One Piece

One Piece (1999 – ...)

1999 • 23 seasons • Action & Adventure, Comedy • TV-14

On August 7, 2026

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77 Popularity Score

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Episode 439 — Luffy's Treatment Begins! Ivan-san's Miraculous Power!

Season 13 • One Piece

Released: 2010-02-21 • Action & Adventure/Comedy/Animation

79%

User score

Bon is overjoyed to hear that Luffy is still alive, but his happiness quickly turns to shock when he learns that Ivan’s agonizingly painful “Healing Hormones” will cost the rubber-man ten years of his life!

Episodes

Episode 422
A Deadly Infiltration! The Underwater Prison Impel Down
2009-10-18

Episode 423
A Reunion in Hell?! The Man Who Ate the Chop-Chop Fruit!
2009-10-25

Episode 424
Break Through the Crimson Hell! Buggy's Chaos-Inducing Plan
2009-11-01

Episode 425
The Strongest Man in the Prison! Poison Man Magellan Appears
2009-11-08

Episode 426
A Special Presentation Related to the Movie! A Gold Lion's Ambition on the Move
2009-11-15

Episode 427
A Special Presentation Related to the Movie! Little East Blue in Danger
2009-11-22

Episode 428
A Special Presentation Related to the Movie! The Fierce Onslaught of the Amigo Pirates
2009-11-29

Episode 429
A Special Presentation Related to the Movie! The Battle Is On! Luffy vs. Largo
2009-12-06

Episode 430
A Warlord in Prison! Jimbei, the Honorable Pirate
2009-12-13

Episode 431
Chief Guard Saldeath's Trap! Level 3 - Starvation Hell
2009-12-20

Episode 432
The Unleashed Swan! A Reunion with Bon Clay
2009-12-27

Episode 433
Warden Magellan's Strategy! Straw Hat Entrapment Completed!
2010-01-10

Episode 434
All Forces Have Gathered! The Battle on Level 4, the Burning Heat Hell!
2010-01-17

Episode 435
Mighty Magellan! Bon Clay Bugs Out
2010-01-24

Episode 436
The Showdown Has Come! Luffy's Desperate Last Attack!
2010-01-31

Episode 437
For His Friend! Bon Clay Goes to the Deadly Rescue!
2010-02-07

Episode 438
A Paradise in Hell! Impel Down Level 5.5!
2010-02-14

Episode 439
Luffy's Treatment Begins! Ivan-san's Miraculous Power!
2010-02-21

Episode 440
Believe in Miracles! Bon Clay's Cries from the Heart
2010-02-28

Episode 441
Luffy's Back! Ivan-san Begins the Breakout Plan!
2010-03-07

Episode 442
Ace's Convoy Begins! Battle on the Lowest Floor, Level 6!
2010-03-14

Episode 443
The Ultimate Team Has Formed! Shaking Impel Down!
2010-03-21

Episode 444
Even More Chaos! Here Comes Blackbeard Teech!
2010-03-28

Episode 445
The Dangerous Encounter! Blackbeard and Shiryu of the Rain!
2010-04-04

Episode 446
No Price Too High! Serious Hannyabal!
2010-04-11

Episode 447
Jet Pistol of Anger! Luffy vs. Blackbeard!
2010-04-18

Episode 448
Stop Magellan! Ivan-san's Esoteric Technique Explodes
2010-04-25

Episode 449
Magellan's Tricky Move! A Foiled Escape Plan!
2010-05-02

Episode 450
The Escapee Team in Trouble! The Forbidden Move: Venom Demon!
2010-05-09

Episode 451
Come, Final Miracle! Break Through the Gate of Justice!
2010-05-16

Episode 452
To the Navy Headquarters! Off to Rescue Ace!
2010-05-23

Episode 453
The Friends' Whereabouts! The Weatheria Report and the Cyborg Animals!
2010-05-30

Episode 454
The Friends' Whereabouts! A Cheeper of Giant Birds and a Pink Showdown!
2010-06-06

Episode 455
The Friends' Whereabouts! Revolutionaries and the Gorging Forest's Trap!
2010-06-13

