This wasn't just Armament Haki (which hardens the body). This was an advanced coating that amplifies the power exponentially.
Luffy's Conqueror's Haki is a vital aspect of his character and a driving force behind the narrative of the One Piece series. Through his journey, Luffy has demonstrated an unwavering commitment to his values and an unshakeable will, which are reflected in his Conqueror's Haki. As the series progresses, it is likely that Luffy's Conqueror's Haki will continue to evolve, influencing the fate of the One Piece world and shaping the course of history. luffy conqueror's haki
With the ability to coat his body in the "King's Disposition," Luffy has officially entered the realm of legends. He sits alongside Shanks, Kaido, Big Mom, and Whitebeard as one of the few pirates in history capable of wielding Conqueror’s Haki at its highest level. This wasn't just Armament Haki (which hardens the body)