Because at Marineford, Luffy didn't master Haki. Haki mastered him. "Why Luffy's Haki FAILED at Marineford (And Why That's Genius)" Hashtags: #OnePiece #Luffy #Marineford #Haki #OnePieceAnalysis

Here’s the painful truth:

Even the executioners hesitate. Sengoku, the Fleet Admiral, narrows his eyes. "Don't panic. He’s not the one doing it…"

The Unnamed Power At this point in the story (2011 in the anime, 2010 in the manga), the concept of Haoshoku Haki (Conqueror’s Haki) had only been whispered about. We saw Shanks use it on the Moby Dick to crack Whitebeard’s ship. But Luffy? Luffy was supposed to be a rookie.

The Scene: The battlefield of Marineford is soaked in blood. Whitebeard’s allies are falling. Ace’s execution is seconds away. And Luffy, already broken and exhausted, stands between the Admirals and his brother.

Then, it happens.

"W-What is this pressure?!" a Marine screams.

As Luffy stares down the three Admirals—Akainu, Aokiji, and Kizaru—he lets out a primal roar. In the anime , the screen pulses. The air cracks . Several of the surrounding Marine soldiers collapse instantly, foaming at the mouth. Vice Admirals like Momonga and Dalmatian flinch, steadying themselves.