Weeks later on the rooftop of Onigashima, Luffy was once again hit by a powerful technique, however, this time, he figured out the secret to Kaido's power; Conqueror's Haki.

Conqueror’s Haki is different—it’s something Luffy was born with, not trained into. He first used it without knowing back in episode 389, during the Duval fight.

Chapter 1010 of the series sees Luffy and the others continue to struggle against Kaido, and Zoro manages to actually leave a wound on Kaido with the use of his own Conqueror’s Haki.

Since then, Luffy has mastered his Haki well enough, but he still doesn't know that Conqueror's Haki had advanced applications. In Egghead, Luffy fought against the Five Elders and couldn't even ...

Affiliation: Pirates Haki Type: Armament, Observation, Conqueror's Don Chinjao is a character fans are very well aware of. He made his debut in the Dressrosa arc where it was revealed that he was ...

Luffy fighting Kaido and genuinely affecting him with attacks, even before awakening Advanced Conqueror’s Haki, further solidifies his rank in the top five Armament Haki users.

Gear 5 and haki aren’t enough to win the final war If Luffy’s ever going to achieve victory, he’ll require a lot more than just Gear 5 and Conqueror’s Haki.

By this point, we’ve seen Luffy go from knowing nothing to fully mastering all three types of Haki – Observation (Kenbunshoku), Armament (Busoshoku), and Conqueror’s (Haoshoku).

On the other hand, Luffy mentioned that he was aware of Zoro’s abilities, but Zoro himself didn’t realize he could use Conqueror’s Haki. This led Gaban to shout at him.