The beginning of the Yurizaki
Arc of ninja history:
Long long ago, before the discovery of jutsus, the land was filled with ninjas, fighters , and samurais. The only two main fighting styles were Kenjutsu (Weapon Combat) and Taijutsu (Martial Arts). The Sage of the Six Paths was said to be the legendary figure who founded the ninja world and was the creator and first user of modern ninjutsu, essentially making him the first shinobi in the modern context of the term. The Sage was a priest who appeared long ago in an age of endless war. He was the first to explain the truth about chakra and tried to use his power and wisdom to lead the world to peace instead of war.The Sage travelled throughout the world, spreading his ideas and religion, the Shinobi Sect ,which eventually came to be known as ninjutsu. Many people learned from the Sage, but others rebelled against the use of ninjutsu. Soon the whole world was in war once again. The Sage was wised and decieded to have each nation send there best Shinobi to battle to the death for the strongest belief. Over one hundred shinobi from from each sides of of the world came to fight. The area where they fought was now known as Shi no Mori.( Forest of Death).
Battle at Shi no Mori Arc:
The Sage of the Six Paths watched over the battle waiting for the last two surviving shinobi. One was named Nagato Pein and the other was known as Maru Yurizaki. The Sage wanted to award these two shinobi instead of just haveing one side win. He wished to tell the people that both sides were evenly matched. In doing so the two sides would re-unit with each other and the Sage may finally obtain peace. Maru and Nagato agreed with the Sages vision peacefully. The Sage awards the two ninja with enhaced eye bloodlines. The rinengan, eyes to acess the six paths, was awarded Nagota Pein and the Shintekigan eyes to Maru Yurizaki. On his deathbed, the Sage entrusted his strength, dream and legacy to two brothers.
Centuries later, the Rinnegan itself would resurface in Nagato. Jiraiya believed that the Sage could have somehow been "reborn" as Nagato in the present era. Nagato himself, however, admitted that his own power paled in comparison to that of the Sage. Maru Yurizaki has yet to show himself to the world. Maru obtained more then just eyes he was wiser as well. The word "shinteki"gan means eyes of "mental, psychological, physical strength". Maru knew that the world wasn't ready for the shintekigan and didn't reveal the clan of the Yurizaki.
History Of the Yurizaki Arc:
The deal of the sage was to never return to the village from whiched they came. As if Maru Yurizaki and Nagato Pein never existed. Shortly after Nagato dissapeared and Maru wasn't at all worried about returnning home. Maru Yurizaki was an assassin and mercenary so he had no home. Maru simply had a great reputation in the village that he was in and was paid to go assist in the war. Maru simpley became an outlaw and changed his over all immage as his name stood the same since no one actually knew him. Over the years Maru studied the art of his eyes.