One Piece: Nenmatsu Tokubetsu Kikaku! Mugiwara no Luffy Oyabun Torimonochou

Synopsis

In a world reminiscent of Edo Period Japan, Luffy serves as a police officer. The narrative unfolds across two distinct adventures. The first involves Buggy causing disruption in the town. The second introduces a mysterious girl named Vivi. This special features numerous appearances by characters from across the series. A subsequent set of episodes continued this storyline as part of a New Year's special.