Kaido simply had extraordinary natural gifts. Like Big Mom of the Four Emperors, he had shown talent far beyond ordinary people from childhood, eaten a fruit that suited him perfectly, and brought his Armament Haki to a world-class level.
Karn's Tailed Beast Bomb had used almost half the chakra in his body. It was powerful enough to destroy a medium-sized island in the One Piece World, even surpassing the legendary Pluton.
With the speed of the Rumble-Rumble Fruit and the destructive power of a Tailed Beast Bomb, Karn could deliver one right to an enemy's face.
"It'll probably take a day or two to recover. A human body is still somewhat different from a Tailed Beast, a creature made of concentrated chakra, unless I stay naturalized the whole time..."
As Karn flew slowly, he checked the depletion within his body.
Naturalization could indeed absorb natural energy quickly to help him recover, but it consumed stamina, making the trade-off hardly worthwhile.
After he left, the war at Marineford continued. Apart from the appearance of Blackbeard and his men, he had no intention of intervening in anything else.
His goal of establishing his might was halfway achieved. Next, he would see whether Imu would attack him over the destruction of the Holy Land Mary Geoise. If it was an attack from Uranus, it should pose little threat to him. Others saw Karn as a Rumble-Rumble Fruit user, but he had already overcome the weaknesses of Devil Fruit abilities.
"With just one and a half Tailed Beasts, the energy in my body is still too little. Swallowing a few more would make things much better. As for the Demonic Statue of the Outer Path, I'll keep it for research."
After some thought, Karn felt that he did not need the Demonic Statue of