Born to the Nazomeku clan, Eiji was raised by the ways of The Rule and crafted to become something the others of his clan did not think they could themselves. Eiji grew older, going through the steps of life, but never as any other had. He was only the 5th generation of his clan, and only in this generation had the Rules truly been followed to their fullest. He was the first to follow them correctly and in their completed form, he did so very well. As he grew and moved through the academy he took up playing with strings. Making cat's cradles
and the like with them, running and waving them through the air, it was just for fun then. However as Eiji grew and began to understand the shinobi arts better and better he came to a conclusion, string wasn't just a play thing, it was a potential weapon as well.
He began sparring with his friends and his peers, a genin now, and found them difficult to wield, but the task occupied him. The practice was aplenty, but his fingers were nimble and he soon had his own set of skills. It was soon after that his sensei woke him up to his chakra nature: Earth. He liked it, it made him feel grounded, it reminded him of his duties, of The Rules in all their solidity and assurance of dominance and strength of will. Around came the exams, he did not excel right off and while he was skilled he barely managed the first portion of the exam, held in a system of canyons. They were told to find their way out and not to fall to whomever they fought. When on the ground they were safe, but when scaling the walls or traveling upwards they became each other's prey.
Only through his use of reinforcement on his threads and his deft clever mind did he survive that ordeal. Passing to the next exam, the final one, he was faced against a member of his own former team. Had he been any other it would have been traumatizing....
The kid would never be a nin again, and he'd hate Eiji with a passion, not only that but he had submitted to him, despite himself, and so Eiji became known as skilled --and maybe more than a bit insane. Regardless life continued on, for him at least, the boy he had fought --his former teammate at that-- disappeared soon after. Sadly, he was eventually sent on a mission to take down what could only be a missing nin harassing a civilian village for supplies. It turned out to be the boy, Ikajui, he still was bereft of an arm, after all there was no real way to replace it.
He didn't kill the boy though, he did redeem himself by barely injuring him. Ikajui had gained skill and so it was Eiji who ended up with more wounds, but in the end he triumphed and dragged his former friend back to Amegakure where he was tried and sent to prison. Following this his rank was soon raised and he continued to gain skill in notoriety. These days people ironically refer to him as 'Wireless' to allude to his strange personality and intriguing combat style. He is well known in the village and despite having been teaching teams for a good time, he is often sent on solo missions as well.