What if Naruto was Trained by Sosuke Aizen

Naruto stood quietly in the center of the training ground, his presence calm yet unnerving. The dust around him seemed to lose its weight, drifting lazily in the air as if gravity itself had been suspended. A palpable wave of chakra emanated from his body, rolling outward in a visible ripple that stirred the ground and sent clouds of dust swirling around him.

"This chakra..." Sasuke's eyes widened in shock, and he instinctively took a step back. The oppressive force radiating from Naruto was unlike anything he had ever felt. It wasn't just chakra—it was something more, something deeper and more terrifying. It felt as though the very air around him had thickened, slowing his movements and weighing down his spirit.

Naruto's smile was gentle, but there was a chilling edge to it. "Are you ready to dance with the dust, Sasuke?"

Sasuke gritted his teeth, his pride refusing to let him back down. "As expected of you," he muttered, his voice low. With a swift motion, he tore off his training jacket, revealing the heavy weights strapped to his body. The weights hit the ground with a resounding thud, creating small craters in the dirt.

The students gasped in unison. "He's been wearing weights this whole time?!" one of them exclaimed.

Even Iruka-sensei looked stunned. "Is this the genius of the Uchiha clan?" he murmured under his breath.

Sasuke's lips curled into a cold smile. "Genius? Don't insult me by calling me that. Everything I've achieved is through hard work, not some label."

Without wasting another moment, Sasuke formed a series of hand seals. "Shadow Clone Technique!" Four identical Sasukes appeared in an instant, surrounding Naruto from all sides. The clones moved in perfect synchronization, their attacks a blur of motion. One hurled a barrage of shuriken, while another launched a massive fireball that scorched the air and distorted the space around it.

The heat from the fireball was so intense that even the students watching from a distance felt its searing presence. "The Uchiha clan's Fire Release is incredible!" someone whispered in awe.

Iruka's eyes narrowed as he watched the battle unfold. "Such speed, precision, and power... Sasuke truly is a prodigy." His thoughts drifted to another Uchiha prodigy—Itachi, who had graduated from the academy at an impossibly young age and joined the Anbu. Sasuke's talent seemed to rival his brother's, and Iruka couldn't help but feel a mix of pride and unease.

But Naruto remained unfazed. As the shuriken and fireball closed in, his aura surged once more. The dust around him erupted into the air, and in the blink of an eye, he vanished.

"Shunpo," Naruto murmured, his voice calm as he reappeared behind one of Sasuke's clones. With a single, precise strike, the clone dissipated into smoke. Naruto's movements were fluid and effortless, as if he were dancing rather than fighting. He dodged every attack with minimal effort, his body moving with an elegance that left the onlookers breathless.

"So graceful," Sakura whispered, her eyes wide with admiration. "Naruto-kun's taijutsu is on another level."

Sasuke's clones fell one by one, leaving only the original. Breathing heavily, Sasuke glared at Naruto, his Sharingan now active. The crimson eyes with a single tomoe spinning slowly gave him an almost predatory look.

"When did you awaken the Sharingan?" Naruto asked, genuinely surprised but pleased for his friend.

"Just recently," Sasuke replied, his voice tinged with pride. "And now, I can see everything. Your movements, your weaknesses—they're all clear to me."

Naruto smiled faintly. "Impressive. But seeing and reacting are two different things."

The two clashed again, their movements a blur of speed and precision. Sasuke's Sharingan allowed him to predict Naruto's actions, but Naruto's reflexes and adaptability kept him one step ahead. Despite the weights still strapped to his body, Naruto moved with a grace that made it seem as though he were floating.

"You're slowing down, Naruto!" Sasuke taunted, though his voice betrayed a hint of frustration. "Or maybe it's just that my eyes see everything now."

Naruto chuckled softly. "Perhaps. But let's see how far those eyes can take you."

With that, Naruto stepped back, his expression turning serious. He raised his hand, and one of his shadow clones approached, handing him his Zanpakuto, Kyoka Suigetsu. The blade gleamed ominously as Naruto held it aloft.

"Since you're so eager to see it, I'll oblige," Naruto said, his voice calm but carrying an undercurrent of power. "But be careful, Sasuke. This is not something you can take lightly."

The dark green spiritual pressure surrounding Naruto intensified, swirling around him like a storm. "Break, Kyoka Suigetsu," he intoned.

The blade in his hand shattered like glass, dissolving into the air. For a moment, everything seemed normal, but then the students and even Iruka felt a strange disorientation, as if their senses had been subtly altered.

"What just happened?" one of the students muttered, rubbing their eyes.

Sasuke frowned, his Sharingan scanning the area. "Is this your Shikai? It doesn't look like much."

Naruto's smile was enigmatic. "Appearances can be deceiving."

Sasuke didn't wait for further explanation. He lunged at Naruto, kunai in hand, aiming straight for his chest. The blade pierced through Naruto's body—or so it seemed. There was no blood, no reaction. Instead, Sasuke felt a searing pain in his own abdomen. He looked down to see Kyoka Suigetsu's blade embedded in his side.

"What... how?" Sasuke stammered, his vision blurring as he collapsed to his knees.

Naruto knelt beside him, his expression gentle but firm. "The sky is colorless, Sasuke. It doesn't deceive you—your eyes do."

As Sasuke's consciousness faded, Naruto's words echoed in his mind. The last thing he saw was Naruto's calm, reassuring smile.