This is the back story of MC and will have almost 0 impact on the story except for her being easily angry. It is for character building and for those who are interested.
"Damn it, " a pink-haired girl shouted.
"Why did I have to be born as Sakura?" She asked, but there were only trees surrounding her.
[Your character was found to match Sakura. So, an unknown being had you reborn as Sakura in this world for his/her entertainment.]
A voice that could be considered a typical AI voice in movies and games sounded in her mind. But hearing it made her fume in anger.
"What do you mean by matching character? I wasn't a fangirl with low EQ," she replied with fury in her voice. She could swear to god that if a human's head could burst due to extreme anger, then her head would be in a million pieces now.
After all, someone had taken her out of her normal world by probably killing her or manipulating the circumstances to kill her, without considering her choice, or the sadness her friends and family must have felt because of her death or disappearance.
On top of that, she was reborn as Sakura, the useless idiot fangirl whose only advantage was a better memory and her chakra control because she had very little chakra, which wouldn't help her in the long run. Sakura would be an excellent medic-nin, but wouldn't have survived if she hadn't had the plot armour thicker than the Great Wall of China.
After all, Tsunade, with Senju heritage and over a decade of chakra storage, lost to Madara. Meanwhile, Sakura, with less than three years of meager chakra storage, fought with Kaguya. And this AI voice, which is probably a system, was saying she was like Sakura in her past life.
[Your anger issue and your violent temper match Sakura.]
"I had anger issues due to the disorder, not because some emo boy didn't talk to me. Don't compare me with her," she replied.
The voice remained silent, knowing that talking to her would only increase her anger now.
"Why don't you talk now?" she asked. She waited a few seconds before repeating the question.
Hearing nothing in return, she walked to a nearby tree and sat down, leaning against it.
"I developed an anger disorder at a young age. So, I was always a troublesome kid and a bad friend. I was prone to anger, but my family and a few friends always cared for me. I never felt alone. They would create a happy, funny, and light atmosphere around me. They taught me their anger control methods, but most didn't work because my anger came from my brain chemistry, not emotions. I was similar to those like aggressive animals in the wild, quick to fight over anything," she said, perhaps to the voice, or maybe just to herself.
"I had a happy life except for the times others came looking for trouble. I wouldn't meddle in other people's business, but if someone meddled in mine, it wouldn't end well. So, I used to get into fights easily. The classmates and teachers knew, but some would still try to irritate me and make me angry. Not all days were happy, but with my friends and family, life was pretty fun." She became silent, remembering her life.
After a long silence, she asked the voice in a low voice. "How did I die?"
[You fought with someone near the stairs when she pushed you in anger, and you fell from the stairs to your death.]
"Oh," the cause of her death didn't have any impact on her, maybe because she had already accepted her death after all, she'd been reborn, regaining her memories little by little, up until today. Today, she remembered the rest of her memory, triggering a panic that made her unstable. That's why she'd come to the ninja training ground, to clear her head and vent her frustration.