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Busoshoku Haki is a form of Haki that allows the user to use their spirit to create, in essence, an invisible armor around themselves.[2] Notably, this form of Haki can be used to injure Logia Devil Fruit users.

Similar to Tekkai, this Haki allows the user to defend against attacks that would otherwise cause them harm.

This form of Haki is by far the most common of the three.


It was used by Garp for the first time against Luffy to bypass his Devil Fruit power and hurt him in Water 7.[1]

Later, on Sabaody Archipelago, 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 touched 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 are fairly rare and almost nobody knows about it. It is later explained by Rayleigh once he begins training Luffy.

Busoshoku Haki UsersEdit

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 Vinsmoke 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
Kanjuro Charlotte Cracker Charlotte Counter Charlotte Cadenza Charlotte Katakuri
Jinbe Charlotte Linlin Draw Portgas D. Ace  Charlotte Raisin
Non-Canon Users
Byrnndi World Shuzo Alpacacino Komei
Kung-Fu Dugong Dice Rob Lucci Prodi Charlotte Cabaletta

  •  : the character is deceased.
  •  *: the character's status is unknown. 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.


Naturally this "invisible armor" can also be used as a weapon to strike others with. It can be used to augment the user's own physical attacks, projected ahead of the user as pure brute force, or imbued into weapons to increase their effectiveness. Any attack and/or weapon enhanced by Busoshoku Haki hits immensely harder than it would normally without it. The Kuja's Haki-imbued arrows, for example, are capable of penetrating solid stone.[3] Swordsmen tend to use Busoshoku Haki to imbue their blades to prevent them from chipping.[4]

Pica's Full Body Busoshoku Haki

Pica's body after being hardened.

This type of Haki also has the ability to bypass the powers of a Devil Fruit user whose body has been altered by their fruit in any way, 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 Seastone, it does not actually nullify a user's Devil Fruit powers, so it still allows them to defend themselves, and continue fighting normally.[5] By the same effect, this Haki can also be used as a higher level of offensive power, 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. As demonstrated with Vergo and later Pica, it is possible for one to coat their entire body in Busoshoku Haki. 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?, literally meaning "Color of Armaments: Hardening"), Donquixote Doflamingo and Roronoa Zoro are the only people to use this name for the technique.[6][7]


Busoshoku Koka

Luffy's arm after hardening it.

  • Busoshoku: Koka (武装色 硬化 Busō-shoku: Kōka?, literally meaning "Color of Armaments: Hardening"): This technique somehow uses Busoshoku Haki to harden the body (or parts of it) and objects 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. So far Luffy, Vergo,[8] Smoker,[9] Z,[10] Chinjao,[11] Garp,[12] Sabo, Jesus Burgess,[13] Donquixote Doflamingo,[6] Trafalgar Law,[14] Bellamy,[15] Sai,[16] Roronoa Zoro,[17] Pica,[18] Kin'emonKanjuro, Issho,[19] Sanji,[20] Charlotte Cracker,[21] Jinbe,[22] Charlotte Linlin,[23] Charlotte Katakuri,[24] and Silvers Rayleigh[25] have been seen using it. Z 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,[8] Smoker on his Nanashaku Jitte, the latter indicating Busoshoku Haki can be used in conjuncture with Seastone, and Zoro on his swords. Also called Buso Koka (武装 硬化 Busō Kōka?, Armament Hardening) by Luffy when he uses an advanced form of "Gomu Gomu no Gatling". It was also simply called Buso (武装 Busō?, Armament) by Doflamingo when he blocked Luffy's attack[6] and Zoro when trying to stop the birdcage.[7] 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?, literally meaning "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?, literally meaning "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.
  • Kairagi (梅花皮 Kairagi?, literally meaning "Plum Blossom Peel"): Used by Jinbe. He hardens his arms and crosses them in a defensive stance. This was first seen used against Big Mom's Cognac technique, which it briefly managed to hold back but eventually broke.[26] This is called Kairagi Glaze in the Viz Manga. Kairagi is a style of pottery that can resemble shark skin.


When two opponents using Busoshoku Haki clash, the one with the stronger Busoshoku Haki is more likely to be victorious.[18] This can make it difficult to overcome an opponent's Haki in a brute force battle. However, it has been shown that superior Busoshoku Haki is not an absolute defense, and can be overcome as long as the other opponent has superior physical strength, as shown when Luffy was able to damage Katakuri with Gear Fourth.

