One Piece (2009) – Season 12 Episode 421:
The Friends' Whereabouts! A Princess Negativity and the King of Demons!


Watch One Piece Season 12 Episode 421 (October 11, 2009) – "The Friends' Whereabouts! A Princess Negativity and the King of Demons!" online

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One Piece Season 12 Episode 421 - The Friends' Whereabouts! A Princess Negativity and the King of Demons! (2009)
7.4/10from 5 votes
TitleOne Piece
GenreAction & Adventure, Comedy, Animation
Air Date2009-10-11
Season12
Episode421
OverviewYears ago, the fearsome Pirate King, Gol D. Roger was executed leaving a huge pile of treasure and the famous "One Piece" behind. Whoever claims the "One Piece" will be named the new King of the Pirates.

Monkey D. Luffy, a boy who consumed a "Devil Fruit," decides to follow in the footsteps of his idol, the pirate Shanks, and find the One Piece. It helps, of course, that his body has the properties of rubber and that he's surrounded by a bevy of skilled fighters and thieves to help him along the way.

Luffy will do anything to get the One Piece and become King of the Pirates!
Stars
  • Mayumi Tanaka (Monkey D. Luffy (voice))
  • Kazuya Nakai (Roronoa Zoro (voice))
  • Akemi Okamura (Nami (voice))
  • Kappei Yamaguchi (Usopp (voice))
  • Hiroaki Hirata (Sanji (voice))
  • Ikue Otani (Tony Tony Chopper (voice))
  • Yuriko Yamaguchi (Nico Robin (voice))
  • Kazuki Yao (Franky (voice))
  • Mahito Ohba (Smoker (voice))
  • Cho (Brook (voice))
SubtitlesArabic, Basque, Catalan, Croatian, Czech, Danish, Dutch, English, Filipino, Finnish, French, French Canadian, Galician, German, Greek, Hebrew, Hindi, Hungarian, Icelandic, Italian, Japanese, Korean, Malay, Norwegian, Polish, Portuguese, Romanian, Russian, Simplified Chinese and Traditional Chinese, Spanish, Swedish, Tamil, Thai, Turkish, Ukrainian and Vietnamese.

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 James ThompsonRating: 9/10
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Sharp writing and phenomenal ensemble performances.

 Emily JohnsonRating: 9/10
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Constant evolution with fresh character challenges.

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 Sophia MartinezRating: 9.1/10
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Rich scenes and satisfying tension building.

 James ThompsonRating: 9.2/10
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 Mark DavisRating: 8.9/10
2025-06-12 — Season 1, Episode 34

An emotional rollercoaster with meaningful relationships.

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Great production quality and immersive cinematography that develops over time.

 David BrownRating: 8.9/10
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Fantastic cast and direction that dives into characters.

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Well-rounded, emotional, and beautifully shot series.

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2025-06-03 — Season 1, Episode 35

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 Michael LeeRating: 9.5/10
2025-06-23 — Season 6, Episode 9

An emotional rollercoaster with meaningful relationships.

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2025-06-14 — Season 3, Episode 18

An emotional rollercoaster with meaningful relationships.

 Daniel WrightRating: 8.8/10
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Every episode is filled with tension and depth.

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