Luffy was able to manifest the advanced versions of Armament Haki and Conqueror's Haki. For the former, Luffy trained in the Prisoner Mine, and learned how to deal internal damage using Ryuo.

As the Sumo Inferno officially kicks off in Episode 932 of the anime, Luffy manages to knock out the first wave of opponents pretty quickly by using his Conqueror’s Haki. But when the second ...

As a display of just how strong he’s become, Chapter 939 of the series shows Luffy using the Observation Haki with ease as he’s seemed to fully master the use of the haki and able to predict ...

As One Piece enters its Final Saga, Luffy faces his ultimate challenge: Imu, a god-like king surpassing even Kaido in power. To defeat this immortal foe, Luffy's Gear 5 and Haki won't suffice; he ...