Wano Country, five thousand meters above the sea off Onigashima.
Aaron Ball hovered above the clouds, his Extrasensory Vision operating at full power. This was no ordinary act of "seeing." His electromagnetic perception reached like billions of invisible feelers into the nation below, sealed off by natural defenses of waterfalls and sheer cliffs.
Wano Country's geological structure gradually emerged-it was no ordinary island, but a suspended landmass built over an enormous hollow! Beneath its crust lay a vast network of underground cavities formed by mining, volcanic activity, and ancient engineering. Like a giant tree eaten hollow, it relied on only a few rock pillars and a hard outer layer to support the weight of the entire country.
"So that's it..." Boer murmured. "No wonder Kaido chose this place as his headquarters. Natural defenses that make it easy to defend and hard to attack, rich Seastone veins, an isolated environment... but that's also its greatest weakness."
His vision locked onto several crucial points:
Directly beneath Onigashima lay a massive cavity eight hundred meters in diameter, the remnant of an ancient volcanic lava tube. Only three giant rock pillars, each roughly a hundred meters across, supported the main weight of Onigashima.
Beneath the Flower Capital lay an intricate system of mining tunnels and natural caves. Stress fractures had already appeared in several rock layers.
Deep within Udon's prison mines lay the main Seastone vein, but excessive mining had left the area's geological structure extremely fragile.
The underground rock bridges connecting the regions had eroded in several places.
"A honeycomb structure," Boer concluded. "Destroy enough of the 'cell walls' at crucial points, and a chain reaction will make all of Wano Country... collapse."
A cold curve lifted the corners of his mouth.
Day one, dusk.
At the foot of a secluded cliff on