Onepiece: I'm Aizen Sosuke

Aizen stood calmly, exuding a gentle and serene aura that made those around him feel inexplicably at ease. Despite this tranquility, Garp sensed something deeper—a massive, almost oppressive energy radiating from the young man.

Even though Sakazuki's raw power was evident, Garp couldn't shake the feeling that Aizen existed on an entirely different level. A young man, barely twenty, could stir such unease in a seasoned Marine veteran—it was extraordinary.

"It seems this is the prodigy Zephyr admires so much," Garp mused. "A talent like this is truly rare."

---

Aizen rubbed his temple, glancing at the growing crowd of Marines and the high-ranking officers watching from the distance. "It seems I've caused quite the scene," he said softly.

Sakazuki, standing nearby, appeared slightly unnerved. "Focus on the duel," he muttered. "Losing in front of so many people would be... unpleasant."

His earlier eagerness for the duel had cooled. Now, surrounded by curious eyes and the scrutiny of senior officers, Sakazuki regretted his impulsiveness. Whether he won or lost, the outcome would be difficult to live down.

Aizen's expression remained unbothered. "As I said, this is just sparring. If you're afraid of losing face, how can you grow stronger? This is about improvement, not appearances."

The surrounding crowd grew restless as the tension between the two escalated. Even Fleet Admiral Kong and the other Marine generals watched with interest.

"Let's begin!" Sakazuki declared, his body transforming into molten magma. The ground beneath him sizzled and burned as the intense heat melted the training arena.

Aizen stood still, not even reaching for his weapon.

"What's the matter? Are you giving me the first move?" Sakazuki asked, his voice edged with suspicion.

Aizen smiled faintly. "First move? I've already attacked. You just haven't realized it yet."

---

Fleet Admiral Kong frowned. "Already attacked? Is he bluffing?"

Zephyr, observing nearby, chuckled. "He's not bluffing. If you've fought him before, you'd know what's coming."

Back on the training ground, Aizen's eyes locked onto Sakazuki.

A crushing wave of spiritual pressure, thick and overwhelming, enveloped the molten Marine. The air seemed to grow heavier, and Sakazuki's body trembled under the immense force.

"What... is this?" Sakazuki gasped, his elemental magma form reverting to flesh as he collapsed to his knees. Sweat poured down his face, and he struggled to move under the weight of the pressure.

The crowd, once lively, fell silent. All eyes turned to Aizen, who stood composed in his pristine white robes.

Even Kong and Sengoku, both veterans of countless battles, were stunned.

"This... is this Conqueror's Haki?" Kong muttered.

"No," Garp replied decisively. "It's something else entirely."

Years of experience battling the likes of Roger had taught Garp to recognize Conqueror's Haki. But this force—this *Reiatsu*—was something far more dominant, pressing into the depths of the soul.

---

Aizen approached Sakazuki, who remained kneeling, his body immobilized by the spiritual pressure. Drawing his Zanpakutō slowly, Aizen pointed the blade at Sakazuki's neck.

"Sakazuki," Aizen said with calm finality, "this duel is over. I've won."

The sunlight glinted off Aizen's glasses, obscuring his eyes as he pushed them up with a casual gesture.

Sakazuki gritted his teeth, his face flushed with frustration. "Damn it... to be defeated by sheer presence! You didn't even unsheathe your sword!"

The crowd remained silent, the weight of Aizen's display leaving them in awe. What had started as a simple sparring session had revealed the vast gap between the two combatants—a chasm defined not just by strength, but by dominance of will.