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.[27]

Busoshoku Haki is subjected for depletion if used for long periods of time as Busoshoku Haki is proportional to the amount of spirit life force an individual possesses and its stamina limitance. After the threshold is reached, the user will be unable to use it for a certain amount of time. It appears that the more Haki is used, the faster it will deplete. The users are unable to use Haki until they regain their stamina to use it again.[28]

Interactions with Devil Fruit UsersEdit

Devil Fruit Users are capable of using Haki themselves. This allows them to resist lesser Haki-imbued attacks, yet it is still possible to pierce through their defense if the attack is stronger. Busoshoku Haki works independently of the user's Devil Fruit if they have one, as shown when Luffy uses it to enhance his Gear Third attack underwater.[29] This type of Haki may not be used on attacks that are not from one's body except for weapons, but can be used on anything generated by one's Devil Fruit (like Kizaru's laser beams, Marco's flames or any other attacks based on Devil Fruits). Charlotte Katakuri has shown that one does not even need to be in direct contact with said substance to imbue his Busoshoku Haki into it.

Using Busoshoku Haki attacks on the element controlled by Logia type Devil Fruit Users will allow the attack to harm the "substantial body" of the opponent, since the element is essentially an extension of their body. However, this type of Haki will not harm the "substantial body" when used on elements controlled or produced by Paramecia type Devil Fruit users, since it is not actually part of their body (as demonstrated by Trebol). If the Paramecia type Devil Fruit affects the user's body itself (Luffy, for example is literally made of rubber) the user will also be harmed by a Busoshoku Haki imbued attack.

Haki's capability to counter Devil Fruit Users extends past Logia types, and lets them defend against certain Paramecia effects. However, this is dependant on the strength of the Haki, as Law bypassed Vergo's Haki and bifurcated him easily by using his Devil Fruit technique,[30] although it is unknown if Law used his own Haki to overcome Vergo's Haki but it is similar to how Akainu was seemingly able to nullify his attacker's Busoshoku Haki.

While Haki can bypass the devil fruit's defense, it doesn't negate the devil fruit, like Sea-Prism Stone does. Instead it "forces the devil fruit user's body into solidarity".

Translation and Dub IssuesEdit

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 and life force. 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. On the other hand, overusing Busoshoku Haki consecutively may drain the user for a period of time, a weakness not known to Tekkai.
  • Busoshoku Haki users can still utilize their Devil Fruit powers, despite Haki being able to negate Devil Fruit defenses. 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, as it is the most related attack and defense power in combat.
  • Although the black skin effect of its usage is very common after the timeskip, it was not seen at all before, not even during Summit War Saga, where many pirates and Marines of the highest level, who have been confirmed to be using Haki, participated. The reason for this is currently unknown (though this was most likely done, so that fans wouldn't be confused by this change in color before Haki was fully explained by Rayleigh at the end of the first half of the series).
  • When Luffy uses Gear Fourth form, his Busoshoku Haki takes the shape of tribal flames on his body; this is the first example of Busoshoku Haki forming a recognizable pattern. Big Mom's Haki takes the same form, though it's limited to her arm. When Katakuri performs his Zan Giri-Mochi attack, his Haki also becomes flame-shaped.
    • There is an extra color tone to the black skin effect in some characters when this Haki is used at its maximum (pinkish red for Luffy in Gear Fourth, purple for Vergo and Pica when used all over their bodies, and blue for Katakuri while using Zan Giri Mochi).
    • In the anime, Busoshoku Haki has more visual effects when used at its fullest than just the black skin. These effects are a green flame-like aura (in Sai's case), and a steam-like aura (black and purple for Zoro, Fujitora, and Marines; purple for Kin'emon; and pink for Kanjuro).
  • Jinbe is the first fishman shown to use Busoshoku Haki.
  • Pekoms is the first member of Mink Tribe shown to use Busoshoku Haki.


