After parting ways with Olvia and her daughter Robin, Carlos naturally did not head straight back to the New World. That had only been talk. His main purpose for coming out this time—the Ancient Weapon Pluton—was still not in his hands.
Carlos headed directly for where the Ancient Weapon Pluton lay dormant: beneath an island in the Calm Belt near the South Blue of the Grand Line.
According to the translated ancient text, the Ancient Weapon had been concealed through special means at the bottom of a hollowed-out island. Retrieving it would take no small effort.
Carlos traveled continuously with Kamui, while also identifying his position and constantly adjusting his route. It took him more than an hour to reach his destination.
That was only because Kamui was so absurdly overpowered. Otherwise, reaching the depths of the Calm Belt would not have been easy. Not just anyone or any force could manage it.
This was a vast island, with towering mountains, ancient trees reaching into the sky, and vines coiling around them like pythons. It was lush and verdant, filled with eagle cries and ape calls mingled with the roars of unknown beasts, carrying an air of ancient savagery.
A great river ran through the island and emptied into the sea. Following it upstream from its mouth led to an enormous oval lake at the island's center. The water was dark and deep, yet it shimmered beneath the sunlight. Lush aquatic plants lined the shores, brimming with life, but countless dangers lurked there as well. Giant creatures would erupt into brutal battles before, during, or after drinking. This was the naked law of the jungle, rarely visited by humans: survival of the fittest!
According to the ancient records, the Ancient Weapon Pluton was hidden at the bottom of this immense,