Ichi Kenpo

Ichi Kenpo (壱拳法, Ichi Kenpo, lit. One Style) is a fighting style invented and developed by Lee Miyagi, the captain of The Warrior Pirates. Back when he was still training on Karate Island, Miyagi expressed a deep desire to find a way to fight like the fabled Devil Fruit users without having to resort to using one, as he believed using a Devil Fruit would cheapen the thrill of battle for him. What resulted was a fighting style where he could "make the world obey him," or in other words, use the natural world to his advantage in battle. Thus, Miyagi spent many years learning, practicing, and honing what would later become the main four branches to the Ichi Kenpo form of fighting. What resulted was a fighting style in which the user could generate powerful air gusts and compressed air blades, summon various forms of rock and minerals from the ground below, attack with fire, and even manipulate the water and its different states of matter, among other possibilities.

Miyagi later named the fighting style Ichi Kenpo, as his philosophy behind it, was that he was one man, with one life, living in one world, and using one fighting style at the time; and perhaps most importantly, that the fighting style allowed him to become one with nature, and achieve a total "oneness" with the world around him. As such, each of the various elemental branches gained the title "Kenpo," to denote their origins as part of the Ichi Kenpo way of fighting. The four main and basic branches became the fundamental pillars of the fighting style; Ho Kenpo (Fire Style,) Fu Kenpo (Wind Style,) Chi Kenpo (Earth Style,) and Sui Kenpo (Water Style.) From these four branches would come sub-branches, that would deviate from the standard uses of the four main branches and make use of an altered form of its very nature (such as Rai Kenpo (Lightning Style) being based on Ho Kenpo, and Hi Kenpo (Ice Style) originating from Sui Kenpo.) Likewise, combinations would later be made as Miyagi continued to improve his fighting style over time, like mixing Fu and Ho Kenpo to create Honoo Kenpo (Blaze Style.) And even then, Miyagi began to split apart what techniques were deemed acceptable to use, and which ones weren't. The acceptable techniques became known as Zen no Jutsu (Good Techniques,) and the forbidden techniques were listed as Aku no jutsu (Evil Techniques.) The Zen no Jutsu were allowed to be used at any time the user wished, but the Aku no Jutsu were expressly forbidden at all times, unless specific parameters were met, such as defending one's life, a loved one, or a treasure close to the user or user's loved one(s.) Currently, only one entire branch has been listed under the Aku no Jutsu list; this being Doki Kenpo (Toxic Style.)

While Miyagi has admitted that Ichi Kenpo isn't fully perfected, and needs fine-tuning here and there, the fighting style has proven to be downright effective in its goal to allow its users to keep up with Devil Fruit powers, and their users. And while the main focus appears to be based on manipulating the elemental world around one's self through force, the physical, hand-to-hand aspect has not been neglected either, and seems to reflect animal style Kung-Fu to some degree; especially as many of the melee techniques seen thus far have been named after different animals, whether real, extinct, or mythical. They even seem to mimic the behavior and bodily functions of the animals they're named after, such as the "Hunt of the Tiger Shark" relying on the user making fangs with their fingers, while their hands act as the shark's mouth, which then allow the user to act much like a shark biting into its prey. So far, notable users of this fighting style appear to be pirates for the most part, as the inventor and developer, Lee Miyagi, turned to a life of piracy sometime after creating the first four branches to Ichi Kenpo; while the pirate known as Rose Glory eventually learned the basics of the fighting style during her training for the Time Skip, and continued advancing in her skill with it over the course of her adventures.

Ho Kenpo
 Vulcan Fist: 

 Meteor Bullet  : 

 Dragonbreath: 

 True Vulcan Fist: 

 Fire Field: 

 Amaterasu  : 

Fu Kenpo
 Eagle Strike: 

 Current Cannon: 

 Wyvern Shout: 

 Eagle Flock: 

Chi Kenpo
 Great Upheaval: 

 True Upheaval: 

 Barricade: 

Sui Kenpo
 Kraken Arm: 

 Ryujin: 

 Charybdis: 

Rai Kenpo
 Lightning Rod: 

Trivia

 * The fighting style was originally created for fun, and was never intended to be a serious fighting style to be introduced into the One Piece world. However, after considering what he could do with the fighting style, Wyvern 0m3g4 eventually decided to add it anyway.

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Lee Miyagi - Creator of the fighting style

Rose Glory - User of the fighting style