"Himuru!" a woman's voice screeched. "Himuru! Find Shoji and Yorimi!"
The man named Himuru, wearing a green cloak and a torn gray training jumpsuit nearly dived down a flight of stairs when he heard his wife screaming. "Izumi, what's wrong?" he call in a very concerned voice. When she didn't reply, he ran to the front of the house, and saw what he could only describe as a nightmare when he looked out the window. Several people lay dead on the ground, including his wife. He couldn't see any signs of struggle, but only the look of utter fear and despair in the eyes of those lying dead on the ground.
Having a general idea of what had just happened, Himuru flew back up the flight of stairs and picked up Shoji, his newborn child. The site of him filled his heart with hope, if only for a few fleeting seconds before another scream near his home brought him back to reality.
"Kame, please forgive my actions. I haven't a choice," he calmly said. "Yorimi," he called across the house. When his eight your old son, a genin with lots of potential and chakra control that would humble some chounin ran into the room, his father handed him a bundle of blankets containing his two month old brother. "Yorimi, I need you to go. Get out of the house, and get out of Konoha. Do you understand?" his father said.
"Wait… what? Why? What's happening?" the boy said, with tears gathering around the edges of his sharingan.
"Don't question me, you got it? Now go! Get out of here before it's too late!" his father commanded in a loud, yet pained voice.
"But where should I go?" the boy asked.
"Anywhere, just not here," he said. "Please Yorimi, do this for me. We could all die very soon if you don't do this for me. Now please, just go!" he commanded.
Yorimi stared up at his father and took the bundle containing Shoji. Without a word, the genin opened a window, looked to his father one last time, and leapt out the window. Before quickly leaping out of town, he glimpsed an avenue by his home, and saw several bodies in the street. What is going on? the young genin asked himself over and over, but he did what he was told, not wanting to let his father down. What about my mother? Where is she? he thought over and over. Why wasn't she there to say goodbye?
He went on thinking like this while he pushed his way through the thick jungle of fire country, and decided that his best route was to try and head to night country, a peaceful place that he had heard of after his father returned from a spying mission that lasted over a year. Remembering exactly who his father was made Yorimi feel better. His father had looked at him with so much fear, and so much hopelessness and had been so insistent on Yorimi leaving so quickly that something had to be wrong. A chounin hunter-nin who rarely did anything under an A rank mission wasn't someone anyone should mess with.
Still, what was happening to his clan?
Yorimi Uchiha continued to leap through the trees while unbeknownst to him, his home was being utterly wiped out by Itachi Uchiha. It wasn't for another several days of hard traveling and little rest before reaching the eternal darkness of Night Country that Yorimi heard the news of his home, and the fate of his family. He also learned of a sole survivor found in the area: Sasuke Uchiha, Itachi's younger brother. Yorimi remembered how ambitious and powerful Itachi was, and the rumors that he wanted something called a Mangekyo Sharingan. All the worry and fear that was running through the boy distracted him from the fact that his eyes had gained a second tomoe. It was another day or so before he was able to clear his head that he realized his eyes improved.
Yorimi spent several years in the foreign land. Since the people of the Hidden Night Village had learned of the tragic destruction of his clan, they agreed to shelter the two Uchias. In this time, Yorimi witnessed several things that his parents should have by all rights seen. Shoji's first words, his first steps, his first tomoe advancement…
Wait, Yorimi thought. He's barely old enough to hold a shuriken, but he has a second tomoe already? the genin thought. Shoji's second tomoe had appeared in his right eye, which was very strange for a three-and-a-half year old. Lifting a hand to his own eye, he felt a wave of sadness as he hadn't been able to bring himself to train since they arrived in the Hidden Night. The Night-nins had refused to allow him to train, fearing the same outcome for their village as the Uchihas' home. So, instead of training Yorimi found every scroll and book relating to the Sharingan that he could find, and in turn every scroll about the Byakugan he could find. As the years passed, and he and Shoji grew older Yorimi finally asked if he and Shoji could be allowed into the ninja academy in the Hidden Night village.
The request stirred the village, and caused an uproar when the Yurokage and the Council couldn't agree on what to do. Finally, after another four years of hoping, pleading, threatening, and all out begging on Shoji's part, the Yurokage aloud Yoromi and Shoji to enter the Night-nin academy.
Yorimi: 15 (oldest applicant to the Academy for his class, however he dominated everything put forward to him)
Shoji: 7 (looking to his brother for support, Shoji grew to be a powerful student in the Academy, and passed the exams with excellent grades… though he could never figure out why all his Kage Bunshins were stronger than they should be…)