  1. 1.0 1.1 One Piece Manga and Anime — Vol. 45 Chapter 431 (p. 18-19) and Episode 313, Garp harms Luffy with his Fist of Love.
  2. One Piece Manga and Anime — Vol. 61 Chapter 597 (p. 12-15) and Episode 516, Rayleigh explains Haki.
  3. One Piece Manga and Anime — Vol. 53 Chapter 516 (p. 6) and Episode 410, Marguerite says that Haki is used in the Kuja weapons.
  4. One Piece Manga and Anime — Vol. 78 Chapter 779 (p. 3) and Episode 720, Mihawk speaks with Zoro on imbuing swords with Busoshoku Haki.
  5. One Piece Manga and Anime — Vol. 68 Chapter 671 (p. 7) and Episode 597, Robin explains how Busoshoku Haki affects Logia users.
  6. 6.0 6.1 6.2 One Piece Manga and Anime — Vol. 75 Chapter 745 (p. 7) and Episode 680, Doflamingo uses Busoshoku: Koka to harden part of his body when fighting Luffy.
  7. 7.0 7.1 One Piece Manga and Anime — Vol. 79 Chapter 787 and Episode 730, Zoro uses Busoshoku: Koka to harden his swords and hands.
  8. 8.0 8.1 One Piece Manga and Anime — Vol. 68 Chapter 672 (p. 4) and Episode 598, Vergo uses Busoshoku: Koka to harden a bamboo stick when hitting Law.
  9. One Piece Manga and Anime — Vol. 69 Chapter 685 (p. 15) and Episode 611, Smoker uses Busoshoku: Koka to harden his elbow when fighting Vergo.
  10. One Piece Vol. 1000, Zephyr's ability to blacken his arm is mentioned.
  11. One Piece Manga and Anime — Vol. 72 Chapter 716 (p. 16-17) and Episode 646, Chinjao and Luffy clash.
  12. One Piece Manga and Anime — Vol. 72 Chapter 719 (p. 8-9) and Episode 649, Garp uses Busoshoku: Koka to harden his fist when fighting Chinjao.
  13. One Piece Manga and Anime — Vol. 74 Chapter 737 (p. 10-11) and Episode 670, Sabo fights against Burgess.
  14. One Piece Manga and Anime — Vol. 77 Chapter 768 (p. 5) and Episode 707, Law uses Busoshoku: Koka to harden his hands when fighting Doflamingo.
  15. One Piece Manga and Anime — Vol. 77 Chapter 770 (p. 3) and Episode 711, Bellamy uses Busoshoku: Koka to harden his hand when punching Luffy.
  16. One Piece Manga and Anime — Vol. 77 Chapter 771 (p. 12) and Episode 710, Sai attacks Chinjao.
  17. One Piece Manga and Anime — Vol. 78 Chapter 778 (p. 7) and Episode 719, Zoro hardens his swords with Busoshoku: Koka in preparation for attacking Pica.
  18. 18.0 18.1 One Piece Manga and Anime — Vol. 78 Chapter 778 (p. 16) and Episode 719, Pica hardens his entire body with Busoshoku: Koka in preparation for clashing with Zoro.
  19. One Piece Manga and Anime — Vol. 79 Chapter 788 and Episode 731, Kin'emon, Kanjuro, and Issho harden their swords to the stop the Birdcage.
  20. One Piece Manga and Anime — Vol. 83 Chapter 833 (p. 8) and Episode 793, Judge confirms Sanji's usage of Haki.
  21. One Piece Manga and Anime — Vol. 83 Chapter 837 (p. 3) and Episode 798, Cracker hardens his shield.
  22. One Piece Manga — Vol. 86 Chapter 864 (p. 9), Jinbe defends himself from the Charlotte Family.
  23. One Piece Manga — Vol. 87 Chapter 871 (p. 8), Linlin clashes fists with Luffy.
  24. One Piece Manga — Vol. 87 Chapter 877 (p. 10), Katakuri clashes fists with Luffy.
  25. One Piece Manga — Vol. 89 Chapter 894 (p. 3), Rayleigh strikes Luffy.
  26. One Piece Manga and Anime — Vol. 53 Chapter 520 (p. 7-8) and Episode 414, Marigold fails to block Luffy's punch.
  27. One Piece Manga and Anime — Vol. 79 Chapter 786 (p. 12) and Episode 729, Luffy runs out of Haki after using Boundman, and has to wait for ten minutes for it to regenerate.
  28. One Piece Manga and Anime — Vol. 62 Chapter 605 (p. 11) and Episode 525, Luffy using his Devil Fruit powers enhanced with Busōshoku Haki despite being underwater.
  29. One Piece Manga and Anime — Vol. 69 Chapter 690 (p. 16-17) and Episode 616, Law defeats Vergo easily by bifurcating him along with his bamboo with his nodachi.

External LinksEdit

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

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