Naruto: I am Uchiha Shirou

The sharp sound of metal clashing echoed continuously in the dim, enclosed training room. Along the walls hung dozens of mechanisms for firing metal senbon and kunai. As the wires snapped, a relentless barrage of senbon and kunai was launched toward the center.

Within the spacious training chamber, only occasional arcs of electricity flickered through the air, illuminating the room briefly. The crisp sounds of senbon and kunai hitting the ground filled the air.

"I can see it! With the dynamic vision of my three-tomoe Sharingan, what I need now is for my body to catch up!"

Amid the tearing sound of air, Shirou, under the effects of Lightning Release Chakra Mode, moved so fast that he became almost imperceptible to the naked eye. Only faint afterimages could be seen when he momentarily twisted his body to evade or counter.

The powerful dynamic vision of his three-tomoe Sharingan spun rapidly, allowing Shirou to see the incoming projectiles from all directions with absolute clarity. A smile of satisfaction spread across his face.

"The kunai and senbon seem slower than two months ago! No, it's because my eyes have become stronger—there's still untapped potential!"

With the Kusanagi sword in his hands, Shirou alternated between his left and right hands, slashing and deflecting the torrent of kunai and senbon raining down like a storm. Each projectile clattered to the ground after being deflected, accompanied by the sharp ringing of metal striking metal.

The intense training and luxurious setup were things only someone of his status could afford. The floor of the chamber was soon littered with fallen kunai and senbon, a testament to the rigorous training session.

Moments later...

The metallic senbon and kunai clattered rhythmically onto the stone floor, as though someone had knocked over a bucket of them. In reality, this was the result of Shirou's hands wielding the Kusanagi sword at an unimaginable speed in a very brief period.

"My ocular power now far surpasses that of an ordinary three-tomoe Sharingan."

Panting heavily, Shirou stood amidst the scattered weapons, the sound of kunai and senbon still ringing in his ears. His arms were sore and trembling from the intense exertion, but his face bore a triumphant smile.

"No wonder, in the original story, Orochimaru was both awed and covetous when he witnessed Uchiha Sasuke's training in a similar chamber. He even remarked that no amount of training could allow ordinary ninjas to surpass the Uchiha bloodline."

As he caught his breath, Shirou marveled at the newfound strength he felt after fully integrating the ocular powers of Elder Setsuna. A smile of satisfaction crossed his face.

"Orochimaru lived in Konoha for so long—how could he not have seen three-tomoe Sharingan before? What shocked him must've been that Sasuke's Sharingan was far stronger, which ignited his greed for these eyes."

"Some talents are simply innate. No wonder the original story often emphasized that Sasuke's eyes had the potential to awaken the Mangekyou Sharingan. It's because his Sharingan was extraordinarily powerful from the very beginning."

Narrowing his eyes, Shirou delved into deep thought, analyzing the nature of his power. Finally, he concluded: only Sharingan with strong ocular power has the potential to awaken the Mangekyou Sharingan.

"The awakening of the Mangekyou depends not just on emotional stimulation but also on the strength of one's ocular power. The stronger the power, the easier the awakening—or rather, the lower the threshold. Perhaps even the Eternal Mangekyou Sharingan only requires sufficient ocular power to achieve, considering Indra awakened his as Eternal from the start..."

Even among three-tomoe Sharingan, there were significant differences in strength. This was the essence of ocular power.

"Shirou! You're being reckless again!"

As Shirou pondered, Mikoto, who had been observing from the side, walked over with a concerned expression. She approached him, her tone filled with worry.

"It's only been two months. While your Body Flicker Technique and swordsmanship have improved tremendously, the sheer density of that senbon and kunai—I could barely keep up with my eyes, and yet you—!"

Mikoto handed him a warm towel as she spoke. Shirou accepted it, wiping the sweat from his forehead, and replied with a laugh:

"Mikoto, your Sharingan also holds even greater potential. You need to push yourself further instead of being content like the average clansmen."

Uchiha Mikoto's three-tomoe Sharingan had evolved after Elder Setsuna's passing, indicating it still had untapped potential.

Hearing Shirou's words, Mikoto seemed to realize something. A look of astonishment flashed in her eyes as she exclaimed:

"Shirou, your eyes!"

She stared at the clear three-tomoe Sharingan in Shirou's eyes. He smiled and nodded. "My Sharingan can see even further now. Mikoto, you'd better keep up."

Although his tone sounded teasing, it carried an undeniable pressure. For the first time, Mikoto felt a sense of inadequacy in front of Shirou.

For years, she had always been the strong one, protecting him. But at some unknown point, their roles had reversed.

"Don't worry, Shirou. I'll keep up with you."

At that moment, the training room door suddenly opened. Uzumaki Kushina walked in and pouted as she saw the two of them.

"Mikoto, we agreed to train together, and yet you came here so early again."

Mikoto smiled and greeted her. In the small town of the Land of Rain, having access to such a high-class training chamber was proof of their status. Furthermore, the recent stability in the region allowed them to focus on their training.

Kushina glanced at the kunai and senbon scattered across the floor, her sharp ninja instincts immediately noticing the sheer scale of the training. Her face showed a mix of shock and envy.

"Two months… I'm so jealous of you Uchiha and your Sharingan."

Kushina's envy was genuine. With the three-tomoe Sharingan, learning any jutsu became incredibly fast. Meanwhile, she had to train step by step, which often left her feeling frustrated.

Mikoto, however, laughed and teased her friend:

"Kushina, you're jealous of how fast Sharingan users learn? With your chakra reserves, you can practice jutsu dozens, even hundreds of times in a day. The Uzumaki lineage isn't weak at all, you know!"

The three of them shared a lighthearted moment, laughing and exchanging training insights. After all, two heads are better than one, and much of their recent progress was thanks to Kushina's efforts in acquiring the Second Hokage's jutsu records.

"I've now managed to combine Lightning Release Chakra Mode with the Body Flicker Technique, aiming purely for speed. As for the hundreds of sword techniques recorded by the Second Hokage, styles like Three-Sword and even Eight-Sword techniques are too complex for me to master quickly.

Instead, I've chosen techniques like Iai (Quick Draw), which focus solely on speed..."

As Shirou explained his progress, Kushina couldn't help but admire it.

"Techniques that focus purely on speed have significant flaws, but with your Uchiha Sharingan, those flaws are completely mitigated. It's like these sword techniques were made for you Uchiha."

Indeed, the greatest weakness of extreme speed was the inability to track enemy movements. But for a Sharingan user, this flaw was effectively nullified.

"I have some talent in genjutsu, so I'm considering combining Sharingan illusions with the Body Flicker Technique. But it's just a rough idea for now—I'll need more time to refine it."

Mikoto smiled as she shared her progress while committing Shirou's insights to memory. The Sharingan's greatest strength lay in its ability to learn and replicate. Even if she couldn't utilize Lightning Release as effectively, she could still adopt Shirou's swordsmanship and Body Flicker training methods.

As the two exchanged ideas, Kushina rolled her eyes at their camaraderie. She crossed her arms and declared:

"I have a ton of chakra! I'll just burn through more of it if I have to. I've been training with the chakra burst techniques recorded by the Second Hokage. They're wasteful, sure, but they suit me just fine!"

Shirou looked at her with a mix of admiration and exasperation. Her approach was simple yet effective: brute force backed by her massive chakra reserves. While other ninjas trained to conserve chakra, Kushina didn't need to bother.