Baldimore Kingdom.
Nestled in the first half of the Grand Line, within the Seyadis Sea—Karakuri Island.
A land famed as the "Birthplace of Geniuses," hailed by many as the Kingdom of the Future.
The island lies shrouded year-round in storm clouds and snow. Bitter cold encases its shores in thick layers of ice—a natural fortress against the world.
Reaching this place is no simple feat. Aside from a monthly supply ship or the rare passing warship, only specialized icebreakers can force a path through the frozen sea.
But this isolation proved the perfect cradle for an assembly of geniuses and madmen…
At the kingdom's edge sprawls the forbidden Mechanical Beast Forest.
Locals call it a land of nightmares—a zone of no return.
The woods teem with mechanical creatures, each one a twisted marvel of "genius" Vegapunk's invention. These cybernetic beasts harbor a deep-seated hostility toward all outsiders.
And deep within that mechanical wilderness stands a vast fortress of steel and iron—the heart of Vegapunk's daily life and research.
What no one in the kingdom suspects is this:
The man they revere as their brightest hope is also the secret leader of a group devoted to forbidden science.
MADS.
A name that means "madness"—an organization founded by Vegapunk himself.
Operating from the shadows, MADS quietly recruited the world's most brilliant—and most unhinged—scientists, all united by a single purpose: to pursue research the World Government had declared taboo.
Among its members: the future king of Germa, Vinsmoke Judge.
The Plague, Queen, one of the All-Stars of the Beasts Pirates.
And the infamous, sadistic scientist, Caesar Clown.
This cabal of geniuses and maniacs probed every boundary: weapons, biology, bloodlines, Devil Fruits—nothing was off-limits.
Their ambition? To use science to trespass into the realm of the gods.
And they'd already made their first breakthrough:
The "Blueprint of Life"—the Lineage Factor.
If nothing unexpected happened…
Thirteen kilometers outside the sealed Mechanical Beast Forest, under the cover of night, two figures—one hulking, one small—crept into view.
They looked down at a silent, sleeping village below, madness gleaming in their eyes.
They were none other than a young Queen and an eight-year-old Caesar Clown.
Obsessed with bacteria and microorganisms, the two had spiraled into jealousy and mania after Vegapunk and Vinsmoke Judge's team achieved a research breakthrough.
Both were called "genius"—how could they stand being left behind?
Especially with personalities already twisted and cruel.
Animal experiments no longer satisfied them.
Night after night, they snuck out to hunt the villagers in the surrounding towns.
With the island perpetually buried in snow and ice, disappearances were common, and no one thought much of it.
Most assumed the missing had simply been swallowed by the blizzards.
But once the two learned of the "Blueprint of Life"—the Lineage Factor—from Vegapunk, their madness could no longer be contained.
Test subjects weren't enough.
They needed people.
People!
More people!!!
And so, in a single night, two-thirds of the village's population vanished.
No one knew where they'd gone.
But that didn't stop the surviving villagers from reporting the tragedy to the kingdom and the Marines.
In their frenzy, Queen and Caesar never considered the consequences.
It was like something out of a horror story—Orochimaru snatching bodies for experiments in Konoha.
In such a technologically advanced nation, with so many people going missing, it was impossible not to suspect human experimentation.
The kingdom sent investigators, but they found nothing.
The Baldimore branch of the Marines reported straight to headquarters.
And at Marine HQ, news of forbidden human experiments was immediately relayed to the World Government.
After days of investigation and infiltration by the World Government's CP agents, the truth finally came to light:
An illegal research group—MADS—dedicated to forbidden science.
And Vegapunk's thesis on the Lineage Factor…
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