THE Armament Haki has been explored in depth by Eiichiro Oda in the manga/anime One Piece. What are its uses and their respective best practitioners?
Armament Haki is one of the three types of Haki and without a doubt the most used in the world of One Piece. It allows the user to manifest their spirit and use it in a way offensive to injure his enemies, or defensively to protect damage that could be caused.
Like the Observation Haki, This type of Haki can be awakened by anyone and trained accordingly. Armament Haki is also the most common type of Haki. diversified of the series so far, and it has multiple uses. What are the applications of this type of Haki? And which users make the best use of these applications?
5. Usage: Ryuo
Ryuo is it that most of the inhabitants of the country of Wano They call it Armament Haki. Although it's just another name, it's also slightly different in its application. Unlike normal Armament Haki, Ryuo allows the user to to make his Haki flow starting from a point and not the to waste unnecessarily.
This type of Haki can be used over short distances and has been seen throughout the series being used by characters such as Sentomaru and even the Boa sisters.
Best User: Oden Kozuki
Kozuki Oden was a user extremely skilled at Ryuo. He was able to handle Enma And Ame no Habakiri at a very young age and to channel his Ryuo through them.
In its prime, Oden's Ryuo had become strong enough to cut even Kaido and inflict a major wound that he still bears to this day. Without a doubt, Oden's use of Ryuo was highly refined.
4. Usage: Advanced Ryuo
THE Ryuo advanced is a technique that comes a step after mastering the Ryuo. This technique allows the user to channel her Haki in the body of the target and the destroy from within.
Although this technique probably had many users, only Luffy And Rayleigh have so far correctly demonstrated this application of the Haki in the series. To Wano, Luffy has perfected its use and is now among the best users.
Best user: Silvers Rayleigh

Having so far only been presented by Luffy And Rayleigh, This Haki only counts them among the best users. Rayleigh has much more experience than Luffy, so he is certainly a better user and his Haki is refined, as seen when he removed Camie's collar quite easily.
Luffy, although new, is still a fairly good user impressive and even managed to destroy his own collar and that of Yamato, while removing the handcuffs from the latter using this application Haki.
3. Use: Busoshoku no Haki Dark Aura
Although still quite mysterious, Armament Haki has a property that allows the user to blacken his weapons permanently once he has infused them with Haki over a long period of time during battles.
They say that strengthens the blade and even improves its grade during the process. According Hitetsu, Enma might eventually turn black under Zoro's use and increase its strength also.
Best user: Shimotsuki Ryuma
Undoubtedly, the best practitioner of this application of Haki must be the Ryuma, the sword god of the land of Wano. He was the wielder of the famous Meito Shusui, which is currently one of the 21 legendary swords.
Gyukimaru confirmed that Ryuma was the person who had transformed the Shusui in Kokuto. Although Mihawk also handles the Kokuto Yoru, It is unknown whether he was the one who blackened it or not.
2. Use: Haki Used with a Devil Fruit
The powers of Haki and the devil fruit can be combined to make the user several times stronger than they already are. Although rare, a few people have been seen doing this, such as Charlotte Katakuri And Monkey D. Luffy.
When used, it coats the’Haki user, But instead of hardening, he also allows the Devil Fruit's powers to take effect. A good example is the fact that Luffy is covered in Armament Haki while bouncing in fourth gear.
Best user: Monkey D. Luffy
Monkey D. Luffy is the most well-known user of this type of Haki in history so far. When he uses Gear 4, Luffy can be seen using this type of Haki and combine it with his Devil Fruit powers, thus giving birth to the «"Tribal Flames" Haki.
Even someone as strong as Doflamingo was surprised to see Luffy use this power and was powerless before its might.
1. Use: Awakened Armament Haki
Those who trained their Armament Haki at most they can use a type that fans call emission of haki. It allows the user to coat their blades with Haki in such a way that a huge trail of lightning follows the weapon afterwards.
Although an exact explanation of how this occurs has not yet been provided, it is the highest level of Haki that fans have seen in the story so far. It has even shocked Oden, one of the best users of Armament Haki from history.
Best user: Gol D. Roger

Advanced Haki emission has only been used by Beard White And Roger during their confrontation in the New World several decades ago. Whitebeard was seen plastering Murakumogiri, while Roger did the same with his sword.
The confrontation was so immense that their weapons didn't even make contact, and the atmosphere around them began to crack. Even Oden was surprised by this level of weaponry use Haki.










