On the fifth day after the conquest of the Shinobi World's continent, a new power called Chaldea was established, replacing Konoha as the strongest force in the Shinobi World.
At first, Ye Uchiha was nominally the ruler of the Shinobi World, but the Daimyo of the Five Great Nations, along with the Ronin Ninja and Samurai who had not participated in the war, refused to recognize him. Together, they launched a punitive campaign against him.
Of course, the campaign ended in a crushing defeat for the Daimyo's side. After Aizen paid the Daimyo of the Five Great Nations a friendly visit, they issued a proclamation the next day, submitting their nations to Ye Uchiha. The grand punitive campaign came to a theatrical end.
Even the ambitious schemers who refused to accept this could only seethe in silence, hiding in the shadows as they waited for an opportunity to overthrow Chaldea.
Chaldea's headquarters, the Floating City-the Hanging Gardens of Babylon.
This was the Noble Phantasm of Ye Uchiha's newly summoned Servant, the Assyrian empress Semiramis. It floated above the Five Great Nations as Chaldea's main base.
Equipped with twelve Od cannons as powerful as EX-rank Noble Phantasms and eleven layers of Meteor-Class Interception Spells with destructive power comparable to Anti-Army Noble Phantasms, this strategic fortress, renowned as a city in the sky and a cosmic aircraft carrier, deterred ill-intentioned schemers from making any rash moves.
Under its original specifications, constructing the Hanging Gardens of Babylon required gathering set quantities of wood, stone, minerals, and plants from the place where Semiramis had lived. These materials then had to be assembled, and Semiramis had to perform a lengthy ritual to turn fantasy into reality and complete the Noble Phantasm.
In the original story, Amakusa Shirou Tokisada had spent a full sixty years scavenging