Amaterasu City

Amaterasu City is the main city of Amaterasu Server, the opposite of the Asuka City from the thrid game of Digimon World. Actually, the most important city of Amaterasu's server.

Location
Just like Asuka City, Amaterasu City is north of Central Park, accessible only by a narrow bridge. It's located in the Central Sector.

Protection
The Amaterasu City is under protection of Knightmons guarding the bridge (and later standing by the gates). The only way to enter the city is by defeating the 4 A.o.A Chiefs holding the 4 ID Passes, who are located in the 4 cities of the server: Qing Long, Zhu Que, Bai Hu and Xuan Wu. Later on, when the city has been liberated by the resistance, multiple D0 guards will be patrolling the streets and the Admin Center.

Amaterasu Server
Amaterasu Server is exactly the same as the Asuka Server, but is darker as if it's night time. The enemies are also both different and stronger compared to those found in Asuka Server. Before the MAGAMI President, or Chief Officer, is defeated, numerous A.o.A troops are found patrolling the areas. After that they disappear, assumed arrested. They will Card Battle you unless your Charisma is high enough or you have the Asuka Trophy, in which case they will Digimon Battle you. You can fight them again a second time if you get the Sun Trophy.