While Luffy had previously tapped into this power unconsciously—most notably on Amazon Lily—his use of it at Marineford was a "point of no return".
This display stuns the world's most powerful figures, including Fleet Admiral Sengoku, the three Admirals (Akainu, Kizaru, and Aokiji), and even Whitebeard himself. Why This Moment Mattered luffy uses haki in marineford
Luffy’s Haki at Marineford is not the polished weapon it will become, but rather a raw nerve ending exposed by trauma. The most cited example is his use of (Haoshoku). Midway through the battle, as he races toward the execution platform, Luffy unleashes a blast of sheer will that knocks out a significant portion of Admiral Akainu’s subordinate Marines. The reaction of the witnesses is telling: Vice Admiral Momonga identifies it immediately, and even the hardened pirate captain Jinbe stares in awe. Crucially, Luffy himself is confused. He does not understand what he did, nor can he control it. This is Haki as reflex—a scream of intent so powerful it bends the world, yet so untrained it exhausts him and proves useless against any opponent of true stature (the Admirals barely flinch). While Luffy had previously tapped into this power