The chapter opens with the title text, "Chapter 525: \"The Sea Floor Prison Impel Down\"." The CP9 cover story continues as "CP9 Independent Action Report Vol. 31: \"Eventually, We Will Return.\"" Lucci and the other CP9 agents are shown together in damaged clothes, some still bandaged or recovering, but they stand like a united group preparing to move forward. The composition gathers Rob Lucci, Kaku, Kalifa, Blueno, Kumadori, Fukurou, Jabra, and others amid Marine markings and city debris, suggesting their independent flight is not over. This is a cover-story page attached to the chapter opening; the manga-hosting footer below the artwork is unrelated boilerplate.
Rob LucciKakuKalifaBluenoKumadoriFukurouJabraCP9
01
In the depths of Impel Down, Garp sits across from the chained Ace and says he would have preferred for Ace and Luffy to have become great Marines, but they did the opposite and turned into rogues. Ace answers only, "Yeah." Garp mentions that he told Luffy about his father and that Luffy was surprised his father was even around. Ace says that matter has nothing to do with either him or Luffy, because they both have the blood of an infamous criminal running through their veins and never would have become Marines. Ace adds that he took the name Portgas to show gratitude to his mother; his good-for-nothing father never gave him anything aside from half his blood. He says he has no memories of that man and owes him nothing.
Monkey D. GarpPortgas D. AceMonkey D. LuffyMonkey D. DragonPortgas D. Rouge
02
Garp looks at Ace and says, "You look like you're about to die, kid..." In memory or echo, Whitebeard extends his hand and asks, "Why don't you take on my name and run wild...? Become my son!!!" Ace's face shifts from exhausted pain to fierce conviction. He tells Garp, "The only father I have... is Whitebeard...!!!" Garp falls silent. The page makes clear that Ace does not define himself by the bloodline Garp mentions, nor by the infamous criminal father whose name he rejects. His chosen bond is with Whitebeard, the man whose name he accepted and whose crew gave him the place he wanted. That emotional answer also explains why Whitebeard's coming war cannot be separated from Ace's identity.
Portgas D. AceMonkey D. GarpWhitebeard
03
At sea, a lookout calls to Vice Admiral Momonga that a pirate ship has been spotted at ten o'clock. The flag looks familiar, and one Marine says he feels like he has seen it before, while another offers to look it up. Momonga decides that if they do not know it, it cannot be anyone important, and orders them to leave it because they are on a tight schedule. The Marine ship carrying Luffy and Hancock is approaching the "Tri-Current," the Marine-use current that ties together the Government's three central points. A map shows Marineford, Impel Down, Enies Lobby, and the ship's current position. Momonga identifies the ship by Marine code G10066 and reports that they will soon enter the current, ordering preparations to open the gate.
Vice Admiral MomongaMarine crewMonkey D. LuffyBoa HancockBuggy Pirates
04
Buggy's ship trails through the Calm Belt, with a giant Sea King rising in the distance. The crew panics: "We... we've made it this far..." and "UWAAH!! Look at that!! A giant Sea King!!" Alvida tells them there is nothing more they can do, and Buggy begs them not to look at him. His followers insist they have to save Captain Buggy, who got imprisoned in Impel Down, and point out that they even paid all that money for his eternal pose. Hancock, watching from the Marine ship, explains the hopeless situation. The sea ahead is the Calm Belt where monsters make their nests, and they cannot do anything in such a little ship. Even if they survive that, the other path is reserved for Marine use, and the Gates of Justice would never open for a pirate ship.
Buggy PiratesAlvidaBoa HancockSea KingBuggy
05
Buggy's followers wail that if they do nothing, Captain Buggy will be executed just like their friend Ace. The lion and crew cry out with sounds like "Garu!! Garuru ruru!!" and insist they cannot even get there. Hancock tells them plainly that Impel Down is the world's greatest prison: impenetrable and inescapable. She says Buggy the Clown's luck as a pirate has run out and tells them to give up. The pirates refuse, shouting that Captain Buggy is not the kind of man who would die there and that they will follow him until the day they find Captain John's treasure island. Their loyalty becomes comic and sincere at once, even as the sea and the prison both make their rescue plan look impossible.
