In the popular anime series One Piece by author and illustrator Eiichiro Oda, Monkey D. Luffy learned to use Haki while training with former pirate king Gol D. Roger's right-hand man Silvers Rayleigh.

Over the decades, Luffy went from a would-be pirate that could throw a punch or two here and there with his stretchy limbs blessed to him thanks to a Devil Fruit to one of the strongest pirates ...

The country of Wano has not been kind to the Monkey D. Luffy and the Straw Hat Pirates. Jumping from one fight to another, it seems like the feudalistic, isolationist nation is hardly giving our ...

Luffy and Rayleigh say goodbye to Jinbe and go to Rusukaina Island, where Luffy will be trained under Rayleigh. Rayleigh explains to Luffy about Haki, demonstrates for him on a wild giant elephant.