Grand Line, New World.
In the perilous waters surrounding Wano Country, there was an ancient island shrouded in dark clouds.
This island had existed for an unknown number of years. From its appearance, it resembled a giant egg with a black hat. Various colossal trees grew within it, the shortest being a hundred meters tall, while the tallest reached thousands of meters, soaring into the clouds. They drew lightning power from the dark clouds, nourishing the entire island. Deep within this dense, dark forest lived many terrifying Beasts. They were enormous, thick-skinned, and the gloomy environment had accustomed them to slaughter, making them incredibly ferocious.
Because of this, even a nation with powerful samurai like Wano Country was unwilling to approach this island.
But in the past three months, this island, which had only ever echoed with thunder and the cries of Beasts, intermittently began to emit strange sounds.
Just like at this moment...
"Worororo..."
Accompanying it were immense tremors and roars from the entire island.
"Boom... Boom... Boom..."
This caused the ferocious Beasts on the island to react instinctively, scattering and fleeing in every direction.
Although nothing should have been visible in the gloomy world, with the fleeting flash of lightning, one could briefly see the enormous monster constantly circling, winding, and crashing through the ancient forest.
It was a colossal azure dragon, over a thousand meters long and nearly a hundred meters wide, coiling throughout the entire island. It moved with an unstoppable momentum, destroying everything in its path. Thick trees, hard rocks, and even lightning falling from the sky could not hinder it.
After a long while, as if it had vented enough, the massive body slowly came to a halt. Then, it raised its enormous dragon head high, its terrifying, lantern-like vertical pupils hiding boundless excitement. It gazed at the dark sea in the distance, opening its abyss-like maw, where scorching flames coiled.
"Boom..."
A Heat Breath several kilometers long appeared over the sea, illuminating the entire world while also causing the ocean to become scalding and boiling.
A minute later, the flames extinguished, and the colossal body slowly began to shrink, transforming into a giant-like man, seven meters tall, with a burly physique, bulging muscles, and a black kanabo in his hand.
As the kanabo swung, terrifying techniques mixed with black and red lightning appeared one after another, each strike shaking the entire island.
"Thunder Bagua..."
"Descent of Three Worlds: Ragnarok..."
"Vajra: Arrow..."
"Drunkard's Thunder Bagua: Ragnarok..."
"Kundali: Dragon Gaze..."
"Roaring Thunder Bagua..."
"Great Full Thunder Bagua..."
...
If he hadn't restrained much of his power and Haki, the entire island would have been destroyed long ago. But even so, the terrifying power, like a natural disaster, made the island seem as if it had endured a level ten storm. The terrifying Beasts could only lie prostrate on the ground, frozen in fear.
After about three hours of this, everything finally stopped. The enormous, burly figure then slumped onto the ruined ground, picked up a giant sake gourd from beside him, and began to gulp it down.
Visibly, beneath the sake gourd, a wanted poster was pressed: Monkey D. Luffy, Bounty: 30,000,000 Berries.
At the same time, a joyful laugh rang out once more.
"Worororo... This is amazing... Truly amazing... As expected of one of the Four Emperors of the New World, the body of Kaido, known as the King of the Beasts and the World's Strongest Creature. Whether it's this indestructible physique, the power of the top-tier Mythical Zoan Fish-Fish Fruit, Azure Dragon form, or the incredibly powerful Haki, it's all unbelievably strong..."
If anyone from the Beasts Pirates were here now, hearing their Captain's words would surely shock them.
They would never imagine that their Captain was no longer the original Kaido of the Beasts, but a transmigrator from Earth named Kaido.
Three months ago, Kaido was just an ordinary office worker on Earth. His nine-to-five life meant his only leisure activities were watching anime, dramas, and reading web novels.
Naturally, One Piece, one of the three major shonen manga, was among the manga he followed.
However, ever since the One Piece storyline entered Wano Country, with its various twisted characters and endless ups and downs, Kaido's love for One Piece began to wane. His affection for the Straw Hat Pirates even started to disappear, and instead, he felt a bit more sympathy for Kaido, the major antagonist of this arc. But he also knew that villains were destined to be defeated by the protagonist, so he didn't have too many other emotions about the final outcome.
Then, three months ago, when the One Piece anime updated to the Marine hero Koby single-handedly clearing Honeycomb Island and rescuing the diligent Koby, Kaido only took one look and was utterly disgusted.
While it was common in hot-blooded manga for a new version to bring a new god, it was truly rare to use such a clown-like character to debase so many wonderful characters created by the author.
It could be said that the existence of the diligent Koby turned many of the strong characters Oda had created into clowns and jokes.
Among them, the most ridiculous was one of the Straw Hat Pirates: Zoro.
The comparison made one wonder if Zoro's decade-plus of effort was merely for character design, needing to perform fake fights like Koby.
Otherwise, why would Zoro, who pursued the dream of becoming the world's greatest swordsman and trained diligently for over a decade, struggle to defeat Hachi after setting sail, while our diligent Koby, after only two years of effort, could help Blackbeard defeat the great Pirate King Wang Zhi, become a Marine hero, participate in the capture of the Shichibukai, Empress, and finally shatter one of the Tyrant's arms with a single punch?
He also began to understand why some villains in novels always wanted to destroy the world.
Put yourself in their shoes: if you were this villain and discovered that all your efforts, the pain you endured, and everything you lost couldn't compare to a phrase like "200 times effort" and a protagonist's halo, you too would despair of this world.
And so, Kaido was disgusted to death, and for the first time, he felt an aversion to the entire One Piece storyline.
He even thought that if he were to become Kaido, he would definitely eliminate the Straw Hat Pirates completely as soon as they arrived in Wano Country, and then destroy this world. After all, a world that could be saved by such a protagonist wouldn't change anything even if it were saved.
Just like Naruto and Boruto.
Of course, he knew this was impossible; after all, the author of One Piece was Oda, and he was just a mere manga reader.
But with this thought in mind, when he woke up the next day, something incredible happened.
He found that his wish had actually come true; he had truly transmigrated into the world of One Piece and become Kaido of the Beasts.