Buggy PiratesAlvidaBoa HancockRichieMohjiCabajiBuggyPortgas D. Ace
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Hancock gives the pirates permission to take their own boat, though she warns she will be keeping the big top. They protest that this is Captain Buggy's ship, but she says she is not sailing to certain death and will not let them waste the ship. If they want a boat to pursue their captain, they can have one, though they will probably die before even glimpsing Impel Down. The pirates thank Captain Buggy for everything he has done until now, promise they will never forget the debt they owe him, and send off a melodramatic farewell: "We hope you have a good death!!" and "Let us meet on the other side!!" Hancock's ship sails away while Buggy's men cry and howl in the distance, left behind in the Calm Belt.
Boa HancockBuggy PiratesAlvidaRichieBuggy
07
The world's greatest prison, the sea floor prison Impel Down, is revealed in a massive underwater view. The prison rises like a huge iron tower from the seabed, surrounded by enormous Sea Kings and grotesque marine beasts. Bubbles and current sounds like "gobo... gobo..." drift around the structure. Along the side panels, prisoners scream from inside: "Wa... haaa...!!" "Buhaah...!!!" "Aaaahhh...!!!" and "Please...!!! Just kill me!!!" The cries make the prison feel less like a building and more like a living hell. The scale of the fortress, the monsters around it, and the sounds of torture inside all confirm Hancock's warning that this is not a place pirates can simply attack or escape.
Impel Down prisonersSea Kings
08
Inside Impel Down, silhouetted guards and jailers move through dripping corridors while prisoners cry from their cells. One prisoner shouts, "Hey, new fish..." and others demand, "What're you doin'... chewin' on yer bread... without a word to the boss here...!?" The rule is that all new fish must give their bread to the boss. When a prisoner resists, the larger inmates beat him, while others yell that this is not like being on death row and beg to be let out. Metal doors slam with sounds like "gach!!" and a stairwell marked L-5 2660 shows how deep and ordered the prison levels are. The page establishes Impel Down as a hierarchy of guards, bosses, suffering inmates, and brutal rules even before Luffy enters.
Impel Down prisonersImpel Down guardscell boss
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The prison imagery continues through monstrous guards, barred rooms, chains, and huge creatures prowling the facility. The soundscape is full of clanging metal, heavy movement, and echoing cries. Finally the Marine ship reaches the front of Impel Down, and a report calls out, "Vice Admiral Momonga!! We've arrived at Impel Down!!!" Narration says it has been four and a half days since the ship departed from Amazon Lily. The ship sits beneath the enormous entrance, dwarfed by the prison's central gate and the surrounding sea. The page completes the journey that began with Luffy leaving Amazon Lily and confirms that he has reached the one place from which pirates almost never return.
Vice Admiral MomongaMarine crewImpel Down guardsImpel Down prisonersMonkey D. LuffyBoa Hancock
10
At the front entrance, Momonga notes that they were slowed a bit by head winds but says there is no matter and orders everyone to hurry: "Get Hancock out here!!" Luffy, still hidden, hears someone call, "Lady Hancock!! We've arrived..." and realizes where they are. He sees the mass of battleships and says there are even more than the Buster Call had. Hancock explains that this is the most dangerous place in the world right now, so of course the Marines have come out in battle formation. Luffy asks, "So this is where Ace is...?" Hancock says Ace is probably far beneath the surface and tells him to quickly get into her clothes. The page shifts from the journey to the infiltration itself, with Luffy's fear and resolve both visible.
