Himura Junan started out as normally as any another student shinobi, trying to learn the basics and become as strong to serve his village and country. When offered a choice of paths to take, he really wasn't sure what to do, so he chose Medical Ninja just as something to do for the moment. He began learning of the body and Medical Jutsu, curious about what he was learning, though perhaps not as much interested in actually becoming a doctor. Out of boredom, he began to read ahead into another part of Medical Jutsu, the preservation of dead bodies. As he began to look back and forth between them, he began to wonder how the two could coincide. In an unending balance, one could live forever. He began studying them both harder, searching for a way to reach his goal.
As he grew older, Junan grew closer and closer to realizing his dream. He had began locking his chakra inside his body to sustain and preserve it, but there was a problem… It would take more than the chakra his body was able to provide itself to be able to pull this off forever. He would have to take much more drastic measures to live forever… He snuck into an enemy camp one day, deciding to try out an experiment to create himself a much larger reserve of chakra. He snuck up on a sleeping Jounin and injected him with a tranquilizer to keep him sleeping. Once he was securely unconscious, Junan absorbed every once of chakra he could from the man, digging as far into his chakra as he could. He pushed this chakra into his reserves with his own, through his bloodstream and into his muscles, bones, and skin. He began to feel his body strengthening as he pushed more chakra into it to keep it preserved, and all he could think of was that he needed more. That night, he slowly picked off every enemy in the camp as they went to sleep, and they all became a part of him as their bodies died from over-exhaustion.
By the time the people of Junan's home village in the Land of Bears started to figure out that he didn't seem to be aging, he had already created himself an enormous reserve of chakra, but the only problem was that, even through exercise to increase it, one's body can only hold so much chakra. This turned him into a sort of vampire, seeking chakra to keep himself sustained and at his current age, which was in his early twenties by the time he finally came up with this final solution. Every so often, they would find groups of their enemies in the forest drained of their chakra, a large number of them not even severely harmed other than from chakra exhaustion. This drew more attention each time it happened, and the eventually started sending out stealth patrols to watch what happened, and one night Junan didn't notice them. When they came to question him and try to stop him, he turned on them and started to try to take them with the enemies, but a couple of them managed to get away before he could stop them. After they had reported to the leaders of the village what Junan was doing, he was exiled, and it became time for the man who had managed to make himself timeless to begin his new life.
As the years went on, Junan managed to draw attention to villages without being killed. He started silently attacking non-shinobi villages. By the time shinobi villages came to them and found the hundreds of drained bodies, he would already be long gone. When he would arrive, he looked just like a regular guy, though rather large and muscular, but he would turn small towns into ghost towns in a single night. By the time the shinobi of the country thought they were onto him, he would already be gone onto another country. How long it took to get to the next country really didn't matter. Though not come from 'the other side', he had found a way to make himself immortal, and he would never allow himself to be killed.
Centuries went on, and Junan began to hire himself out as a tactical mercenary every once in a while. For a large sum of money, he would go into a country that was the enemy of those he was hired by and take out small scattered villages. He would cause enough confusion and chaos that they would be looking for him and end up being caught off guard.
When the Ninja Clan Wars began, Junan saw a large opportunity to create himself a reserve that he had never thought possible before. He would literally be able to pick up his life blood off the ground of a battle field. After carving a trail of blood through history, he had decided to take a while to rest. He would allow himself to turn into a legend, thought to be nothing more than a myth before arising again. He hired a young Medical Ninja named Yin to help him keep his prey alive long enough. When a battle would start, he would sit on the sidelines and wait for people to start falling. He would kidnap those that were still alive and take them to an underground fortress that he had made. Yin would repair their bodies and put them in an induced coma to keep them under control. He literally captured shinobi by the hundreds from Students to Jounin, creating an enormous reserve of chakra that was infinite so long as the wars went on. He had lost his conscience long before this, and thus seeing this harvest of people was only a delight to him, a way to grow more powerful and live on forever. Once he was satisifed with what he had gathered, he began only going out for supplies. At first, he would go out disguised, but as the years went on, he would look as regular as any other man buying supplies because there were very few if any in the world old enough to recognize his face.
Years and years went on, and young man Yin became quite old and eventually died. Junan had refused to reveal his secret to him, mainly for the reason that his Preservation no Jutsu kept him from using Ninjutsu, and he needed Yin to be able to use his Medical Jutsu to keep his power source going. After Yin was gone, Junan did what he could, but eventually he finally had to absorb all the chakra he could from his remaining victims before they all finally died, and there lies the reason the 'retirement' of this centuries old 'vampire' has come to an end. At last, the time has come for him to return to the light of the world and begin hunting again. The legends told of a man with the strength to blast through mountains with his fists and turn villages into ghost towns in a single night will come to the surface again, and the tales of a vampire that leaves no trace will be told once more. Finally, it's time to hunt moving prey again…. Let the games begin and the streets flow with rain of blood.
