Kekkei Genkai Classification
Elemental Kekkei Genkai: Transforms chakra into two different natures simultaneously and combines them to create a new chakra nature e.g. combining earth and fire chakra to create lava.
Corporeal Kekkei Genkai: They grant limitated control over a specific aspect of the holder's physiology e.g. controlling the growth of bones.
Visual Kekkei Genkai: More commonly known as doujutsu, they grant the holder's eyes special abilities e.g. seeing chakra on a visible spectrum.
Sakon and Ukon's Kekkei Genkai v2 (
Version 3)
This corporeal bloodline limit allows the user to control cells within the limitations of normal human physiology. Itâ's an unusual bloodline limit where everyone who has it is born with an identical twin. One twin is always fused inside the other from the very beginning, spending the early years of their life almost constantly inside their sibling. Even after learning to completely separate themselves from their twin, they spend most of their life merged.
The dormant twin is move freely inside of their sibling and can protrude any part of their body from anywhere on the dominant twin's body e.g. unmerging their head to cover their twin's blind spots or unmerging their hands and feet to launch a three-handed punch or kick. They can empower a jutsu with their combined chakra and control, perform them independently from one another and even do separate jutsu simultaneously.
This bloodline can be used to consciously heal any physical injuries without the use of medical ninjutsu by stimulating cell division. The speed and extent of the healing depends on the skill of the individuals but it can reach a level where they essentially possess regeneration, able to rapidly heal anything except lethal wounds. They can even instruct their cells to strengthen in response to the damage they receive such as having tougher skin after being cut by a sword or gaining greater resistance to heat after being burned by a fire jutsu. The twins can heal themselves individually but it works best when they are merged and are sharing their chakra.
At the more advanced stages of the bloodline limit, they can construct and deconstruct cells and proteins of their own body and the body of others through ninjutsu.
One such technique is their ability to deconstruct their body on a cellular level and enter an opponent's body. At that point they are able to alter the cells and proteins of the target at will, effectively killing them, and then leaving the target to reconstruct their own body again. This technique, however, has the disadvantage of them taking the same damage as the body they had invaded. An alternative use of this can done so that the bloodline holder fuses with the target but, instead of killing them, they heal their injuries by constructing cells where they have been damaged.
Another technique is how they can merge the cells of multiple people together inside them without surgery or risk of antibody rejection. One purpose of this is to rearrange their own cells to shape shift into a copy of that person for a disguise that surpasses the Transformation Technique. The other is to partially unmerge that body from the twins', to reanimate the body with their chakra and to then have that body use the same jutsu they wielded in life.
Juugo's Kekkei Genkai
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Addendum: The Fourth Databook has not given Juugo a Kekkei Genkai characteristic and his jutsu do not have Kekkei Genkai in their classification, so his abilities cannot be a Kekkei Genkai.]
This bloodline limit allows the holder to passively absorb natural energy and manipulate biomass. This natural energy constantly mixes with their physical and spiritual energy to produce senjutsu chakra. Unlike regular humans and animals, they do not need to stay still to absorb natural energy and are not vulnerable to petrification. Unfortunately, this has two side-effects; instead of petrifying, they go into murderous rages when there is too much natural energy in their body, and they cannot instinctively sense and control natural energy meaning that, without training, they cannot control these rampages.
This natural energy gives them the ability to transform all or parts of their body for a number of purposes. They can increase the size of their fists, extend the length of their arms, shape their flesh into natural weapons, transform their skin into dermal armour and grow new limbs from their body like horns, wings and tails.
They can even extend booster-like appendages from their body, concentrating their chakra pathways in the extension so that they can fire jets of chakra through them. This act as propulsion to fire the bloodline holder through air or increase the velocity of their attacks, or it is offensive attack made of destructive beams and bolts.
The bloodline holder's biomass manipulation enables them to absorb the flesh, organs and chakra of humans and animals through physical contact. This is usually done to replenish their own flesh and chakra when injured or weakened. They can also do the opposite and transfer their biomass or chakra to others to heal them but the nature of their power means they can usually only do this with those who possess their DNA.They can even absorb the flesh of one person and integrate it into the flesh of another person, typically as a safer method of healing an injury though it is harder to apply.
Their full body transformation is the equivalent of Sage Mode, causing them to adopt a demonic appearance where are all of their physical capabilities are significantly enhanced to turn them into a destructive weapon. However whilst they can use partial transformation without losing their minds, a full body transformation guarantees that they go on a rampage where they kill everyone around them.
And finally, a little known fact is that individuals with this bloodline limit are attuned with nature in such a way that they can instinctively befriend and communicate with animals, enabling them to use them as helpers or companions.
