One Piece Blue

One Piece Blue is a single-issue companion guide published by Carlsen in 2006, offering a concise reference to the early world and characters of Eiichiro Oda's sprawling pirate epic. As a data book, it compiles key story arcs, crew profiles, and setting details from the manga's first major saga, serving as a handy primer for readers catching up with the series. While a minor entry in the One Piece library, it reflects the franchise's enduring popularity in Germany, where Carlsen has long published the main series.