Monkey D. LuffyBoa HancockVice Admiral MomongaMarine crewPortgas D. Ace
11
The Calm Belt front entrance of Impel Down opens before the Marine ships, a huge fortified gate surrounded by towers, flags, and anchored warships. Momonga receives praise: "Well done, Vice Admiral Momonga!!!" The Marines on deck erupt in hearts and worship as Hancock appears, saying, "That's the pirate empress...!! She's truly the greatest beauty in the world!" and asking how many millions of volts her beauty power is. They insist there is nothing about her that is not beautiful. The enormous fortress fills the page behind their infatuation, making the contrast sharp: the world's most secure prison opens under military protocol, while its guards and sailors can barely function around Hancock's beauty.
Boa HancockVice Admiral MomongaMarine crewImpel Down guards
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Hancock is irritated by the chattering Marines and wonders what all the noise is. An official asks whether she cares if they are turned to stone, while another begs her not to. The staff confirms her condition: she wanted to see the central figure in the incident, Portgas D. Ace. The vice chief reminds her that even pirates, including Shichibukai, are normally forbidden to enter, and if she wishes to go in she must wear a pair of Kairoseki handcuffs. She will also be given a thorough body search so they can make sure she is not planning to free any prisoners. Hancock silently warns Luffy that they will be searching her soon. Hidden in her clothing, Luffy thinks, "Go on ahead!! I'll take care of it!!" and Hancock agrees: "Very well...!!"
Boa HancockMonkey D. LuffyImpel Down vice chiefImpel Down staffPortgas D. Ace
13
Inside the prison, a guard asks the vice chief about Buggy the Clown, who has disappeared from his cell, and wonders whether he has a Devil Fruit power. Before that can be pursued, a report arrives: "Vice chief!! Vice Admiral Momonga and the Shichibukai, Lady Hancock, have arrived!!" The vice chief says he will be right there. Outside the gate, Marines and guards are again overcome by Hancock's beauty, crying, "Waah... she's... she's so pretty... Come on, open the gate!!!" The massive door opens for Hancock and Salome while narration says that until Ace's public execution, thirty-three hours remain. Hancock thinks, "Here we go...!!! Luffy!!" as she steps into Impel Down, beginning the real infiltration.
Boa HancockMonkey D. LuffySalomeVice Admiral MomongaImpel Down vice chiefImpel Down guardsBuggyPortgas D. Ace
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End of chapter15 pages
Discussion
p7
The small boat carrying crew is attacked and destroyed by a Sea King.
p8Scene takes place in Impel Down stone corridors and stairways.
p8Gate L-5 2660 is destroyed during the attack.
p8Minotaurus is actively pursuing and attacking prisoners.
p9Ship has traveled four and a half days from Amazon Lily.
p9Vessel is arriving at Impel Down through dangerous underwater passage.
p10Current location is the deck of a Marine vessel approaching Impel Down.
p10Hancock is present on the ship with Momonga and Luffy.
p11Impel Down entrance is shown with heavy Marine warship escort.
p11Black flag with jolly roger and kanji ten is displayed at the gate.
p12Scene takes place inside Impel Down stone corridors.
p12Hancock is accompanied by Vice Admiral Momonga.
p12Luffy is concealed beneath Hancock's cloak.
p12Guards discuss restrictions on freeing prisoners.
p13Thirty-three hours remain until Ace's public execution.
p13Buggy is reported missing from his cell.
p13Hancock enters Impel Down riding Salome.
p13Luffy remains hidden under Hancock's cloak during entry.
What is said, page by page
p0Chapter title page announces Chapter 525 THE SEA FLOOR PRISON IMPEL DOWN with dramatic quote.
p0Bottom caption states CP9 report message EVENTUALLY WE WILL RETURN in formal tone.
p1Voice tells Ace about informing Luffy of his father with calm tone.
p1Ace responds YEAH with surprise and tension.
p1Voice notes Luffy was surprised his father was around.
p1Whitebeard states he wanted Ace and Luffy to become Marines but they became rogues with stern disappointment.
p1Ace replies that family blood does not matter and he and Luffy share infamous criminal blood so could never be Marines with defiant mood.
