Uo Uo no Mi, Model: Seiryu

The Uo Uo no Mi, Model: Seiryu is a Mythical Zoan-type Devil Fruit that allows its user to transform into a hybrid and full Azure Dragon at will. Described as the "strongest class of Devil Fruit", it was once a World Noble treasure before being eaten by Kaidou, after Big Mom had stolen it during the God Valley Incident 38 years ago.
At some point, Dr. Vegapunk extracted a sample from a captive Kaidou's Lineage Factor and, with it, successfully created an artificial replica of this Devil Fruit. However, the given transformation was not of the same color as the original, and so solely for this reason the result was deemed a failure by Vegapunk. Said replica was eventually consumed by Kouzuki Momonosuke, who gained a dragon transformation similar to Kaidou's (albeit pink rather than blue).
==Etymology==
* is Japanese for "fish".
* is the Japanese name of the Azure Dragon.
==Appearance==
The fruit is spherical and slightly oblong in shape, somewhat resembling a pinecone. Its blue exterior gives the appearance of having overlapping scales: each "scale" has a small, dark-blue oval in the middle that bears a signature Devil Fruit spiral at the bottom, while the scales' outer portions are of a lighter-blue shade. On its top, the fruit possesses orange leaves and two identical, separate stems, with one being purple and the other a lighter pink shade.
The artificial version of this fruit takes the form of a blue apple with double ring patterns throughout the fruit, the outer rings being darker green than the inner ones' lighter.
==Transformations==
This fruit's ability user can turn into a giant, serpentine, blue-scaled dragon called Azure Dragon: a type of . Additionally, as with all Zoans, they can access a Human-Beast Form, becoming a smaller half-dragon humanoid. Apart from scales, acquired dragon features include horns (a second pair in Kaidou's case), sharp fangs, and limbs with clawed hands and feet. In his full Beast Form, Kaidou grows to rival a small town in size, making this one of the largest yet-seen Zoan transformations. His Human-Beast Form, while not as colossal, is still very large and, in shape, comes closer to his Human Form, with scales on his arms, outer torso, back, and legs as well as six horns on his head, claws on the hands and feet, and a long tail.
In addition to his standard Human-Beast Form, Kaidou has on several occasions showcased an alternate hybrid form, specifically when under the influence of Shuron Hakke. Such form appears slightly bulkier and has different facial features: a full set of fangs, a wider nose, and eyebrows similar to his full Beast form. In the anime, his scales also have a darker, more vibrant blue color (tinged purple) compared to Kaidou's other forms.
The artificial duplicate of this fruit grants whoever eats it a similar transformation, with certain minor differences, the main one being the scale color being pink rather than azure. Also, the user's natural size affects the transformation's size proportionally, as Momonosuke at 8 years old assumed a comparatively small form, but once he was aged to 28, he became as big as Kaidou as a dragon. So far, the Human-Beast Form for the artificial version has yet to be seen.
===Gallery===
;Artificial Fruit
==Strengths==
Being one of the strongest existing Zoan powers, the giant dragon transformation comes with a massive boost to the user's physical abilities, far greater than what is seen with most other Zoan types. The full dragon form's strength befits its size, as the user can severely damage structures like houses merely by brushing by them. When Kaidou flew around Okobore Town in a drunken stupor, it was believed that if he continued wreaking havoc senselessly, not just the town but Kuri itself would be wiped out. The user's arms, while thinner compared to the rest of their dragon body, are still very strong, a single swipe of which can send large fish-men flying through rock formations with great force and rip apart houses with ease, even when drunk. In the anime, the full dragon form's power is further exemplified, with Kaidou seen causing intense, gusty shockwaves simply by moving through the air or being thrown around, as well as with a mere puff or burp. He was able to send Monkey D. Luffy flying with immense force using a tail swipe and easily overpowered Luffy's Haki-imbued use of Gear 3 with one of his dragon hands, as well as by thrusting his head forward. Two decades ago, in his fight with Kouzuki Oden, Kaidou in his Beast Form repeatedly clashed with the samurai on even terms, including matching the force of Oden's Tougen Shirataki with his head, countering his blades with his claws and fangs, and even using one of his mustache tendrils to ensnare and toss Oden away.
