Which Episode Luffy Use Supreme Haki
Luffy's journey with Supreme Haki began during the Marineford Arc (episodes 393-595). As he witnessed the execution of his idol, Portgas D. Ace, Luffy's emotions reached a boiling point, causing him to unconsciously unleash his Supreme Haki. This display of power allowed him to intimidate and affect several powerful Marine officers, including some Admirals.
The correct canonical hierarchy, as established by Silvers Rayleigh and detailed in Vivre Card databooks, is: which episode luffy use supreme haki
In the Wano Country Arc, Luffy learns to go beyond just "releasing" Haki. Luffy's journey with Supreme Haki began during the
Kaido’s head snapped back, a line of blood trickling from his mouth. He looked down at the young pirate, whose straw hat cast a shadow over his glowing eyes. Portgas D. Ace