p1Ace acknowledges Whitebeard as his only father with emotional intensity.
p2Ace reacts with shock to Whitebeard's words.
p2Whitebeard tells Ace he looks like he is about to die with blunt observation.
p2Whitebeard offers to make Ace his son and let him take his name to run wild with commanding intent.
p2Ace declares Whitebeard is the only father he has with tearful fierce grin.
p3Marine sailor asks whose ship it is with surprise.
p3Another sailor says he will look up the flag immediately.
p3Third sailor notes the flag looks familiar.
p3Alarm reports pirate ship spotted at ten o'clock.
p3Momonga orders to leave the unknown ship because they are on tight schedule with dismissive calm.
p4Crew member tells Alvida nothing more can be done against the Sea King, voice full of despair.
p4Crew member states they have come far already, tone resigned.
p4Panicked crew shouts not to look at them while facing the Sea King.
p4Crew yells in terror at the giant Sea King appearance.
p4Lion-mane crewman insists they must rescue imprisoned Captain Buggy from Impel Down.
p4Alvida notes the other sea path is reserved for Marines only.
p4Alvida states the gates of justice would never open for a pirate ship.
p4Alvida points out the calm belt ahead where Sea Kings nest.
p5Crewman yells that Captain Buggy will be executed if nothing is done.
p5Lion-mane crewman roars in frustration and anger.
p5Crewman insists they cannot reach Impel Down.
p5Crew references Ace's similar fate with despair.
p5Alvida tells the crew to give up on rescuing Buggy.
p5Alvida states Buggy's luck has run out as a pirate.
p5Alvida declares Impel Down is impenetrable and inescapable.
p6Crew reacts with shock that Alvida is keeping the Big Top ship.
p6Alvida allows crew to take a boat and leave.
p6Alvida refuses to sail to certain death or waste the ship.
p6Crew admits they do not see Buggy aboard.
p6Crew warns others will likely die before reaching Impel Down.
p6Departing crew shouts farewell and thanks to Alvida.
p6Crew vows to follow Captain Buggy anyway.
p7Crew screams and coughs while being attacked by Sea King.
p7Crew begs the Sea King to kill them quickly.
p7Narration identifies the structure as Impel Down sea floor prison.
p8Striped inmates confront new arrival demanding bread share for the boss with threatening intent.
p8Prisoners scream in panic that they are not on death row and beg to be released.
p8Inmates enforce rule that all new fish must give bread to the boss.
p9Marine announces arrival at Impel Down with urgent tone.
p9Crew calls out Vice Admiral Momonga upon reaching the destination.
p10Momonga states they must hurry despite head wind delay.
p10Marine reports arrival and calls for Hancock to come out.
p10Hancock notes the dangerous location and expected battle formation.
p10Luffy reacts with confusion about the surroundings and plans to proceed.
p10Hancock comments that Ace is probably far beneath the surface.
p11Marines express shock and admiration at Hancock's beauty with exaggerated reactions.
p11Crew praises Momonga for bringing the Pirate Empress.
p12Guard nervously asks Hancock about seeing Portgas D. Ace as central incident figure.
p12Another guard pleads with Hancock not to proceed with her request.
p12Third guard worries about possible petrification of personnel.
p12Hancock internally expresses irritation at excessive guard chatter.
p12Momonga reminds Hancock that pirates and Shichibukai require body search and seastone handcuffs inside Impel Down.
p12Hancock agrees to the search conditions with calm resolve.
p12Luffy enthusiastically accepts the plan to move forward while hidden.
p13Guards shout in admiration and demand the gate be opened for Hancock.
p13Announcement confirms Vice Admiral Momonga and Shichibukai Lady Hancock have arrived.
p13Staff questions whether Buggy disappeared using Devil Fruit power.
p13Hancock tells Luffy they are proceeding onward.
p13Luffy responds with excitement about moving ahead.
One Piece Chapter 525: The Sea Floor Prison Impel Down