Episode 456
The Friends' Whereabouts! A Huge Tomb and the Panty Debt!
2010-06-20

Episode 457
A Special Retrospective Before Marineford! The Vow of the Brotherhood!
2010-06-27

Episode 458
A Special Retrospective Before Marineford! The Three Navy Admirals Come Together!
2010-07-11

Episode 459
Ticking Down to the Time of Battle! The Navy's Strongest Lineup in Position!
2010-07-18

Episode 460
A Vast Fleet Appears! Here Come the Whitebeard Pirates!
2010-08-01

Episode 461
The Beginning of the War! Ace and Whitebeard's Past!
2010-08-08

Episode 462
The Force That Could Destroy the World! The Power of the Tremor-Tremor Fruit!
2010-08-15

Episode 463
An All-Consuming Inferno!! Admiral Akainu's Power!
2010-08-22

Episode 464
A Descendent of the Beast! Little Oars Jr. - Full Speed Ahead!
2010-08-29

Episode 465
Justice for the Winners! Sengoku's Strategy in Action!
2010-09-05

Episode 466
Straw Hat Team Arrives! Tension Grows at the Battlefield
2010-09-12

Episode 467
Even If It Means Death! Luffy vs. the Navy; The Battle Starts!
2010-09-19

Episode 468
Hard Battles, One After Another! Devil Fruit Eaters vs. Devil Fruit Eaters!
2010-09-26

Episode 469
Kuma's Transformation! Ivan-san's Blow of Anger!
2010-10-03

Episode 470
The Great Swordsman Mihawk! Luffy Comes Under the Attack of the Black Sword!
2010-10-10

Episode 471
The Extermination Strategy in Action! The Power of the Pacifistas!
2010-10-17

Episode 472
Akainu's Plot! Whitebeard Entrapped!
2010-10-17

Episode 473
The Encircling Walls Activated! The Whitebeard Pirates backed into a corner!
2010-10-31

Episode 474
Execution Order Issued! Break Through the Encircling Walls!
2010-11-07

Episode 475
Moving into the Final Phase! Whitebeard's Trump Card for Recovery!
2010-11-14

Episode 476
Luffy at the End of His Tether! An All-out Battle at the Oris Plaza!
2010-11-21

Episode 477
The Power That Will Shorten One's Life! Energy Hormone, Redux!
2010-11-28

Episode 478
To Live Up to a Promise! Luffy and Coby Collide!
2010-12-05

Episode 479
The Scaffold at Last! The Way to Ace Has Opened!
2010-12-12

Episode 480
Each on Different Paths! Luffy vs. Garp!
2010-12-19

Episode 481
Ace Rescued! Whitebeard's Final Order!
2010-12-26

Episode 482
The Power That Can Burn Even Fire! Akainu's Ruthless Pursuit!
2011-01-09

Episode 483
Looking for the Answer!
2011-01-16

Episode 484
The Navy Headquarters Falls! Whitebeard's Unspeakable Wrath!
2011-01-23

Episode 485
Ending the Matter! Whitebeard vs. The Blackbeard Pirates!
2011-01-30

Episode 486
The Show Begins! Blackbeard's Plot is Revealed!
2011-02-06

Episode 487
Akainu's Tenacity! The Fist of Magma Attacks Luffy
2011-02-13

Episode 488
The Desperate Scream! Courageous Moments that Will Change the Future
2011-02-20

Episode 489
Here Comes Shanks! The War of the Best is Finally Over!
2011-03-06

Episode 490
Mighty Leaders Face Each Other Down! Heralding the 'New Era'!
2011-03-20

Episode 491
Landing at the Maiden Island! The Harsh Reality Falls upon Luffy!
2011-03-27

Episode 492
The Strongest Tag-Team! Luffy and Toriko's Hard Struggle! (II)
2011-04-03