Apart from raw strength, the user's size as a dragon belies their mobility, as they can move about at great speeds while keeping pace with significantly fast, human-sized foes.
The scales covering the user's dragon body are noted to be extraordinarily durable. Blows of incredible power, including ones strengthened by regular Armament Haki, have proven utterly ineffective at hurting Kaidou—e.g., when in full dragon form, he shrugged off a nonstop pummeling by Luffy's strongest Gear 3 attacks, without being scathed in the slightest. Nonetheless, as with Kaidou's extremely tough human skin, his dragon scales can be penetrated, and blood drawn from him, using attacks that bypass external defenses, like advanced-grade Armament Haki.
Beside the transformation itself, the fruit bestows multiple supernatural abilities, the most out of any Mythical Zoan seen so far. The most prominent of these is the power to conjure , with which the user can travel through the air by using them as footholds, effectively enabling flight; Kaidou's dragon arms tend to be continuously encircled by fiery rings, which may be said clouds helping him fly more effectively through the air. Also, the Flame Clouds can be used to lift other objects, including entire islands, into the air and move them, for extended periods even and while using their other powers simultaneously. Furthermore, there is no apparent need for the user to transform in order to manifest (or at least maintain) Flame Clouds.
In addition, the user can create and control various elements as a dragon, both in their full Beast and Human-Beast Form. The most commonly seen element used is fire, such as a concentrated scorching blast of fire that the user breathes out, which can travel many kilometers in the span of seconds and instantly decimate a large, earthen structure, as well as rapidly shooting fireballs in the anime. Aside from flames, the user can launch lightning bolts while roaring (Kaidou is able to summon lightning bolts from the sky without transforming as seen in the anime) and cutting blades of wind while blowing, on top of stirring up strong, fast-rotating tornados. It is also shown that Kaidou can summon large hails of ice in the video games.
The user's Human-Beast Form sees their draconic strength focused in significantly smaller frame, with this diminished size granting them a boost in agility and speed while seeming overall better adapted to close combat. The user also retains access to their elemental attacks, like their fire breath (though with a smaller range in accordance with their smaller body size, compared to their full dragon form).
==Weaknesses==
Due to the massive amount of space the user takes up after entering their full Beast Form, their ability to move about in enclosed spaces is greatly hindered. Additionally, depending on how much care is given to their surroundings, the user's transformed body having a propensity for collateral damage may become a liability for allies. The user's massive body also leaves more openings, making them an easier target for attacks, especially multi-directional assault from more than one enemy.
While the user's dragon scales are immensely tough, the user remains vulnerable to attacks that, by their nature, can bypass external defenses. Usage of advanced, emitted Armament Haki, in particular, can let opposing parties hurt the user's dragon form (even if used by enemies that are physically far weaker than the user), as can Supreme King-infused attacks. Other examples of effective attacks reaching the target's insides are ones utilizing powerful soundwaves or the Ope Ope no Mi's "surgical" techniques.
Moreover, the user's signature ability to breathe fire can be countered by an opponent who knows how to cut flames. The Flame Clouds generated by the user will also weaken as the user is pushed to their physical limit (and can also be extinguished by water, like normal fire). If the user loses consciousness, their Flame Clouds will disappear completely.
Besides all these factors, the user is affected by the standard Devil Fruit weaknesses.
==Usage==
After extracting Kaidou's Lineage Factor, Vegapunk attempted to create his own Artificial Devil Fruit, something that he succeeded in, but he then deemed the project a failure. Despite all this, having consumed it, Kouzuki Momonosuke has shown certain abilities no different from Kaidou such as enhanced strength, breathing flames and conjuring clouds, more so after being matured by Shinobu's Juku Juku no Mi, though he has yet to master them. Vegapunk revealed that he deemed this Artificial Devil Fruit a failure simply because the user turned into a Pink Dragon, instead of an Azure Dragon.
Kaidou uses this fruit's power frequently in combat. He typically starts out battles in his full dragon form and transforms back into a human upon getting more serious, his base form seeming more suited for intense and up-close, one-on-one combat. If his adversaries prove strong enough to handle both his human and full dragon forms, Kaidou will enter his Human-Beast Form—quite possibly the strongest of his three basic forms, it is generally used in all out fights against stronger and faster enemies that his two other forms have trouble dealing with.
