Chapters · Summit War › Impel Down

Chapter 525: The Underwater Prison Impel Down

Arc: Impel Down · Saga: Summit War · Released:

Summary

Deep in Impel Down, Vice Admiral Garp visits a chained, beaten Ace. He tells Ace he spoke to Luffy about his father, and laments that he wanted both grandsons to be great Navy men; Ace answers that the “world-class criminal blood” in their veins meant the Navy was never an option. Ace disowns his “good-for-nothing father” — he owes the name Portgas only to his mother — and, recalling the day Whitebeard offered “Be my son… go wreak havoc on these seas,” declares Whitebeard “is my only father.” Out at sea, Vice Admiral Momonga (Navy Code G-1, 00660) rides the government “tub current” — the route linking Marineford, Impel Down and Enies Lobby — to deliver Hancock and her secret stowaway, Luffy, to the prison. The Buggy Pirates, prodded offshore by Alvida, briefly weigh storming the Calm Belt to save the soon-to-be-executed Buggy, but abandon the rescue when a crewmate seizes the ship Big Top. The chapter tours Impel Down’s horrors — starving and tortured inmates, a cell-block “boss,” a roaming beast-jailer — before the battleship reaches the main gate. Hancock, who has been granted a one-time exception to dock here, learns she must be searched and cuffed in sea-prism stone; Luffy, hidden under her cape, urges her on. As the gates open, a guard reports Buggy has escaped his cell — and the clock reads thirty-three hours until Ace’s execution.

New reveals

• Impel Down shown on-page for the first time (p. 8, 14): a giant underwater tower-prison wreathed in Neptunians, with a fortress main entrance above the surface in the Calm Belt. Captioned “the world’s most secure underwater prison.”
• The WG “tub current” connects the government’s three central facilities — Marineford, Impel Down, Enies Lobby — and the battleship rides it in through the gates (p. 4, with map).
• Momonga’s full designation: Navy Code G-1, 00660 (p. 4).
• Warlord entry protocol: pirates, even Warlords, are normally barred from the prison; Hancock must be searched and wear sea-prism cuffs to enter (p. 16).
• Execution clock: thirty-three hours until Ace’s execution (p. 17).
• Ace’s parentage beat: disowns his unnamed “good-for-nothing father,” keeps mother’s name Portgas, names Whitebeard “my only father” (pp. 2-3).
• Buggy has escaped his Impel Down cell and “has Devil Fruit powers” — reported to the Under Warden as the gates open (p. 17).
• Buggy Pirates / Alvida abandon a rescue when a crewmate commandeers Big Top; mention Captain John’s long-lost treasure island (pp. 5-7).

Foreshadowing seeds planted

Payoffs (seeds from earlier chapters that resolve here)

Mentions / appearances

Garp · Ace (Portgas D. Ace) · Luffy · Hancock · Momonga (Vice Admiral Momonga, Navy Code G-1 00660) · Whitebeard (flashback) · Dragon (referenced, not named — “Luffy’s father”) · Buggy (off-page; escaped cell reported) · Alvida · Mohji · Cabaji · Richie · Captain John (referenced — “long-lost treasure island”) · Marines · Buggy Pirates · Whitebeard Pirates (flashback) · Kuja Pirates (Hancock’s flag) · Straw Hat Pirates · CP9 (cover) · Kuja · Impel Down · Seven Warlords of the Sea · Sea-Prism Stone · Gates of Justice · Buster Call (referenced) · Sea Kings (Neptunians) · Bara Bara no Mi (Buggy’s powers, referenced) · Locations: Calm Belt · Marineford · Enies Lobby · Marine Headquarters · Amazon Lily (departure point, referenced)

Notable panels

• Page 1 — Title splash “Chapter 525: THE UNDERWATER PRISON IMPEL DOWN.” Cover story: CP9’s Independent Report, Vol. 31 — “We Will Return One Day” (running CP9 cover serial; the masked/casual CP9 group is shown).
• Pages 2-3 — Garp’s cell visit: Ace disowns his father, keeps the name Portgas (mother’s), and the Whitebeard “Be my son! …go wreak havoc on these seas!” flashback — “Whitebeard… is my only father!!” Garp goes silent.
• Page 4 — A passing pirate ship dismissed as “bit players”; Momonga (Navy Code G-1, 00660) orders the gates opened to “ride the current in.” Map of the tub current linking Marineford / Impel Down / Enies Lobby.
• Pages 5-7 — Buggy Pirates offshore with Alvida; they balk at the Calm Belt’s sea monsters, a crewmate takes Big Top, and the crew tearfully bids Buggy farewell (Captain John’s treasure island name-checked).
• Pages 8-12 — Impel Down’s interior horrors: tortured/starving inmates, a shadowed cell-block “boss” demanding the newbie’s bread, a charging bull-headed beast-jailer down the stairs (cell L-5 2660), and the prison exterior swarming with Neptunians.
• Page 12 — “Four days have passed since they sailed from the Maiden Island, Amazon Lily”; the battleship reaches Impel Down.
• Page 13 — Luffy reacts: “Ace is in there? There are more battleships here than in a Buster Call!”; Hancock tells him to get under her cape.
• Page 14 — Full-page establishing splash: “Main Entrance, Impel Down Prison, The Calm Belt” — the fortress gate (mirror-worthy).
• Page 15 — Hancock’s Kuja flag raised; Marines gush over the Pirate Empress (“How many million volts is her beauty?!”).
• Page 16 — Momonga lays out the search-and-sea-prism-cuff condition; Luffy (under cape) says “Keep going! I’ll think of something.” Editor’s note: text on Momonga’s coat reads “JUSTICE.”
• Page 17 — Gates open; a guard reports Buggy has escaped his cell and has Devil Fruit powers; “Let’s go, Luffy!” / “Thirty-three hours… until Ace’s execution.”

Open questions raised

• Who is Ace’s “good-for-nothing father,” the man whose name he refuses while keeping his mother’s (Portgas)?
• How will Luffy navigate Impel Down hidden under Hancock’s cape once she’s searched and cuffed?
• What set Buggy loose inside the prison, and will he and Luffy cross paths?
• What lies on the prison’s lower levels past the beast-jailers and cell blocks?