From 1510 to 1518 in the Sea Circle Calendar, these eight years were the most low-key period for Hachinosu.
Roy kept all core members confined to the main island of Hachinosu, fearing a surprise attack from the World Government and the Navy.
It's not that Roy wants to keep a low profile, it's that he simply doesn't have the time to make a fu
The replica of the Pluton Battleship proved to be far more difficult than he had imagined.
Tom and his research team plunged headlong into Pluton's core power system, spending a whole year just disassembling the blueprints.
The complexity of that thing completely exceeded the comprehension of current shipbuilding technology; its gear meshing structure, energy transmission lines, and weapon activation devices...
Each of these items represents the culmination of technology from eight hundred years ago; they would be considered ancient texts by today's standards.
"Captain, we've figured out how this thing works."
When Tom emerged from the lab with dark circles under his eyes, it was already the third year.
"But understanding the principle and replicating it are two different things."
"We can't manufacture the materials needed for the power core right now, so we have to develop alternatives from scratch."
Roy immediately asked, "How long?"
Five years.
Tom held up five fingers.
"At least five years."
This is even assuming that there are blueprints and physical objects on Hachinosu.
"If you only have blueprints but no physical prototype, I might not be able to finish it even in twenty years."
Roy made the decision. "Five years it is, get it done."
As a result, this wait lasted for eight years.
It wasn't until 1518 of the Sea Circle Calendar that the first replica of the Pluton Battleship slowly sailed out of the shipyard on Hachinosu.
The ship's hull is entirely black, almost identical to the original from eight hundred years ago, except the materials have been changed to substitutes that Hachinosu can produce itself.
The performance has been slightly compromised, but the power of the core weapon system has been retained by more than 70% of the original.
Kaido received the news and flew over from Wano Country that very day.
This brute circled the warship three times, his eyes, as big as copper bells, brimming with excitement, repeating only one phrase over and over:
"This is mine! It's mine!"
"It's yours, but I have to deliver it to you."
Roy stood on the dock, looking at Kaido's impatient expression and couldn't help but laugh.
"What's the meaning?"
"It means that Wano Country is too far from Hachinosu, and you can't sail this ship back by yourself."
If you're spotted by the navy or other forces on the way, even if you, a power user, fall into the sea, you'll need someone else to rescue you.
Roy named several people, all of whom were top-ranked fighters from Hachinosu, and asked them to lead a fleet to escort Kaido and the replica of Pluton back to Wano Country.
This ship took eight years to build. If it were intercepted halfway through, Roy would curse Kaido death, and Kaido would be furious with himself.
The escort mission went smoothly, and the replica of Pluton safely arrived at Onigashima in Wano Country.
Kaido threw a three-day, three-night banquet that very day. On the third day, he even called Roy's Den Den Mushi a type of Den Den Mushi) and shouted so loudly that the Den Den Mushi's eyes trembled.
"Hehehehe! Roy!"
"I have Pluton now! If the Navy dares to come again, I'll blast Marineford!"
Roy didn't take it seriously; Kaido always said that when he was drunk.
Although the path to replicating Pluton was difficult, Charlotte Linlin's research on the ' Iron Balloon ' physique went unexpectedly smoothly.
With the addition of a high-purity sedative to the Seastone chain, even the former emperor of the sea would find it difficult to move a single finger.
Dr. Gracia took the opportunity to study her thoroughly from head to toe.
" The Iron Balloon is essentially the result of an extremely rare congenital genetic mutation,"
Gracia explained to everyone at a core meeting,
"It pushed the density of skin, muscles, and bones to the theoretical limit."
When a conventional attack hits Iron Balloon, the energy is dispersed throughout its body, making it appear as if it cannot be cut.
"Is it possible to transplant it?" Roy asked the crucial question.
"Yes, but we'll have to wait until the experiment is complete."
Gracia adjusted his glasses.
"The genetic sequence of the Iron Balloon is very complex, and transplanting it rashly may lead to rejection."
I need three years to complete the human trials.
Roy gave him five years. Five years later, the Hachinosu Bloodline Transplantation bank added the Iron Balloon as an option.
Bullet was the first to receive the transplant.
The day after the transplant, he went to the training ground and asked Hawk Eyes to cut him down.
Hawk Eyes slashed Bullet's chest with his Black Blade Yoru, leaving only a white mark.
Ten years ago, Hawk Eyes's slash would have required Bullet to defend himself properly, but now, standing still and taking a slash only resulted in a minor cut.
"This hardness,"
Bullet looked down at the faint white mark on his chest and grinned.
"Even stronger than the Lunarians."
Hawk Eyes sheathed his sword and nodded, a rare occurrence for him. "Indeed."
From then on, each core member of Hachinosu carried a Iron Balloon.
The defenses of the Lunarians were indeed a level below those of the Iron Balloon.
As for Big Mom herself, after completing the research on the Iron Balloon, Gracia used the poison formula that Vera had improved over the years.
The Devil Fruit power was successfully separated from Linlin's body, a process that lasted a full month.
The moment the fruit was separated from her body, Linlin fell completely silent.
Charlotte Linlin, the sea tyrant who reigned supreme over the ocean for decades, met her end in the underground laboratory on Hachinosu.
Roy had her buried at sea. After all, she was a ruler, and giving her a dignified end wasn't excessive.
The Soul-Soul Fruit is sealed in the deepest part of the treasure vault on Hachinosu. It is Roy's second candidate for the fruit, to be acquired when the time is right.
The situation in the world of Totto Land is quite interesting.
When news of Big Mom's capture by Hachinosu spread, the entire New World assumed that Totto Land would collapse quickly.
As a result, Katakuri stepped forward, leading his brothers and sisters to continuously shrink the defensive line, abandoning most of the outer territory, and making the core sea area as solid as an iron barrel.
He himself fought more than a dozen tough battles, eliminating several New World pirates who wanted to take advantage of the chaos, and managed to preserve the name of the Big Mom Pirates.
The territory has shrunk considerably, but the backbone has hardened considerably.
When people in the New World talk about Totto Land Cake Island, they no longer say "that pirate crew that's only held together by Big Mom," but rather " Katakuri and his gang are not to be trifled with."
Of course, the power vacuum left by the contraction of the Totto Land had to be filled. Shanks was the one who filled it the fastest.
Taking advantage of the situation, the Red Hair Pirates annexed most of the Totto Land territory of Whole Cake Island, greatly increasing their strength.
Beckman led his team to take over three islands belonging to Totto Land Island, Lucky Roux single-handedly wiped out two pirate crews, Yasopp shot through the shoulder of an enemy captain from 300 nautical miles away.
Within three months, the Red Hair Pirates ' flags were planted all over the former territory of Totto Land.
News Coo in the New World began referring to Shanks as the "Fifth Emperor of the Sea."
Although Shanks himself wasn't too keen on the title, the facts speak for themselves—he certainly deserved to be ranked alongside the others.
Thus, the power structure of the five Great Sea Emperors changed: Whitebeard Edward Newgate, Kaido of the Beasts, Red-Haired Shanks, Heavenly Dao Roy, and Shiki the Golden Lion, whose power had greatly diminished.