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(Known Busoshoku Haki Users)
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Revision as of 22:57, March 11, 2014

Busoshoku Haki allows the user to create a force similar to an invisible armor around themselves.[1] Similar to Tekkai, this Haki allows the user to defend against attacks that would otherwise cause them harm. Significant physical force can still overcome this defense; for example, Luffy struck Boa Marigold hard enough with Gear Second techniques that it sent her reeling.


It was used by Garp for the first time against Luffy to bypass his Devil Fruit power and hurt him in Water 7. Later, Sentomaru used a haki-imbued attack against Luffy, which made the Straw Hats think he was a Devil Fruit user due to their lack of knowledge about the ability. Afterwards, Rayleigh used Haki to stop Kizaru and even touch his Logia body. The first time the Kujas named this ability "Haki", they were shown wielding haki-imbued arrows. During the Marineford War, Haki was also used many times by marines and pirates alike. It was shown that Haki is very common in the New World, unlike in paradise where Haki users merely exist and almost nobody knows about it. It is later explained by Rayleigh once he begins training Luffy. In fact, it seems to be one of the main requisites to have learned (especially) this type of Haki to counter Devil Fruit abilities, in a similar way to being a Devil Fruit user when entering into the New World, something that is quite uncommon in the four Blues and the first half of the Grand Line.


Naturally this "invisible armor" can be used as a weapon to strike others with. It can be used to augment the user's own attacks, projected ahead of the user as pure brute force, or imbued in weapons to increase their effectiveness. Any attack enhanced by Busoshoku Haki hits immensely harder than it would normally be without it. The Kuja's Haki-imbued arrows, for example, are capable of penetrating solid stone.[2]

Vergo Full Body Haki

Vergo's body after hardening it.

This type of Haki also has the ability to bypass the powers of a Devil Fruit user, touching the "substantial body" beneath whatever protection the fruit provides, such as the case of body-altering Devil Fruits such as Logia or Paramecia users. However, unlike Kairoseki, it does not negate a user's Devil Fruit powers, allowing them to defend themselves, and continue fighting normally.[3] By the same effect, this Haki can also be used as a higher level of offensive, more so than just bypassing a foe's Devil Fruit powers.

A heavy concentration (or coating) of this Haki can be used to harden parts of one's body, turning the area black, thus making the user denser and more formidable, and giving their attacks greater power. Although Luffy, the first in the mainstream storyline to demonstrate this effect, named the technique as Busoshoku: Koka (武装色 硬化 Busō-shoku: Kōka?, Color of Armaments: Hardening), no other users, such as Vergo[4] and Smoker,[5] referred to this method by such a name.

Busoshoku Haki works independently of the user's Devil Fruit, as shown when Luffy uses it to enhance his Gear Third attack underwater.[6] This type of Haki may not be equipped to attacks that are not from one's body except for weapons, or anything generated from one's own body (like Kizaru's laser beams, Marco's flames or any other energy/non-solid attacks based on Devil Fruits). So, those who attack with parts of their body can combine their Haki and Devil Fruit powers.


Apparently, Akainu has found some way to avoid Haki attacks, as he was not visibly harmed even after Marco and Vista sliced him in the neck with Haki infused attacks. It is unknown how he can protect himself from Haki-imbued attacks but when he was attacked by Whitebeard with this type of Haki, he could not protect himself and he bled. Later, although Vergo imbued his entire body with hardened Haki, which nullifies the powers of Devil Fruits, Law bypassed his Haki and bifurcated him easily by using his Devil Fruit technique. It is unknown if Law used Haki to nullify Vergo's Haki but it is similar to how Akainu was able to nullify it.


Busoshoku Koka

Luffy's arm after hardening it.

  • Busoshoku: Koka (武装色 硬化 Busō-shoku: Kōka?, Color of Armaments: Hardening): This technique somehow uses Busoshoku Haki to harden the body (or parts of it) and object which the user is holding. It was first seen used by Monkey D. Luffy, in combination with Gear Third, in order to use his "Gomu Gomu no Elephant Gun" against the Kraken. When a body, body part, or object is hardened, it becomes black and has the same or stronger effect than the invisible application of Color of Armaments. It is implied that Hardening is stronger than the invisible application as the characters who are able to use Hardening are not seen utilizing the invisible application. When both hardened fists clash, it release massive shockwave and black-lightning like effects. So far Luffy, Vergo, Smoker, Zephyr, Chinjao[7],Garp[8] Sabo, and Jesus Burgess have been seen using it. Zephyr had earned the nickname "Black Arm" because of his mastery of it. It can also be imbued into weapons, as Vergo utilized it on a bamboo stick,[4] and Smoker on his Nanashaku Jitte, the latter indicating Busoshoku Haki can be used in conjuncture with Kairoseki. Also called Buso Koka (武装 硬化 Busō Kōka?, Armament Hardening) by Luffy when he uses advanced form of "Gomu Gomu no Gatling". In the Viz Manga, it is called Color of Arms Hardening and FUNimation subs, it is called Armament: Hardening.
    • Atama Buso (頭武装 Atama Busō?, Head Armament): Used by Luffy, he imbues his forehead with Busoshoku: Koka to harden it. This is first used in preparation for a Gomu Gomu no Kane against the Iron Shell Squadron. In the FUNimation subs, it is called Head: Hardening.
    • Gear Second Buso (ギア2(セカンド)武装 Gia Sekando Busō?, Gear Second Armament): Used by Luffy, he imbues his fist with Busoshoku: Koka while under the effect of Gear Second to harden it, which also seems to have the added effect of igniting it. It was first used in preparation for Gomu Gomu no Red Hawk against Hody Jones. In the FUNimation subs it is called Second Gear: Armament.

