Taiyou Uchiha awoke with a start, his heart pounding in his chest. He sat up quickly, breathing heavily as fragmented memories flooded his mind. He looked around the room, taking in the familiar surroundings of his bedroom in the Uchiha district. The morning sunlight filtered through the window, casting a warm glow over the wooden furniture and scrolls scattered on his desk.

"I... I'm alive?" Taiyou whispered to himself, touching his chest where he remembered the fatal blow. The last thing he recalled was Itachi's cold, merciless eyes and the feeling of his life slipping away. But then, everything had gone black, only for him to wake up here, seemingly unharmed.

His head throbbed as memories from the future merged with his present thoughts. He was Taiyou Uchiha, a seven-year-old shinobi of the prestigious Uchiha clan. The memories were disjointed but clear enough to piece together a horrifying truth: the Uchiha massacre was imminent, and he had already lived through it once.

Taiyou's eyes widened as he remembered the massacre in vivid detail. He had watched helplessly as Itachi slaughtered their clan, including his beloved family. The pain and rage had triggered the evolution of his Sharingan into the Mangekyō Sharingan, a legendary power supposedly once possessed by Madara Uchiha. His eyes had burned and bled, draining his chakra and leaving one of his eyes blind. It had saved him, but it wouldn't again unless he unlocked the Mangekyō Sharingan once more.

"I can't let it happen again," Taiyou vowed silently, determination steeling his resolve. He had one chance to change the future and save his family and his clan.

He swung his legs over the side of the bed and stood up, his limbs feeling slightly foreign but strong. His chakra reserves seemed to have increased, but he knew he needed to practice chakra control again. As he walked to the door, he heard the familiar sounds of his family preparing breakfast. The aroma of miso soup and rice wafted through the air, comforting in its normalcy.

Taiyou stepped into the hallway and made his way to the kitchen. His younger sister, Aiko, was setting the table, her cheerful humming bringing a smile to his face. His parents, Arata and Hana, were busy with the meal, exchanging playful banter. Seeing them happy like this made him even more committed to saving them. He was only seven years old, but that wouldn't stop him.

"Good morning, Taiyou!" Aiko greeted him with a bright smile. "You're up early today."

"Good morning, Aiko," Taiyou replied, ruffling her hair affectionately. The sight of his family, alive and well, filled him with a mixture of relief and urgency. He had to protect them, no matter what.

As they sat down to eat, Taiyou couldn't help but steal glances at his parents and sister, committing their faces to memory. He had seen them perish once and wouldn't let it happen again.

"Taiyou, are you okay?" Hana asked, noticing his distracted expression.

"I'm fine, just thinking about my training," Taiyou replied, forcing a smile. "I want to get stronger."

"You'll become a great shinobi, Taiyou. Just keep working hard," Arata encouraged, patting his son on the back.

After breakfast, Taiyou excused himself and headed outside. He needed to clear his mind and think of a plan. The training ground seemed like a good place to start, a familiar spot where he could focus on honing his skills.

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On his way, Taiyou encountered Akira, his childhood friend and fellow Uchiha. "Taiyou! Ready for some training?" Akira called out, waving him over.

Taiyou smiled, grateful for the distraction. "Always. Let's see if you can keep up today."

As they sparred, Taiyou couldn't shake the feeling of déjà vu. He had lived this day before, but this time, he was determined to make a difference. The sparring session was intense, and Taiyou pushed himself harder than ever, drawing on his knowledge of future events to gain an edge.

"You're on fire today," Akira remarked, panting as they took a break. "What's gotten into you?"

"Just... feeling motivated," Taiyou replied, his thoughts drifting to the looming threat. He had to be stronger, faster, better prepared.

After training, Taiyou decided to visit Shisui Uchiha. He remembered that Shisui had died before the massacre, but he was the only one Taiyou believed could stop Itachi. Plus, Shisui had always been a great help in training. Shisui's wisdom and skills were unparalleled, and Taiyou needed his guidance now more than ever. Shisui had taken Taiyou under his wing shortly after Taiyou had joined the academy last year.

"Taiyou, what brings you here?" Shisui asked as Taiyou approached him near the Naka River.

"I need your help, Shisui. There's something I have to tell you," Taiyou said, his voice steady but urgent. He knew he had to be careful about revealing too much, but Shisui needed to understand the gravity of the situation.

Shisui's eyes narrowed in concern. "What is it, Taiyou? You seem different today, more... determined."

Taiyou took a deep breath and began to explain, choosing his words carefully. "I... I have reason to believe that something terrible is going to happen to our clan. We need to be prepared."

Shisui listened intently, his expression serious. "This is not something to be taken lightly, Taiyou. If what you say is true, we must act quickly. But how do you know this? You're only seven years old."

"I know it sounds unbelievable, but I have... memories," Taiyou said, struggling to find the right words. "Memories of things that haven't happened yet. I remember your suicide note."

Shisui's eyes widened slightly, and he subtly activated his Sharingan to observe Taiyou closely. "My suicide note? How could you possibly know about that?"

Taiyou noticed Shisui's intense gaze but continued, "You thought it would stop the coup, but it didn't. It only made things worse."

Shisui's expression turned grave. "My suicide note... How could you possibly know about that?"

"I don't know how, but I do," Taiyou insisted. "Please, Shisui, you have to believe me. We need to find a way to stop this from happening."

Shisui was silent for a moment, then nodded. "We'll figure this out together. You're not alone in this."

Taiyou sighed with relief. "Thank you, Shisui. I was worried you wouldn't believe me."

Shisui gave a small smile. "It's a lot to take in, but I can see you're telling the truth. You've always been a serious kid, Taiyou. But now, you seem like you've aged years overnight."

Taiyou nodded. "I feel like I have. There's so much to do, so much to prevent."

Shisui stood up and looked at the setting sun. "We should start by gathering more information. We need to know exactly what the village is planning and what the clan's next move is. Only then can we figure out a way to stop this from happening."

Taiyou agreed. "You're right. We need to act carefully and strategically."

"We'll train harder, too," Shisui added. "We need to be at our best if we're going to change the future."

Taiyou's eyes lit up with determination. "Yes. We'll train and gather information. We'll stop this massacre and save our clan."

Shisui placed a hand on Taiyou's shoulder once more. "Remember, you're not alone in this. We'll face whatever comes together."

As Taiyou turned to leave, Shisui kept his Sharingan activated, continuing to observe Taiyou closely. He didn't reveal to Taiyou how much he could see, but Shisui was now certain of the truth in Taiyou's words. The conviction and urgency in Taiyou's emotions were genuine, and that was enough for Shisui to fully trust him.

As the day drew to a close, Taiyou felt a renewed sense of purpose. He had one chance to change the future, and he wouldn't waste it. With Shisui's support and his own determination, he was ready to face whatever challenges lay ahead.

Just as Taiyou was about to leave, he heard a familiar voice. "Shisui, we need to talk." It was Itachi Uchiha, standing a short distance away, his expression unreadable.

Taiyou froze, his heart pounding. Shisui's eyes flickered with surprise and then concern.