When engaging foes in his full dragon form, Kaidou frequently hovers a considerable distance away from them, out of melee range, so as to assault them with destructive, long-ranged attacks of various elements, like his fire breath. In actual close combat, he has been seen chomping down on opponents within reach or powerfully swiping at them with his claws.
When entering his Human-Beast Form, Kaidou takes to wielding his kanabo, Hassaikai, like he does in his Human Form. With the boost he gains in strength, he can swing the club with absolute destructive force, causing massive shockwaves and striking melee blows too dangerous for most enemies to take head on. Becoming far more agile than as a full dragon, Kaidou can move around by slithering through the air, using his dragon tail to propel himself forward or upwards, which aids his offensive moves. Moreover, his tail is prehensile and capable of capturing opponents off guard. Kaidou also demonstrates the ability to breath fire in his hybrid form, though with less force due to his decrease in size.
Once Kaidou acknowledges an opponent and gets drunk enough, he is able to engage in Shuron Hakke, a unique fighting style that takes advantage of Kaidou's drunken mood swings and allows him to quickly switch between his Zoan forms and employ more unpredictable techniques. During certain moods, Kaidou may even shift into completely unique forms outside his usual three. For example, while in a laughing or bloodthirsty mood, Kaidou manifests a bulkier version of his Human-Beast Form that can use stronger versions of his kanabo attacks, and while in a "thieving" mood, he turns into a smaller, slightly more humanoid variant of his Full Beast form that can swiftly fly around in sharp curves to dodge overwhelming enemy attacks.
Both in and outside of battle, Kaidou can create his "Flame Clouds" to use primarily as footholds or to levitate himself in order to take flight; he can thus easily travel between islands by flying quickly and crossing the open sea, such as between Onigashima and the Wano mainland. He can also levitate objects, even gigantic ones, by creating enough of his clouds to surround whatever he wishes to float away. This was chiefly seen when Kaidou sent the entire island of Onigashima aloft to proceed with his New Onigashima Project, levitating the island toward Wano's Flower Capital.
===Kaidou===
*: Kaidou's signature attack. He gathers fire inside his mouth before "breathing" it out into a huge, conical blast toward his target of choice. This blast travels rapidly (in the anime covering a tremendous distance within moments) and is extremely powerful. It can instantly decimate a large structure (like a castle's ruins) while leaving the surrounding terrain (like a mountaintop) blown to bits and scorched, can set a sizeable portion of a forest ablaze, and even be split into numerous smaller fireballs shot out like bullets. Despite this move's strength and scope, it can be countered by Foxfire Style. When Raizo cast this attack back at Kaidou via his scrolls, it proved able to somewhat damage the latter's own dragon body. Bolo is a term used in Central America and Mexico meaning "drunk". In the VIZ manga and Funimation adaptations, the technique is called Blast Breath. 
:*In the anime Kaidou is shown to be able to diffuse this attack into multiple smaller shots. This spreads out the damage and makes it harder to dodge, but also makes it significantly weaker than the original form. He used it against the Nine Red Scabbards in an effort to make them keep their distance.
 
*: An attack where Kaidou blows strongly, thereby creating powerful, crescent wind blades that can easily cut through solid stone as well as human bodies. The move was first seen being used in Kaidou's fight against the Nine Red Scabbards on the roof of Onigashima's Skull Dome, severing Kikunojo's left arm, but was not named until Kaidou used it against the Worst Generation members on the same roof. Denjiro described the wind blades as , a Japanese term for cutting whirlwind derived from the yōkai . In the VIZ manga and Funimation adaptations, the attack is called Demolition Gust.
**Kaidou is also capable of performing this move while in Human-Beast form. In this case, he quickly swings his Hassaikai to generate a vertical crescent-shaped wind blade that travels straight forward, akin to a Tobu Zangeki.
 
*: Kaidou spins his serpentine body into a coil to summon several tornadoes around him. Because of their wind speed, these tornadoes can pull people away from the ground and within Kaidou's range in midair, where he may chomp down on them. The technique was first seen in use against the Worst Generation members on the Skull Dome's roof. It was effective in capturing a defenseless Monkey D. Luffy, but Roronoa Zoro was able to neutralize it with his own Kokujo: O Tatsumaki technique. The name of the attack is the Japanese word for , but with the kyūjitai of the kanji instead of the , and thus is not to be confused with the Santoryu technique of a similar name. In the VIZ manga and Funimation adaptations, the technique is called Dragon Twister.
