"Huh? This is the island where you left the group last time, boss!" Sig, feeling quite uneasy.
It seems Roger's stop there wasn't without purpose; it was just bad luck that, for Shanks, it was essentially a "repeated clue."
Then Sig realized, "Wait, Hachinosu? Isn't that...?"
Sig had heard of this name before his transmigration, but he hadn't remembered it. It was only after his transmigration that he became familiar with it, Oldest One when Jinbe explained the origin of the title "Pirate Overlord."
The Rocks Pirates, who once swept through the New World and almost dared to challenge the World Government, are based in Hachinosu!
Then Sig thought of something else: in the original story, after Blackbeard became Four Emperors, he established his base at the "former site" of the Rocks Pirates... Could that be a coincidence?
Could it be that Blackbeard stole the stone tablet from Fish-Man Island?
It's not impossible, really. Although Fish-Man Island later became Big Mom's territory, Blackbeard, after the Marineford War, plundered and took over Whitebeard's former territories, so he might have also set his sights on Fish-Man Island.
It was probably around this time that Blackbeard obtained the Poneglyph and, through some means, learned of its "information," thus establishing his base on Hakunnos Island...
However, for Shanks and Sig, this is probably the least useful of the four coordinates!
"That's right, it's the legendary Great Pirate ... the Rocks who took Captain Roger and the Marines to defeat, the place where he built Pirate Paradise. But when I went there twelve years ago, it was just a 'chaotic yet orderly market island'." Shanks said, a look of reminiscence on his face.
Although the Rocks Pirates were destroyed, only Rocks himself died. Among his top officers and subordinate Captain, the current dominant pirates emerged, including Whitebeard, Big Mom, Kaido, Golden Lion, Silver Axe, and John... all of whom once belonged to the Rocks Pirates.
The New World was divided up by the superpowers, while this former stronghold, due to its symbolic significance, was left untouched—otherwise, it would certainly have been seen as "wanting to become the boss of everyone" and thus besieged.
It is said that seventeen years ago, Captain John discovered the treasure left by Rocks in Hakunnos. After being attacked by several forces, he was forced to retreat to the West Blue and join forces with the Flower Country, only to be ambushed by the navy and subsequently disappeared.
For this reason, "Captain John's Treasure" became very famous among pirates during that period.
The reason why he "disappeared" for ten years and only reappeared seven years ago may be that Captain John wanted to lay low for a while.
Moreover, ten years have passed, and few people believe in the story of Rocks' treasure anymore, and Captain John himself has not approached Hachinosu again.
As for other pirates, they wouldn't dare to occupy Hachinosu, so Hachinosu became a rare island in the New World that was not occupied by any pirates, thus becoming a kind of "pirate market".
In the original work, Blackbeard was able to take over Hachinosu because he was really strong, and also because twelve years later, the pattern of pirate overlords dividing the New World had long since changed.
In the original work, the so-called "overlords" are now only Big Mom and Kaido, and even Rocks' name is rarely mentioned anymore.
Twelve years ago, when Roger went to Laugh Tale, Shanks stayed behind in Hachinosu while taking care of Buggy, who was suffering from a fever and unconsciousness...
Sig initially thought that with the island where Shanks disembarked as a clue, he might only need two or three coordinates to roughly estimate the area—and then even if it was underwater, Sig could use Sea King to search.
Who knows...
"Mr. Rayleigh is right, we really can't be lazy!" Shanks said helplessly.
While in the Sabaody Archipelago, Shanks also visited Rayleigh, and the "membrane" on the Red Force was also applied by Rayleigh.
As Roger's first Captain, Rayleigh naturally knew Laugh Tale's secret, but Shanks didn't ask directly. Although he had a certain purpose, Shanks was also enjoying the process.
Shanks also told Rayleigh that he had found someone whose abilities "seemed very similar to the Captain's," and when Rayleigh teased him, asking if he should just tell him the answer, Shanks replied, "I already have too many advantages; it must be somewhere near Hachinosu Island..."
As a result, Rayleigh specifically "encouraged" him, saying that he would soon see the first Coordinate Poneglyph and told him to keep up the good work.
Shanks had noticed Rayleigh was holding back a laugh back then, and now he finally understood why!
Although the result was somewhat disappointing, there was some good news—both Shanks and Sig himself could finally confirm that his ability could indeed identify the "Coordinate Poneglyph".
The main effect is the combination of the Rumble-Rumble Fruit's power and the "Knowledge Keeper" ability. If one cannot memorize magnetic fields, unless the island's topographical features are very distinct, the vague and unclear images are unlikely to play a crucial role.
However, the magnetic field portion of the "information" was perfectly intact, and Sig was also able to perceive and recognize it...
"Alright, now that we know the first coordinates, then... we still need to inquire about the Crying Pirates who came here a month ago. You probably have other things to do, right? You can move around freely for now." Shanks hadn't forgotten that he still needed to help Ritasha find her father.
The most direct clue right now is that "Yunlai" likely left on the Crying Pirates' ship.
The Crying Pirates left Sky Island six months earlier than the Red-Hair Pirates. Since they were already "Supernovas," their trip to Sky Island was just for training, so they headed straight for the Sabaody Archipelago.
Although Red-Hair and his crew sailed in the Calm Belt, the Crying Pirates likely had some extraordinary encounter as well. They left the Sabaody Archipelago a month before Red-Hair arrived, and also likely arrived at Fish-Man Island a month prior...
Shanks wanted to find out about the Crying Pirates, while Sig was preparing to go to Fish-Man District —he still had a lot to tell Hody Jones!
When Sig arrived at Fish-Man District, he found Jack drinking peacefully with Hody Jones and the others, instead of fighting as he had imagined.
"Yo." Sig appeared before them in a flash of lightning and greeted them.
Hody and the others were taken aback at first, then burst into cheers, unfurling all sorts of banners...
"Brother! What did Neptune say?"
"Is he willing to join his elder brother's side?"
"If you're unwilling... let's start our rebellion tonight!"
"And that redhead, what makes him the Captain of our boss's ship? Let's kill him and make our boss the Captain!"
Listening to these outrageous arguments, Sig's forehead bulged with anger.
"Shut up, all of you!" Sig shouted.
At the same time, one "reassuring" word after another was uttered, and the scene immediately fell silent.
"You bastards... Have you forgotten Fisher Tiger's death? What have you been doing?" Sig preemptively declared.
Upon hearing Sig mention Fisher Tiger, Hody Jones immediately looked anxious. Ignoring Sig's angry expression, he hurriedly said, "Of course not! It's precisely because we remember that Fisher Tiger was killed by shameless humans that we..."
"Fools! Fisher Tiger was killed by the shameless Navy and the World Government. The reason you think it's all humanity's fault... it's all a conspiracy by the World Government!" Sig said with a pained expression.