Insei (陰性 lit. 'negative') is a C-RANKED shinobi and member of an unknown faction. Not much is known about his past; only that he was found on the borders of the demon country with no signs or give-away as to how he managed to stay alive throughout the duration that he was abandoned. He was found by an old man, crossing the borders as he made his way to his regular fishing spot. Insei was brought up by this man, and was originally called something else; but that's irrelevant. Insei was told stories as a child of the shinobi of the ninja world, and how they make strong impacts on those around them. He was told of the sage's great feats throughout the world and how he was helping to make it a better place. Insei's adoptive father died when he was thirteen, and Insei was left to fend for himself. He sustained himself through minor amounts of food, such as fish and bread, and for some reason could keep himself active and 'alive' without the need to intake glucose. Little did he know, he had the power to absorb radioactive energy, and 'chakra particles' from the atmosphere around him. He eventually came to know of this remarkable power, and began training daily, in an attempt to make an impact of his own upon the shinobi world.
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(吸収の芸術, Kyūshū no) ¦ (lit. 'art of absorption') is Insei's primary fighting style. The name is self-explanatory; using chakra absorption, and his unique 'kekkei genkai' that allows him to absorb radioactive energy and chakra particles from the air around him, Insei theoretically can become a walking battery pack. He never runs out of energy, and if he ever does, he is able to replenish his chakra reserves almost instantaneously through the user of various forms of absorption. He is incredibly talented in the art of absorption, being able to drain an enemy's chakra dry in no more than a minute. He also possesses the unique ability to release an almost 'electromagnetic pulse', from his fingertips, nullifying or augmenting his targets electrolytes, causing devastating effects to their body. (チャクラ構成体, Chakura Konsei-tai) ¦ (lit. 'chakra constructs') is Insei's "secondary archetype". Through the energy he absorbs from the atmosphere, he creates constructs of chakra and radioactive energy that he can shape to his whim, and can perform a multitude of tasks. If Insei kept all the energy he absorbed from the atmosphere, his tenketsu itself would go into over-drive, and cause harmful things to happen to his body; so he had to create a way in which he could use this energy, which was both useful and efficient. Insei can create constructs such as shields, whips, swords, temporary body armor and can also pressurise the chakra itself to be fired off as a concussive blast or ray towards his target. (放射性エネルギ, Hōshasei Enerugi) ¦ (lit. 'radioactive energy') is the unique energy type Insei is capable of absorbing and releasing in combination with his chakra; also able to imprint his energy through physical touch. Prolonged exposure to physical contact with Insei can cause extensive irritation to the skin, often leading to blistering and burns, and in worst-case scenarios; superficial necrosis or skin disease (cancer, etc). Through brief encounter with the energies Insei is able to output, it will only cause minor burns, and light scarring of bodily tissue.