Luffy must learn advanced Conqueror's Haki techniques like long-range Haki and ability to counter Observation Haki.

Villains in One Piece range from iconic to scarily dangerous but some completely underestimated the strength of Monkey D.

One Piece is available to read via Viz Media. The series can be read by the fans officially and for free on the Shonen Jump ...

Well over 1000 episodes into the anime and 110 volumes of the manga — not to mention the live-action Netflix series — and "One Piece" still has its share of enduring mysteries. But there's one ...