**: Kaidou spins the lower portion of his elongated dragon body at great speeds, in a manner resembling a tornado himself, that helps to gather enough wind to release and direct the crescent wind blades of Kaifu towards his targets. This move was first seen being used in Kaidou's fight against the Worst Generation. In Episode 1018, the technique is depicted differently, with Kaidou spinning his lower body in a tornado-like fashion but releasing Kaifu from his mouth as usual. This was later changed to its proper execution in Episode 1064. In the VIZ manga and Funimation subs, the attack is called Dragon Twister Demolition Breath. In the Funimation dub, this attack is called Dragon Twister Demolition Gust.
 
*: Kaidou breathes a large amount of flames from his mouth, which coat his original dragon body and take its shape. The fire dragon dwarfs Kaidou's already large dragon form and rivals Onigashima in size. It produces enough heat to near-instantly melt Onigashima's remaining "horn" by lightly brushing against it, preventing opponents from touching Kaidou, though Luffy, a user of advanced Armament Haki, is able to counter this due to not having to make physical contact. The name of the technique is a reference to the story . In the VIZ manga and Funimation adaptations, this is called Flame Dragon Torch. 
**: Kaidou lunges at his opponent in his Kaen Daiko state, and unleashes an explosive bite with his flaming jaws. This technique was first used to counter Luffy's Gomu Gomu no Bajrang Gun. In the VIZ manga and Funimation adaptations, this is called Rising Dragon: Flame Bagua.
===Momonosuke===
*: Like Kaidou, Momonosuke gathers a large amount of fire inside his mouth before "breathing" it out into a huge, conical blast toward his target of choice. It was first used against Aramaki's wooden form, burning him to a crisp and forcing him to regenerate from a sprout, although Momonosuke initially struggled to replicate Kaidou's technique.
==History==
38 years ago, the fruit, alongside the Nikyu Nikyu no Mi, was one of the prizes in the Native Hunting Competition on God Valley. Ginny considered them to be crucial to escaping the island and formed a plan to steal them. After a subsequent clash between the Rocks Pirates, Roger Pirates, and Marines, Emporio Ivankov and Bartholomew Kuma managed to steal the Devil Fruits. Ivankov prepared to eat the fruit while Kuma ate the Nikyu Nikyu no Mi, but then Charlotte Linlin assaulted Ivankov and snatched the fruit from him. She later gave this fruit to Kaidou for him to eat and considered it a lifetime debt from which he could not escape.
Sometime after eating the fruit, Kaidou came into Marine captivity, and the scientist Vegapunk was able to extract his Lineage Factor for the purpose of creating an Artificial Devil Fruit that would grant the same exact abilities. Despite the success in that area, however, Vegapunk deemed it a failure because he couldn't get the dragon's color right, and the fruit was stored away on Punk Hazard. 34 years later, it was eaten by Kouzuki Momonosuke, thus granting him a dragon transformation much like Kaidou's, though Momonosuke's power was initially out of his control.
==Trivia==
* This is the first and currently the only Devil Fruit whose name features double syllables as vowel sounds with no consonant: . Thus, it is (minus the "Model" designation) one of the shortest Romanized Devil Fruit names.
* Ironically, despite a line of Zoan models being named after dragons (the Ryu Ryu no Mi) and this being the only known Devil Fruit ability to actually enable transformation into a dragon (the fruits of the Ryu Ryu no Mi series granting dinosaur/ancient reptilian transformations), this fruit is not named after dragons but fish.
**This fruit's "fish" designation is a reference to the connections present between dragons and fish in East Asian (especially Chinese) mythology. Particularly, the fruit may draw inspiration from the Chinese myth, wherein the Dragon Gate is located atop a waterfall cascading from a legendary mountain, on the Yellow River. Many carp swim upstream against the river's strong current, but few are capable or brave enough for the final leap over the fall. If a carp successfully makes the jump, it is transformed into a majestic dragon; thus, a Chinese dragon's large, conspicuous scales indicate its origin from carp.
