In the year 1517 of the Sea Calendar, Michael vanished under the attack of Uranus, the Sky King.
The N.E.W Marine, Revolutionary Army, Cross Guild, Egghead Island, Whitebeard Kingdom, Whole Cake Island, Elbaf, Germa 66, Wano Country, and other factions officially united.
Thus, the organization known as the "Angel Alliance" was born.
They clashed repeatedly with the World Government…
But each time, they were thwarted by the Five Elders and the God's Knights under Imu's leadership.
During this period, the Celestial Dragons in Mariejois entered an explosive surge in strength.
Some of the bloated, sluggish Celestial Dragons seemed to transform overnight into lean, formidable warriors.
This phenomenon continued until every Celestial Dragon in Mariejois had undergone the change.
After gathering intelligence, the Angel Alliance launched an operation led by Garp as the assault team leader, successfully capturing a Celestial Dragon named Donquixote Shivakarello.
This elderly Celestial Dragon unexpectedly displayed combat prowess on par with an elite vice admiral.
Due to underestimating him, Garp didn't go all out initially and failed to capture him immediately.
After delivering him to Egghead Island, Vegapunk took charge of investigating what had happened to the Celestial Dragon.
Following this, the Angel Alliance and the World Government reached a delicate balance in military power.
Surprisingly, the world entered a rare period of "peace."
...
Year 1518 of the Sea Calendar.
The construction of the Sea Train entered a feverish phase.
After completing the Sea Train routes connecting Ship Country to Enies Lobby, Marineford, Alabasta, and other locations—along with a year-long trial operation—the Angel Alliance commissioned and funded an official plan to extend the Sea Train network across Paradise and the Four Seas.
The project aimed to fully connect Paradise and the Four Seas within a decade, effectively breaking the limitations imposed by the Calm Belt.
That same year, Iceberg, the first president of Ship Country, officially appointed Franky as Minister of Armaments.
His responsibility was to design and develop a series of combat vessels to safeguard the Sea Train, primarily targeting the Sea Kings of the Calm Belt.
The Germa Kingdom, the Alabasta Kingdom, and the Drum Kingdom, as the three manufacturing giants of the Angel Alliance, would provide absolute support to the Ship Nation.
...
Red-Haired Shanks continued his adventures on the high seas.
Though he did not join the Angel Alliance, he had no intention of becoming its enemy either.
Soon, within the vast but fragmented pirate world, Shanks earned the title of the new "Emperor of the Sea" through his overwhelming strength.
However, informed sources revealed that the Emperor of the Sea, Shanks, would often visit the now-vanished Baltigo, drinking freely upon the waves before departing.
Since this location had long been under the watchful eyes of both the World Government and the Angel Alliance, representatives from both sides would frequently approach Shanks, attempting to recruit him into their ranks.
Yet Shanks consistently refused them all.
Still, his attitude toward the Angel Alliance's envoys was noticeably better than his dealings with the World Government.
Meanwhile, the pirate factions seemed to realize that despite being called the "Emperor of the Sea," Shanks had no interest in allying with other pirates.
Thus, they turned their attention to another rising star—Marshall D. Teach, the self-proclaimed "Admiral of the Pirates," also known as "Blackbeard."
With his considerable abilities, Blackbeard gathered and consolidated a massive pirate force, quickly becoming the most powerful pirate group in both Paradise and the New World.
...
After enduring a series of upheavals, Elbaf came to a profound realization: peace did not mean erasing "battle" from their very genes.
Thus, the Walrus School resumed the training and education of Elbaf's warriors.
The two pillars of the Giant Warrior Pirates, "Blue-Haired" Dorry and "Red-Haired" Brogy, became guest instructors to nurture the next generation.
Meanwhile, Loki, imprisoned at the roots of the Adam Wood, still wore a sinister smirk, showing no signs of struggle.
...
By the end of the year, the Angel Alliance internally decided to adopt the Marine's ranking and duty system.
At the same time, Sengoku officially stepped down as Fleet Admiral, transitioning into the role of "Grand Inspector of the Marine," a position once held by Michael.
Akainu Sakazuki ascended to the position of Fleet Admiral.
Though Aokiji Kuzan had voiced clear dissatisfaction, faced with the unanimous voting results of the Angel Alliance's higher-ups, he ultimately had no choice but to accept the outcome.
However, he soon found an excuse to resign as a Marine Admiral, instead becoming the chief instructor and supervisor of the Youth Training Program.
Simultaneously, Kizaru Borsalino also resigned as an Admiral, taking up a permanent security post on Egghead Island.
While protecting Vegapunk, he began assisting in further research on the Seraphim.
Just as Akainu Sakazuki rose to Fleet Admiral and Aokiji and Kizaru resigned, the Angel Alliance conducted a new round of Admiral selections.
In the end, "Empress" Boa Hancock, "Thunder God" Enel, and "Hawkeye" Dracule Mihawk became the new Three Admirals.
Meanwhile, Nico Robin, Governor of Sabaody Archipelago, also took on the role of Vice Chief of Staff for the Marine, gradually assuming the responsibilities previously held by Vice Admiral Tsuru.
...
The year 1519 of the Sea Calendar.
The Youth Training Program officially concluded.
Under Kuzan's supervision, all members of the program embarked on their own personal journeys of growth.
They were dispatched to the East, West, South, and North Blue respectively for a two-year regional inspection mission.
During this period, due to the ongoing standoff between the Angel Alliance and the World Government in the New World, many pirates withdrew from the New World under the high-pressure environment and fled to Paradise and the four seas.
As a result, public security plummeted to its lowest point since the founding of the Angel Alliance, with a continuing downward trend.
Thus, the Angel Alliance decided to use this situation as an opportunity for the younger generation's training and growth, tasking them with collaborating with local Angel Alliance members to conduct specialized crackdowns on pirates.
...
That same year, Alabasta entered a period of abundant rainfall.
New oases emerged across the country, significantly increasing land utilization, and the benefits of its large population began to manifest.
Through the efforts of King Cobra, Prime Minister Clover, and other officials, Alabasta firmly established itself as the strongest nation in the Grand Line.
The reputation of the Nefertari family in Alabasta once again reached its peak.
The last time this happened was when the Constitutional Monarchy system was officially introduced.
Nefertari D. Vivi also served as the nation's goodwill ambassador, frequently traveling between the four seas and Paradise.
On the last day of that year, Crocodile returned to Alabasta.
And reconciled with Cobra.