Izuna

The morning sun broke through the mist, casting long shadows over the Hidden Leaf Village. Team 7 stood at the entrance to the Hokage's office, waiting for their next mission briefing. As usual, Naruto's eagerness was evident, his hands resting impatiently on his hips. Sasuke stood slightly apart, arms crossed, his expression unreadable. Tobirama, meanwhile, simply observed, his mind already processing the events to come. He had already seen it all in his past life—every mission, every fight, every twist. But this mission... it still held a certain weight for him.

"You're all here," Hiruzen Sarutobi said, his voice carrying a hint of concern. "Today, you'll be taking a C-rank mission."

Naruto bounced on his toes. "A C-rank mission? Finally, something more exciting than sweeping the village!"

"Don't get too excited," Kakashi interjected, his eye barely visible under his mask. "C-rank missions are usually safe. But this one is different. You'll be escorting a bridge builder named Tazuna to the Land of Waves."

Tobirama's mind already raced ahead, analyzing every possible outcome. This mission will escalate. It's not just a simple escort. I know what happens next.

Hiruzen continued, "Tazuna is building a bridge that will help the Land of Waves, but there are some dangers on the road. Keep your guard up. It could be more dangerous than it seems."

Sasuke narrowed his eyes, instinctively sensing there was more to this than they were being told. 'A bridge builder? What's really going on here?'

Naruto looked confused but excited. "A bridge? Sounds boring. But we'll protect him anyway, right?"

Tobirama, unfazed, nodded. "We'll get the job done. But I suggest we stay vigilant. This mission will be far from simple."

---

The journey to the Land of Waves began uneventfully, with the group traveling by foot. Tazuna, the bridge builder, walked ahead, carrying only a small pack. Naruto's restlessness was palpable as he bounced from one foot to the other.

"I can't believe it's just a bridge mission!" Naruto complained.

Sasuke shot him a quick glance. "Don't get too cocky. There's always more to a mission than what's on the surface."

Tobirama glanced at the two of them with mild amusement. Sasuke's instincts are sharp, but he's still too young to fully understand the weight of this mission. And Naruto... he's got potential, but he needs to stop thinking everything is a game.

As the group approached the bridge leading into the Land of Waves, the fog began to roll in, thickening around them. The atmosphere shifted. Sasuke was the first to react, his hand instinctively going to his kunai pouch.

"Something's wrong," Sasuke muttered, eyes scanning the area.

Tobirama's mind, already working at full capacity, knew what was coming. The Hidden Mist's former Swordsman, Zabuza Momochi, is near. This mission won't end with just escorting a bridge builder.

"Stay on your toes," Kakashi ordered. "Something's out there."

Without warning, a figure appeared from the mist—a large, imposing man wielding a massive sword. The figure was cloaked, his face hidden by a mask, but there was no mistaking the deadly aura around him.

Zabuza... Tobirama thought, his hands instinctively moving toward his weapons. I know how this plays out. But Sasuke... His gaze shifted to the Uchiha. This will be a test for you.

The masked figure smirked, his voice low and mocking. "I was wondering when you'd show up. This mission was never as simple as you were led to believe."

Kakashi's Sharingan flickered to life, and the battle began. But Tobirama's mind wasn't entirely on the fight. He watched Sasuke carefully, noting the tension in his posture, the way his eyes darted from opponent to opponent. Sasuke's got more potential than he knows. If he awakens his Sharingan here...

The fight between Kakashi and Zabuza raged on, but Tobirama's focus never wavered. He was waiting for the right moment. Then, suddenly, Sasuke's eyes widened, and in an instant, he leapt into action, his Sharingan activated. One tomoe spun in his eyes, followed quickly by two.

Tobirama's heart skipped a beat, but he quickly masked his surprise. 'Two tomoe already? And here... in this moment?'

Sasuke was different now. He was faster, more focused. He moved with the precision of a trained fighter, his kunai striking with deadly accuracy. Zabuza, for the first time in the battle, hesitated.' Impressive. The Sharingan is awakening faster than I anticipated.'

Tobirama stepped forward, ready to assist, but Kakashi was already locking blades with Zabuza. 'Sasuke, you've just crossed a threshold. You're evolving in ways I never expected. But this is just the beginning. Can you handle it?'

Meanwhile, far from the battlefield, in a hidden cave, Madara Uchiha sat in quiet contemplation, his eyes glowing red with the reflection of his Sharingan. He had been watching the battle unfold through his eyes, a twisted grin forming on his face as he watched Sasuke's progression.

"Yes, it's him. The blood of Izuna courses through his veins. I knew it. I could feel it the moment I laid eyes on him..."

Madara's hands tightened into fists, his heart racing." Sasuke Uchiha... Izuna's reincarnation. He is awakening the Sharingan at an unprecedented rate. He'll surpass everything I've dreamed of... and he will be the key to my plans."

Back on the battlefield, Sasuke's Sharingan flared, now fully activated with three tomoe. He was moving faster, his every action deliberate, precise, and deadly. The fight was changing in his favor.

Zabuza's grin faltered, and he was forced to retreat, the power of Sasuke's newly awakened Sharingan making him reconsider his approach.

Tobirama, watching intently, felt uneasy knowing his knowledge of canon went down the drain. 'This is it. Sasuke's awakening... It's happening faster than I could have imagined. I am probably the reincarnation of second hokage. Is he Izuna?'

ROB was watching this from heaven.

"HAHA! I AM A GENIUS! Let's see how you will deal with this!"