Out in the middle of a huge forest, far from any civilisation lived two people. One just about reaching the age of 1 and a half, and the other nearing their late 30s. In an era after the first war which resulted in a win for the land of fire.
"Here mamma look it's Hashirama the best shinobi ever, isn't he the strongest".
"Yes sweetie only your father could rival his strength".
"So cool I wanna be just like dad".
She stared at her son with happiness in her heart, but also a bit of sadness as her son had never gotten his own father. That was common in this era as after the first war lots of shinobi died leaving their families and loved ones behind.
"Ok Izuna that's enough story time we can read again tomorrow as it's getting darker outside and you must be tired".
"Ok mom, I love you good night".
"Good night sweetie," she said as she kissed him on the forehead. She watched him take the big book which was half his size and jump down from the chair and run to his room.
They didn't live in a huge place but it was cosy enough for them as there was one bedroom with a big double bed which they share at night, one small bathroom with just a toilet and a mirror, a small kitchen with a small dining room table fit for 4 people, and lastly a small living room with a couple of lounge chairs.
The house was shaped like a small one-story, square house and if you were to look at it from above it would be hard to spot as it is made entirely out of wood surrounded by tall thick trees, in the middle of an endless jungle.
It was set out with only two closed-off rooms which were the bedroom and the bathroom. Then the kitchen, dining room and living room were all connected in an open space. There were no taps in the house or freshwater but there was a river that flowed not too far from the cottage.
It was a peaceful and quiet place which they both enjoyed.
The young boy's name was Izuna Uchiha and he was a genius for his age as he could talk, read and somewhat write at the age of one and a half not to mention that he was already trying to do chakra control at such an age. He had fair skin that was smooth and pleasant to look at, with long black hair and dark black eyes like the abyss. Accompanied by his cute chubby face he was adorable.
His mother on the other hand was called Sara Uzumaki, a descendant from Ashura Ōtsutsuki, she had dark red hair and black eyes. She had a nice figure that would make everyone remember her even if they saw her for a second. Although she was nearing her thirties she was getting weaker every day and this was because of problems with birth and she had a weak heart.
\His father was non others than the Ghost of the Uchiha. Madara Uchiha and this is where he got all his characteristics from. But what is special about Izuna is that he has both Ashura Ōtsutsuki and Indra Ōtsutsuki blood in him and this is why he has such a large chakra pool.
It all started when Madara went to fight Hashirama in the valley of death, resulting in his loss. But before he died he was able to transplant some of Hashirama's cells into his body but during this stage, he was weak and at death's door. Until Sara Uzumaki came and treated his wounds and nursed him back to health.
This is what made Madara fall in love, not the fact that she healed him but that she knew that he was Madara and one of the most feared shinobi by the five nations, and despite this, she risked her life to help him. This brought out something in Madara's heart as he had always been looked at in fear and anger, all except Hashirama of course. This is why he decided to settle down and wait for the Rinnegan to awaken.
They lived in the same house for a few years and all was nice a peaceful until Zetsu came and one night while he was still weak from fighting Hashirama; as his wounds were still bad and he was suffering many internal injuries which meant he was easy prey for someone like Zetsu giving the power of Kaguya Otsutsuki, he altered Madara's memory so that he would forget the peaceful times he had with his wife, and would make him remember all the suffering he went through. He also gave him a vision of the Gedo Statue and its true power. As a result, Madara left without informing his wife; as he had forgotten all memories with her, to go and gain more power and set up his plans for the future.
That was the last time Sara saw him and she gradually became depressed, until 7 months later and Izuna was born. She found warmth in him as he resembled her husband which she loved.
This is why Izuna had both Indra Ōtsutsuki blood (from Madara because he was his reincarnation) and Ashura Ōtsutsuki's blood (from Sara as he was his descendant and also Madara as he carried some of Hashirama's cells). Izuna having thick Ōtsutsuki blood but also Hashirama cells allows him to have amazing regenerative cells in his body and this also meant that he would age slower and live longer.