When Did Haki First Appear In The One Piece Series?

Haki, introduced subtly with Shanks in the manga's debut, has evolved to become an essential power, highlighted significantly during the Marineford War Arc in the One Piece universe.

One Piece: Every Sub-type of Haki, Explained

Wait, I must've missed this. Isn't this implying that Zoro was the

What is Observation Haki in One Piece? - Quora

Who used Armament Haki first in One Piece? - Quora

Luffy's Conqueror Haki Timeline: Key Episodes And Turning Points

Armament Haki was first used just a little bit after Alabasta Arc

One Piece: Every Character Who Can Use Advanced Conqueror's Haki

One Piece Cliffhanger Puts Luffy's New Haki to an Extreme Test

When Did Haki First Appear In The One Piece Series?

One Piece: All Haki Types and Its Subforms (Explained)

Luffy's Conqueror Haki Timeline: Key Episodes And Turning Points

One Piece: What is Haki? - All Forms of Haki Explained - FandomWire