A special technique found in the world of One Piece.
Observation Haki: Allows the users to read their opponents' movements.
Armorment Haki: Grants protection, increased offense and counters certain Devil Fruit abilities. Appears as a black coating on the body and weapons wielded by the user.
Conqueror's Haki: Allows the user to enforce their will on weaker opponents, rendering them unconscious.
