Marineford Arc
Three hours before Ace's execution, Sengoku told Garp that he would reveal Ace's true identity to the world - that he is the son of Gol D. Roger, the Pirate King. Garp agreed to this. Sengoku informed his subordinates about Ace's true parentage and then Whitebeard and his allies arrived at Marineford.
Whitebeard, who had not seen Sengoku in decades, began attacking. Sengoku revealed that Whitebeard has a powerful ability called the Gura Gura no Mi, which can destroy the world. The war between the Marines and pirates began. Sengoku remained determined to execute Ace as planned.
Luffy, Ace's adoptive brother, entered the war and Jinbe resigned from the Warlord of the Sea title, angering Sengoku. Sengoku agreed to execute all the Impel Down escapees and revealed that Luffy is not only Ace's adoptive brother but also the son of the Revolutionary Dragon, making him a dangerous person in the future.
Whitebeard split his forces, and Sengoku realized he had sensed the Fleet Admiral's trickery but believed it wouldn't save him. Sengoku ordered Akainu to deceive one of Whitebeard's allies, Squard, causing chaos among the pirates.
Soon after, an army of Pacifista appeared, and Sengoku ordered them to attack the pirates, even though they were not all in the bay as planned. In the meantime, Buggy interrupted the video broadcast, delaying Ace's execution.
During the battle, Sengoku's plan to deceive Squard worked as expected. The Pacifistas attacked everyone in the bay except the Whitebeard Pirates. Squard, fueled by his hatred towards Roger and Ace, believed Akainu's lies and attacked Whitebeard, stabbing him. However, Buggy's Den Den Mushi broadcasted everything to the world.
When Whitebeard entered the battle and caused earthquakes, Sengoku ordered the raising of a siege wall, but it was hindered by Little Oars Jr.'s body. He then instructed Akainu to melt the ice beneath the pirates. Luffy broke through the wall and stood before the execution platform.
Ace's execution began, but Crocodile attacked the executioners unexpectedly. Later, the Whitebeard Pirates breached the wall, and Sengoku prepared to join the fight.
When Marco flew towards the execution platform, Garp attacked him without orders from Sengoku. Ace was moved to tears by everyone's sacrifices for him.
After Marco and Jozu were severely injured, Sengoku ordered the Marines to focus on Whitebeard. Whitebeard refused to die until he secured a future for his "children." Sengoku ordered another pair of executioners to proceed with Ace's execution, but Luffy used Haoshoku Haki to knock them out, surprising Sengoku.
When Luffy used Inazuma's powers to reach the execution platform, Sengoku was upset that Garp hesitated and let his grandson pass through. He even mentioned that he understood the feeling as he too was a father. Angry at Luffy's attempt to save Ace, Sengoku transformed into his giant form and tried to carry out the execution himself.
During their clash, Luffy activated Gear 3, increasing his body size, surprising Sengoku. However, Luffy's attack was stopped by Mr. 3's defense. Sengoku's punch destroyed the execution platform, and he fell to the ground with the pirates.
After Ace was freed, Sengoku felt ashamed for allowing Ace to escape in his presence. Meanwhile, Whitebeard was wreaking havoc on Marineford, and Sengoku saw him as the immediate threat.
When Akainu killed Ace, Garp wanted revenge, but Sengoku stopped him from acting on his desires by pinning him down to the ground. Sengoku was shocked at Whitebeard's immense power even after sustaining serious injuries.
Sengoku's fury grew when the Blackbeard Pirates arrived, revealing that they wanted the Warlord of the Sea title to recruit Impel Down prisoners. Whitebeard's final words about the Will of D. frightened Sengoku, and he was furious that Whitebeard revealed the existence of One Piece to the world.
After Whitebeard's death, Sengoku witnessed Blackbeard somehow stealing Whitebeard's Gura Gura no Mi powers and using them to attack Marineford.
When Blackbeard threatened to sink Marineford and declared this age as his own, Sengoku transformed into his Buddha form and sent a powerful shockwave, scattering the Blackbeard Pirates. He warned Blackbeard not to spout nonsense about destroying the symbol of justice and prepared to defend the pride of the Marines.
Blackbeard taunted Sengoku and Garp, saying he would end their age just as he did with Whitebeard.
The battle came to a halt when Koby screamed for everyone to stop. Sengoku listened to Koby's speech and then witnessed Shanks' arrival. Shanks stopped Akainu from harming Koby and declared his intention to end the war.
After a brief conversation with Shanks, Sengoku allowed him to take the bodies of Ace and Whitebeard. He took full responsibility for letting all the pirates go and ordered the Marines to tend to the wounded, declaring that the war was over.
Post-War Arc
After the war's aftermath, Sengoku was sitting on a pile of rubble, covered in bandages from his injuries during the battle. He learned about Magellan's critical condition and forbade him from taking responsibility for the prison breakouts or committing suicide.
Sengoku was informed that other Level 6 prisoners from Impel Down had escaped, not just the ones Blackbeard took. He became angry at the World Government for trying to keep this information quiet to save face.
Two weeks later, Sengoku approached Commander-in-Chief Kong and resigned from his position as fleet admiral. Kong accepted his decision and assured him that his and Garp's records would remain untainted for recruiting new Marines. Sengoku recommended Aokiji as his successor.
One Piece Film: Z (Non-Canon)
After the destruction of Secon Island by former Admiral Z, Sengoku, and Garp reflected on their tragic past and the danger innocent civilians faced. Garp explained Z's backstory to Koby and Helmeppo while Sengoku silently remembered his old friend.
Dressrosa Arc
Following Doflamingo's defeat, Sengoku discussed the news with Tsuru while snacking on okaki.
Three days later, Sengoku and Tsuru arrived at Dressrosa, where they met Admiral Fujitora. Sengoku was relieved not to be the Fleet Admiral anymore. They encountered Princess Mansherry of the Tontatta Tribe, who had healing abilities. Sengoku offered to assist in healing the injured.
Later, Sengoku had a private conversation with Law about Rosinante near the eastern port. Law revealed he was a "D." and asked about it, surprising Sengoku. Sengoku advised Law to live his life as Rosinante wanted.
When Fujitora allowed Luffy and his allies to escape, Sengoku overheard him thanking Luffy. After leaving Dressrosa, Sengoku and the Marines escorted Doflamingo. Sengoku asked Fujitora to apologize to Sakazuki, but he refused. Later, Jack, a subordinate of Kaido, attacked the Marine convoy but was defeated.
Levely Arc
Sengoku returned to New Marineford and had a humorous exchange with Sakazuki about his difficult job as Fleet Admiral.
One Piece: Stampede (Non-Canon)
Outside the Marine Headquarters, Garp met with Sengoku, who began telling him about Douglas Bullet's past.
Wano Country Arc
After the abolishment of the Warlords of the Sea system and learning about Big Mom and Kaido's alliance, Sengoku participated in a meeting with Marine officers. He talked about the Rocks Pirates and their captain, Rocks D. Xebec, and explained the God Valley Incident and Garp's history with Roger facing the Rocks Pirates.
Sakazuki entered the meeting and discussed the Marines' decision to leave Wano Country alone due to their lack of manpower to deal with both Big Mom and Kaido. Sengoku and Sakazuki also discussed Kozuki Oden and his connections to the Four Emperors.
Egghead Arc
Some days later, Sengoku and Tsuru read about T-Bone's murder by an unknown assassin, who was motivated by a bounty reward from the Cross Guild for eliminating Marines. They express concern about the threats the Navy faces from both pirates and common people.
