One Piece: Nenmatsu Tokubetsu Kikaku! Mugiwara no Luffy Oyabun Torimonochou
English title: One Piece: The Detective Memoirs of Chief Straw Hat Luffy
Japanese title: ワンピース 年末特別企画！麦わらのルフィ親分捕物帖
Type: TV Special
Episodes: 1
Source: Manga
Genres: Comedy, Fantasy
Studios: Toei Animation
Duration: 42 min
Rating: PG-13 - Teens 13 or older

In an alternate reality world that resembles Edo Period Japan, Luffy acts as a member of the police. This is made up of two adventures: in the first, Buggy makes trouble in the town; in the second, a mysterious girl named Vivi appears (aired after Episode 253). This special contains several cameos from characters throughout the entire series. A second pair of episodes were aired after episode 290, continuing this story, as part of the New Year's special.