Uchiha Izuna
"I'm really amazed by everything that's happening in my mind. Did I really reincarnate into Uchiha Madara's body? But what's even weirder is that I'm not a guy, but a girl. In the midst of my existential crisis, a sweet voice called out to me.
"Nee-San, talk to me. Are you okay?" The young Izuna spoke. I remember this boy from the original series; he died at the hands of Tobirama Senju, which was the breaking point for Madara. But it also brought about Konoha, though there are still deep-seated resentments in Madara's heart. Now I understand why Madara wanted to protect this boy.
From the series, I know that children are trained to fight from a very young age. And from what I saw in Madara's memories, I was just 8 years old, and my brother was 4 years old. I was also surprised to discover something more - Madara mentioned having 5 more siblings, which was confirmed in my memories, and even more astonishing, they were still alive.
Could it be that the original Madara from this series and myself as Tamara in my previous life have fused together? I confirmed this when I could sense thoughts that weren't my own. In my experiences watching anime and as a scientist in my previous life, it's possible, as I've seen in Dragon Ball with Piccolo and Kami-sama.
I didn't realize how much time had passed until my brother moved his hand in front of me. "Nee-San, react!" That brought me out of my thoughts, and seeing him again, I could feel the affectionate bond Madara had with him and his protective nature. I wanted to protect him too. It had all started anew, and it made me smile. I knew that, even as a girl, Madara had boundless potential, as women were also great kunoichi, sometimes even surpassing the guys.
They were just overshadowed by their love for them, as I saw with Kaguya. I wouldn't yield like that. I wouldn't make the same mistakes, nor Madara's of starting a war. I wouldn't let Zetsu influence me. I would work hard.
"Nee-San, why are you smiling?" My little Izuna saw his sister smiling, and that was rare because he knew she didn't smile easily unless something silly happened or made her laugh, so it was strange for him.
"It's nothing, just being unconscious due to chakra depletion made me reflect a bit," I would say calmly, looking at him with affectionate eyes, which made Izuna blush a bit. And I felt two fingers on his little forehead in the shape of a duck.
"Don't forget this, Izuna. I won't let anyone hurt you; I'll protect you like all our brothers. I just need a little time." I would say. I didn't know what was happening, but it felt good to have these brothers to fight for in this world. Many things awaited me in the future. Now I need to find out if there's a system like in those other novels where the protagonists become overpowered.
She must prepare because in the original series, estimating that Madara said his brothers died when he was 8, that time isn't far off. She needs to hurry immediately.
Izuna was just blushing from the affection shown by his beloved Nee-San, and he nodded and said with determination, "I'll become stronger to protect you too." He said, making Madara or Tamara smile. Her name wouldn't matter anymore; no one would know it. She would change Konoha's history if necessary, considering herself as Madara. After forming the village, she believed it would be similar to the time of the clan wars.
Since they wouldn't be fighting clans, they would eventually fight against other villages. She would work toward unification if it meant bringing fear or respect."