Raijin Raijin

Raijin Raijin (来迅 雷神, Swift Approach of the Lightning God) is an extremely advanced and powerful hyper-sensitivity (超神経, chōshinkei) Kekkei Genkai that enhances the process of perception to comprehension to response within the brain, thereby increasing the user's physical and mental capabilities far beyond what is considered normal. The body is controlled by electrical signals coming from the brain that travel along a special nerve fiber called axon, which is the primary transmission line of the body's nervous system. The function of the axon is to transmit information to different neurons, muscles and glands. Within the central nervous system, these descending connections from the brain allow for more sophisticated control and the speed at which they travel can determine reflex respones and the movement of the body's extremities such as the arms and legs.

The molding of chakra causes the bodies of those carrying it to activate 30 times more neural transmitters than the average person, which makes the function of his central nervous system, namely the cerebrum, cerebellum, and spinal cord, accelerate dramatically. As a result, their neural synapses are stimulated to their utmost limits; logical thinking, judgement, reflexes and speed all rise exponentially.

For these individuals, movement becomes almost incapable to be perceived by the naked eye, giving the illusion that they is teleporting. It can easily appear as though they are in several places at once, being capable of wiping out a significantly large enemy force in a short amount of time. Or close tremendous gaps of distance, while remaining undetected, simply due to the sheer speed at which they move. Their strikes in battle are also shown to be fast and relentless, able to launch a large barrage in an instant, leaving little time for their opponent to evade or counter. Such power however comes at a price as continuous use of the bloodline without rest begins to damage their nervous system. Initially, some of the signals will be severed or redirected and they will begin to lose control of their body. It will not move as they wants it to, making things like even just walking impossible. However, those possessing the necessary training and experience, can being to relearn the connection between their brain and limbs. In the worst case scenario, the users will end up paralyzed from the neck down for days at a time. It should be rarely used when there isn't any support with them as it would leave them susceptable to enemy attacks.