Haōshoku Haki (覇王色の覇気) is a rare form of Haki that cannot be attained through training and only one in a million people carry it. It can be improved through training, as it grows as the users spirit grows. \r
\r
This type of Haki grants the user the ability to dominate the wills of others. The most common usage in the series so far is knocking those with weak wills unconscious. Those with more expertise can pick out weak-willed individuals in a large group and knock them out without affecting those around them. The greater the power gap, the easier it is to knock the victim out. Those with stronger wills can resist or even ignore the effects of Haoshoku Haki. One can also use Haki to destroy things as seen by Shanks. When on Whitebeards ship Shanks was able to crack a part of the ship using his Haki. \r
\r
Also called: Conquerors haki and Kings Haki.\r
\r
There have been two ways in which this Haki has been used. The first and most common way is in a quick burst that will knock out those with weaker wills relatively easily. The second method is to release it continuously, which will not only knock out those of weak wills around the user, but also put pressure on the surroundings, actually affecting other physical objects besides living beings. It also has been shown that light bursts of Haoshoku Haki can be used in order to tame or intimidate creatures, and show the users superiority over the beast(s).\r
\r
The two main (common) types of haki (which everyone can have) are: \r
Busoshoku haki (Armament Haki / Color of Arms Haki ) \r
Kenbunshoku haki (Observation haki / Mantra / Color of Observation Haki).\r
\r
Haki in general:\r
Haki (覇気) is a mysterious power that is found in every living being in the world. It is not that different from the normal senses. However, most people do not notice it or fail to awaken it. In simple terms, Haki is an ability to sense spiritual energy (Kenbunshoku), use life force (Busoshoku) and overpower enemies (Haoshoku).\r
\r
SOURCE: One Piece Wikia\r
\r
Also read:\r
The words Ha and Ki, meaning dominate and air. Together you can make out something like air of dominance/atmosphere of fear or better phrased, Aura of dominance/supremacy or Aura of fear/terror. for more info about Haki (willpower) and Sakki (killing intent) Read:\r
\r
~ CA at AnimeSuki\r
\r
EPISODE 478 \r
\r
© Eiichiro Oda / Shueisha, Toei Animation\r
License coordinated by FUNimation Entertainment