Episode 493
Luffy and Ace! The Story of How the Brothers Met!
2011-04-10

Episode 494
Here Comes Sabo! The Boy at the Gray Terminal!
2011-04-17

Episode 495
I Won't Run! Ace's Desperate Rescue Operation!
2011-04-24

Episode 496
To The Sea Someday! The Pledge of the Three Brats!
2011-05-01

Episode 497
Leaving the Dadan Family for Good?! The Kids' Hideout Has Been Built!
2011-05-08

Episode 498
Luffy Becoming an Apprentice?! A Man Who Fought Against the King of the Pirates!
2011-05-15

Episode 499
The Battle against the Big Tiger! Who is Going to be Captain?!
2011-05-22

Episode 500
Freedom Taken Away! The Nobles' Plot Closing in on the Brothers!
2011-05-29

Episode 501
The Fire Has Been Set! The Gray Terminal in Crisis!
2011-06-05

Episode 502
Where can freedom be found? A Sad Departure of a Boy!
2011-06-12

Episode 503
Take Good Care of Him! A Letter from the Brother!
2011-06-19

Episode 504
To Live Up to the Promise! Departures of Their Own!
2011-06-26

Episode 505
I Want to See Them! Luffy's Mournful Cry!
2011-07-03

Episode 506
Straw Hats in Shock! The Bad News Has Reached Them!
2011-07-10

Episode 507
Reunited with Dark King Rayleigh! Decision Time for Luffy!
2011-07-17

Episode 508
Back to Our Captain! A Jail Break at the Sky Island and the Incident on the Winter Island!
2011-07-31

Episode 509
Encounter! The Great Swordsman Mihawk! Zoro's Self-Willed Deadly Struggle!
2011-08-07

Episode 510
A Disaster for Sanji! The Queen's Return to the Kingdom!
2011-08-14

Episode 511
Unexpected Relanding! Luffy, to Marineford!
2011-08-21

Episode 512
With Hopes It Will Reach My Friends! Big News Spreading Fast!
2011-08-28

Episode 513
Pirates Get on the Move! Astounding New World!
2011-09-04

Episode 514
Living through Hell! Sanji's Fight for His Manhood!
2011-09-11

Episode 515
I Will Get Much, Much Stronger! Zoro's Pledge to His Captain!
2011-09-18

Episode 516
Luffy's Training Begins! To the Place We Promised in 2 Years!
2011-09-25

Episode 517
The Beginning of The New Chapter! The Straw Hats Reunited!
2011-10-02

Episode 518
An Explosive Situation! Luffy vs. Fake Luffy!
2011-10-09

Episode 519
The Navy Has Set Out! The Straw Hats in Danger!
2011-10-16

Episode 520
Big Guns Assembled! The Danger of the Fake Straw Hats!
2011-10-23

Episode 521
The Battle is on! Show Them What You Got From Training!
2011-10-30

Episode 522
Everyone Together! Luffy, Setting Out for the New World!
2011-11-06

Information

Episode air date	21.02.2010
Episode runtime	24 min
Episode rating	7.86
Genres	Action & Adventure / Comedy / Animation
TMDB series rating	8.8
IMDb series rating	9.0
Series status	Returning series
Age rating	14+
Country	JP

Trailer

Additional videos

Happy 26th Anniversary to ONE PIECE [Subtitled]

Happy 26th Anniversary to ONE PIECE [Subtitled]

▶

Cast

Mayumi Tanaka
Monkey D. Luffy (voice)

Kazuya Nakai
Roronoa Zoro (voice)

Mari Yaguchi
요코 (성우)

Akemi Okamura
Nami (voice)

Kappei Yamaguchi

Kappei Yamaguchi
Usopp (voice)

Hiroaki Hirata
Sanji (voice)

Ikue Otani
Tony Tony Chopper (voice)

Yuriko Yamaguchi

Yuriko Yamaguchi
Nico Robin (voice)

Kazuki Yao
Franky (voice)

Katsuhisa Houki

Katsuhisa Houki
Jinbe (voice)

Cho
Brook (voice)

Reiko Takagi
Jewelry Bonney (voice)

Yohei Tadano
Dr. Vegapunk (voice)

Hideyuki Tanaka

Hideyuki Tanaka
돈키호테 도플라밍고 (성우)

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