Reincarnated in Naruto World with a System

Uchiha Tatsumi rubbed the muscles of both legs. Surprise flickered across his young face. The sheer power that his legs could now unleash was unprecedented. When caught off guard, it left him in quite a difficult situation. "This strength and speed are beyond anything I was before..."

He realized he could probably defeat ten of his past selves. He had thought he was strong before, but now it was clear: he'd just been a rookie. He'd let himself fall for one of the great delusions of the Ninja World, perhaps the deadliest.

Tatsumi seriously assessed his previous Taijutsu. It had been ordinary among his peers. But the Taijutsu he just performed, enhanced by Chakra, was already far superior. The technique was from a scroll left by Uchiha Kagami. Despite practicing it, Tatsumi had struggled to execute it effectively. Previously, he could only move two or three meters at a time, exhausting all his strength. But now, the distance had more than doubled, and the speed was incomparable.

More importantly, even though Tatsumi's body felt the strain of exertion, he didn't feel the usual sense of exhaustion. It seemed he hadn't even exerted his full strength. Could just one upgrade bring such a qualitative leap in his Taijutsu?

As the pain in his body gradually eased, Tatsumi slowly stood up, brushing the dust off his clothes. His black eyes gleamed with joy. "Let's try again!"

This time, he didn't dare continue inside the house. He didn't own much and couldn't risk breaking other items. He stepped outside into the courtyard, gathering Chakra in his calves again. This time, he deliberately controlled the power, avoiding the loss of control he experienced before. However, his physical strength was depleted, and he could only move less than three meters.

"Physical strength is still lacking," Tatsumi murmured. He needed to retrain to adapt to his new strength. As a ninja, being unable to control one's strength in battle could be fatal.

After another attempt, slightly better than the previous one, Tatsumi's Chakra was nearly exhausted. The system's mechanical voice announced, "Host exercises seriously. Ninja points +1. Current balance: 890 ninja points."

Hearing this, Tatsumi smiled. "Points truly are beautiful."

After a short rest, Tatsumi went back inside. He had to report to the Academy the next day and couldn't stay up all night experimenting. He needed to conserve his strength.

Suddenly, his stomach growled. "I'm hungry," he muttered. The physical exertion had taken its toll. Fortunately, he had some instant noodles in the refrigerator. "Looks like I'll be like Naruto soon enough," he joked.

While eating, the system sent a congratulatory message: "Congratulations to the host for completing a single attribute upgrade on the first day. The goal of becoming the strongest ninja on the planet is one step closer!"

"Continue striving, host. A new mission is now available."

Curious, Tatsumi took a look. The new mission required him to advance at least one of his attributes to Level 8 before graduating from the Academy. Failure would result in all attributes being reset to zero, and he would have to wear women's clothing for six months!

Tatsumi nearly spat out his noodles. "Level 8? That's Chunin level! Why not just kill me? Reaching Chunin level before graduation is too difficult! And the punishment is so cruel!"

Clutching his head, he calculated the ninja points needed for each level. Upgrading from Level 0 to Level 8 required a total of 33,000 points. Considering his current highest-ranked attribute, Taijutsu, was only at Level 3, it seemed impossible. Even with diligent training, it would take years to accumulate that many points.

"System, I can't complete this mission. Give me a simpler one!" he protested.

"The mission cannot be changed. I suggest the host continues to upgrade the highest-ranked attribute and takes it one step at a time."

"I've fallen into a pit," Tatsumi sighed, clutching his head even tighter. Taijutsu at Level 3 was sufficient for now. He decided to save the remaining 890 points for emergencies.

After cleaning up the house, he lay on his bed. In his dreams, he saw himself defeating the Five Kage, Madara, and Kaguya, ultimately becoming the strongest ninja in the world. But in the end, he found himself wearing women's clothing.