A furious roar burst from Kaido's mouth. He was a Zoan Devil Fruit user, possessing absolute strength and an immensely powerful body. Any known method found it difficult to kill him.
Kaido was actually the same.
The sea was a nightmare for all ability users, because seawater rendered any Devil Fruit powerless.
But being rendered powerless did not mean disappearing. Unlike Seastone, which completely sealed abilities, even soaking in seawater would not strip one of their powers away.
In other words, Kaido's "immortality" was still effective. If that happened, his fate would be exceedingly miserable. He would sink helplessly to the seafloor, yet would not die, nor could he use his abilities to swim away.
Perhaps his fate for the next hundred years would be to serve as a conscious statue at the bottom of the sea.
That was a thousand times more terrifying than simply killing him.
As for why no one had thought of throwing him into the sea all these years, firstly, whenever he was captured, it had been because he had gone looking for trouble himself. Given the slightest chance, he would escape.
Secondly, they had never had the chance to do so.
Of course, if Shin had been the one to explain it, he would certainly have blamed something like the author being an idiot.
Still, Shin understood. Every fantasy work differed enormously from reality. Even the most rigorous work would have quite a few bugs, and the longer a work was serialized, the more this was the case.
Compared to that, One Piece was fairly good. At the very least, it was not like Hokage, which seemed fine on the surface but turned into a chaotic mess of inconsistent logic and impossible-to-sort timelines upon closer scrutiny.
That was because authors were human. Once enough