BOOM!
The seawater boiled as endless mist surged outward with the tsunami. Accompanied by beast-like roars, the entire sea had fallen into an apocalyptic scene.
"Is this monster impossible to kill?!" Dracule Mihawk twisted through the air and unleashed several consecutive sword slashes, asking in growing frustration.
Fujitora was in much the same situation. He had nearly gone all out, combining his swordsmanship with the Press-Press Fruit, yet he still could not inflict any real damage on the "Beast King."
It was not that the two of them were weak. On the contrary, their combined strength was rare even across the entire Grand Line.
Even two Marine Admirals working together might not have been able to defeat them.
The fundamental reason they had fallen into a bitter struggle was that they could not break through its defense.
Whether it was Dracule Mihawk's razor-sharp sword energy or Fujitora's Press-Press Fruit, neither could truly harm this ancient weapon.
This was practically a mandatory skill for any boss making its way in the world these days. Without something like an immortal body, they would be too embarrassed to even greet other bosses.
Of course, an ancient weapon like the "Beast King" could not really be counted among those bosses, but the fact that it possessed extraordinarily thick steel armor was indisputable.
In fact, when the "Beast King" had been created eight hundred years ago, it had employed the most cutting-edge biological weapon technology of that era. The steel covering its entire body had been forged from a remarkably rare substance mined from the seafloor: Ink Crystal Stone.
This type of crystal was usually found tens of thousands of meters beneath the sea, and the conditions required for its formation were exceptionally harsh. It had been rare even in those days, and was even