Onepiece: I'm Aizen Sosuke

Aizen sheathed his Zanpakutō with a calm demeanor, the cold glint of its blade fading into the scabbard as he turned away from Kaido. His composure was unshaken despite the chaos he had caused moments before.

Kaido's chest heaved, blood streaming down the massive gash inflicted by Aizen's blade. Fury, humiliation, and frustration swirled within him as he struggled to accept the scene before him. Aizen, the enigmatic figure who had crushed his crew and scarred his pride, now dismissed him with the same indifference one would show to an insignificant insect.

"You'll leave just like that?" Kaido bellowed, his voice trembling with rage. "After slaughtering my men, after wounding me, you walk away as if nothing happened?"

Aizen stopped, his back to Kaido, and cast a glance over his shoulder. His glasses reflected the sunlight, obscuring the sharpness of his gaze, but his tone carried the weight of absolute dominance.

"I told you already. I got what I came for," Aizen replied. "I spared your life, Kaido, not out of mercy, but because I expect you to grow stronger. Become a worthy opponent for me in the future. Otherwise, your existence will remain meaningless."

Kaido clenched his fists, veins bulging with restrained fury. The words stung more than any physical wound, but Aizen paid no heed as he vanished into the horizon with a burst of Shunpo.

---

Three Months Later

The New World was abuzz with tales of a mysterious figure who had left a trail of destruction wherever he went. Pirates trembled at the mere mention of his name, though few knew his true identity. Aizen, now a phantom of the seas, had brought devastation to the ranks of the Golden Lion's crew, the Whitebeard Pirates, and countless others.

Despite his dominance, Aizen's actions were puzzling. He didn't pillage, conquer islands, or wage war against the Marines. He operated alone, his motives shrouded in mystery. Some speculated he was a bounty hunter, while others believed he was a rogue Marine. No one could pin him down.

This anonymity served Aizen well, allowing him to sail freely without the weight of the World Government or major pirate factions bearing down on him. Garp's insistence on secrecy proved to be a wise move, keeping Aizen's true identity as a Marine hidden from the world.

Yet, for all his destruction, Aizen found little satisfaction. The pirates he defeated, while numerous, were far from notable figures, providing minimal gains in unlocking his abilities. Despite his immense power, Aizen's journey was far from over.

---

Aboard the Oro Jackson

The famed Roger Pirates were navigating the New World, their ship, the Oro Jackson, cutting through the waves with ease. The crew was in high spirits, sharing stories of their adventures.

"Roger, have you heard about this mysterious guy stirring up trouble?" Rayleigh said, leaning casually against the railing. "They say he's taken down some of Whitebeard's and Golden Lion's men. Even Kaido got a taste of him."

Roger chuckled, the ever-present grin on his face widening. "Sounds like a bold one. Not many would dare provoke those monsters, let alone survive the encounter."

Rayleigh smirked. "He reminds me of us back in the day. Always poking the bear, making enemies left and right."

"But he's different," Shanks chimed in, sitting cross-legged nearby. "He's not chasing fame or treasure. From what I've heard, he's after something… deeper."

The crew fell silent for a moment, pondering Shanks' words. It wasn't often that a pirate's actions defied the usual motives of greed or power.

"Well, whoever he is," Roger said, breaking the silence, "he's made the New World a lot more interesting. I wouldn't mind crossing paths with him someday."

The crew laughed and toasted, their camaraderie unshaken despite the turbulent seas ahead. Unbeknownst to them, their paths and Aizen's were destined to intersect, setting the stage for a clash that would shake the world to its core.