Haki (lit. "ambition, aspiration") is a special technique found in the world of One Piece.
Haki is a type of spiritual energy that allows the user to perform various superhuman feats by harnessing their willpower. As Haki is directly tied to one's psyche, in theory everyone is capable of accessing it. However, unlocking the use of Haki can be prove very difficult for those who are not aware of it.
Typically, Haki can be identified by an aura of black-and-red lightning around the user.
Types of Haki
Observation Haki: Allows the users to read their opponents' movements and detect the presence of others.
Armament Haki: Grants protection, increased offense and counters certain Devil Fruit abilities (mostly Logia types). Appears as a black coating on the body and weapons wielded by the user.
Supreme King Haki: The rarest type of Haki that only few "chosen ones" possesses. Allows the user to enforce their will on weaker opponents, rendering them unconscious. In addition, an experienced user of Supreme King Haki can infuse it into their weapon or attacks, thus significantly increasing their power.