Known Busoshoku Haki Users

See also the associated category: Busoshoku Haki Users.
[v · e · ?]
Busoshoku Haki Users
Monkey D. Garp Silvers Rayleigh Sentomaru Marguerite Boa Marigold
Boa Sandersonia Kuzan Borsalino Sakazuki Marco
Jozu Boa Hancock Vista Edward Newgate  Shanks
Monkey D. Luffy Roronoa Zoro Sanji Pekoms Trafalgar D. Water Law
Smoker Tashigi Vergo  Donquixote Doflamingo Chinjao
Sai Boo X Drake Jesus Burgess Sabo
Issho Bellamy Pica Dracule Mihawk Kin'emon
Kurozumi Kanjuro Charlotte Cracker Charlotte Counter Charlotte Cadenza Charlotte Katakuri
Jinbe Charlotte Linlin Draw Portgas D. Ace  Charlotte Raisin
Marshall D. Teach Tamago Rob Lucci Shimotsuki Ryuma  Tsuru
Sengoku Stussy Hyogoro Diamante Trebol
Kaku Jabra Blueno Kumadori Fukurou
Kalifa Momonga Cavendish Bastille Edward Weevil
Inuarashi Nekomamushi Pedro  Kawamatsu Charlotte Perospero
Charlotte Smoothie Charlotte Daifuku Charlotte Oven Kozuki Oden  Gol D. Roger 
Non-Canon Users
Byrnndi World Shuzo Alpacacino Komei
Kung-Fu Dugong Dice Prodi Charlotte Cabaletta Douglas Bullet
Batman Speed

  •  : the character is deceased.
  •  *: the character's status is unknown, or show additional information. Hovering the symbol may give further details.
  •  : the character is non-canon.
  •  : the character is no longer part of this group. Hovering the symbol may give further details.

Translation and Dub Issues

The Kōka in Busōshoku: Kōka can also translate as "vulcanization", which is the process of rubber (or similar substances) being converted into a denser material.


  • Busoshoku Haki is similar to Tekkai. The difference between them is that Tekkai depends on the user's physical strength, but Busoshoku Haki depends on the user's willpower. Also, while Tekkai is more inclined to defense, with the user usually being immobile while tightening their bodies, Bushoshoku Haki does not have such a drawback.
  • Busoshoku Haki users can still utilize their Devil Fruit powers, despite Haki being able to negate Devil Fruit abilities. This is because Haki only allows the user to bypass defenses provided by other peoples' Devil Fruit powers. In fact, Devil Fruit users can use the two abilities together to make one or the other more effective.
  • Busoshoku Haki is the most used type of Haki in the series so far.
  • Although the black skin effect of its usage seems to be pretty ordinary when used at strong levels, it was seen only after the time skip. Several powerful characters (Rayleigh, Marine Admirals and Vice-Admirals, Whitebeard Pirates, etc.) have been seen using Busoshoku Haki before the time skip, but the black skin effect was not shown (this can be noted especially during the Summit War). The reason of this could be that Oda simply decided to use it after the time skip, (especially to demonstrate visually the use of Haki of his main characters, like Luffy, who before the time skip could not use this type of Haki) or he did not get the idea until that time.


  1. One Piece Manga and Anime — Vol. 61 Chapter 597 (p. 12-15) and Episode 516, Rayleigh explains Haki.
  2. One Piece Manga and Anime — Vol. 53 Chapter 516 and Episode 410, Marguerite says that the Haki is used in the Kuja weapons.
  3. One Piece Manga and Anime — Vol. 68 Chapter 671 and Episode 597, Robin explains how Busoshoku Haki affects Logia users.
  4. 4.0 4.1 One Piece Manga and Anime — Vol. 68 Chapter 672 and Episode 598, Vergo hardens a bamboo stick.
  5. One Piece Manga and Anime — Vol. 69 Chapter 685 and Episode 611, Smoker uses Haki to strike Vergo.
  6. One Piece Manga and Anime — Vol. 62 Chapter 605 and Episode 525, Luffy using his Devil Fruit powers enhanced with Busōshoku Haki despite being underwater.
  7. One Piece Manga — Vol. 72 Chapter 716 (p. 16-17), Chinjao hardens his fist when fighting Luffy.
  8. One Piece Manga — Vol. 72 Chapter 719 (p. 8-9), Garp uses Busoshoku Haki to harden his fist in his fight with Chinjao.

External Links

  • Vulcanization - Wikipedia article on the process Busoshoku Koka is derived from.

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