One Piece Special: The Detective Memoirs of Chief Straw Hat Luffy
Plot: Aired after Episode 253 - In an alternate reality world that takes place in 19th century Japan, Luffy acts as a member of the secret police. This is made up of two adventures
Mayumi Tanaka. Mayumi Tanaka was 50 in One Piece Special: The Detective Memoirs of Chief Straw Hat Luffy as 'Monkey D. Luffy (voice)'.
Kazuya Nakai. Kazuya Nakai was 38 in One Piece Special: The Detective Memoirs of Chief Straw Hat Luffy as 'Roronoa Zoro (voice)'.
Akemi Okamura. Akemi Okamura was 36 in One Piece Special: The Detective Memoirs of Chief Straw Hat Luffy as 'Nami (voice)'.
Kappei Yamaguchi. Kappei Yamaguchi was 40 in One Piece Special: The Detective Memoirs of Chief Straw Hat Luffy as 'Usopp (voice)'.
Hiroaki Hirata. Hiroaki Hirata was 42 in One Piece Special: The Detective Memoirs of Chief Straw Hat Luffy as 'Sanji (voice)'.
Ikue Otani. Ikue Otani was 40 in One Piece Special: The Detective Memoirs of Chief Straw Hat Luffy as 'Tony Tony Chopper (voice)'.
Yuriko Yamaguchi. Yuriko Yamaguchi was 40 in One Piece Special: The Detective Memoirs of Chief Straw Hat Luffy as 'Nico Robin (voice)'.
Shigeru Chiba. Shigeru Chiba was 51 in One Piece Special: The Detective Memoirs of Chief Straw Hat Luffy as 'Buggy (voice)'.
Misa Watanabe. Misa Watanabe was 41 in One Piece Special: The Detective Memoirs of Chief Straw Hat Luffy as 'Vivi (voice)'.
Keiichi Sonobe. Keiichi Sonobe was 45 in One Piece Special: The Detective Memoirs of Chief Straw Hat Luffy as 'Igaram (voice)'.
Kenji Nojima. Kenji Nojima was 29 in One Piece Special: The Detective Memoirs of Chief Straw Hat Luffy as 'Pell (voice)'.
Kihachirō Uemura. Kihachirō Uemura was 41 in One Piece Special: The Detective Memoirs of Chief Straw Hat Luffy as 'Chaka (voice)'.
Moriya Endou. Moriya Endou was >> in One Piece Special: The Detective Memoirs of Chief Straw Hat Luffy as 'Cabaji (voice)'.
Eiichiro Oda. Eiichiro Oda was 30 in One Piece Special: The Detective Memoirs of Chief Straw Hat Luffy as 'Comic Book'