*** Coincidentally, Wano, the country where Kaidou resided, is reached by ascending a high waterfall that giant koi known as dream koi regularly swim up, with those koi being said to dream about becoming dragons.
*The , in Chinese and other East Asian mythologies, is a and one of the (the "Four Guardians") among the Chinese constellations, representing the cardinal direction of the East. It is described as representing the Spring season, Easter, and the Wood Element, which includes lightning and wind.
*While this fruit is classed as Mythical Zoan, with dragons explicitly stated as having mythical status in the One Piece world, dragons have also been real existences in the series, although modeled after Western dragons.
*Kaidou's dragon powers were first hinted at in the Punk Hazard Arc, as Kin'emon expressed deep resentment against one of Vegapunk's artificial dragons while fighting it. When Brook commented that the samurai's hatred was reminiscent of someone trying to avenge their dead parents, Kin'emon replied that it was "nothing less", referring to Kaidou being responsible for his master Oden's death.
**Another hint was given in the Zou Arc, when Kin'emon became displeased after Kanjuro created a pink eastern dragon to assist them.
* According to Oda, Roronoa Zoro would have this Devil Fruit if he was allowed one, albeit "consumed" by one of his swords.
*Kaidou's teeth in his Human-Beast Form had a design discontinuity between chapters 1008 to 1010, and then 1011. Initially, while his upper canines became elongated fangs, Kaidou otherwise retained his angular human teeth. In the later design, the rest of his teeth became sharper and fang-like. However, the design was later reverted back to the original from Chapter 1016 onwards. That said, Kaidou does sport a full set of fangs when utilizing his alternate hybrid form.
*While present in his full Beast Form, Kaidou's tattoo is never shown for an unknown reason in his Human-Beast form.
*Kaidou's dragon form has four claws/toes: four-clawed dragons are customarily depicted in Mongolia, and (as opposed to the three claws common for ). In China during the imperial dynastic era, four-toed dragons symbolized imperial aristocracy (e.g., princes), denoting imperial ranking just below the emperor himself, who is symbolized by five-toed dragons.
*In mythology, Eastern dragons that can breathe fire are minor. They only do so when they are said to be rather violent or sent from the heavens to earth as punishment. Kaidou's ability to breathe a fire blast (contrary to the Eastern dragon's prevalent water association) is likely inspired by of fire-breathing dragons or "firedrakes".
*Befitting Kaidou's title as the world's "Strongest Creature", Asian dragons (particularly Chinese dragons) are noted to be extremely powerful mythical beasts in Asian mythology, some even deified as gods in heaven and worshipped as such in Chinese myth.
*When Kaidou first appeared in his dragon form, he did so by emerging through dark, swirling clouds in the sky. This may be inspired by dragons in 's ukiyo-e paintings, as well as the dragon Shenron from the Dragon Ball franchise. In both cases, dragons' arrivals are accompanied by dark clouds covering the sky.
*The presence of both the Uo Uo no Mi, Model: Seiryu and the Nikyu Nikyu no Mi showing up together during God Valley Incident — and how in the end Bartholomew Kuma's group could only acquire the Nikyu Nikyu no Mi — may be a reference to a passage of Chapter Gaozi I: "魚，我所欲也；熊掌，亦我所欲也，二者不可得兼，舍魚而取熊掌者也。生，亦我所欲也；義，亦我所欲也，二者不可得兼，舍生而取義者也。 (I like fish, and I also like bear's paws. If I cannot have the two together, I will let the fish go, and take the bear's paws. I like life, and I also like righteousness. If I cannot keep the two together, I will let life go, and choose righteousness.)" The same passage is condensed into the idiom 魚與熊掌, 不可兼得 (lit. "Fish and bear paw, cannot have both"), which has a similar meaning to "Can't have your cake and eat it too."
*In SBS Volume 108, Oda was asked what Emporio Ivankov would look like with the Uo Uo no Mi, Model: Seiryu if he had eaten it on God Valley. He provided a drawing of his Beast form, noting that he found his face scary.
==References==
==External links==
* – Wikipedia article about the Azure Dragon.
* – Wikipedia article about the Chinese Dragon which Kaidou's full beast form resembles.
==Site Navigation==
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Category:Mythical Zoan
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