Arcadia is located on the outskirts of Shinagawa. In contrast to Souhonzan, Arcadia is comprised mostly of clinically designed buildings, in addition to its towering cathedral, and the temple located at the rear of the city. Divine family demons like Principality and Power are represented in statues throughout the city.
|Characters||Protagonist - Azura - DB Mikanagi - DB Kano - DB Kuroe - DB Yamaguchi - Kuzaka The Wise - Lord Judah - Madam Justice - Lord Doukan - Ogami - Setsu - Snakeman - Yamamoto the Steel-Willed - Louis Cyphre|
|Locations||Arcadia - Cathedral of Shadows - Ichigaya - Ikebukuro - Nakano - Protopia - Second Home - Shibuya - Shinagawa - Shinjuku - Shinjuku Babel - Souhonzan - Suginami - Third Home - Ueno|
|Dungeons||Suginami Tunnels - Basilica|
|Music||"Amatsuchi" - "Haru Megido"|
|Terminology||Cult of Gaia - Demon Buster - Great Cataclysm - Innocent - Millennium Kingdom - Obelisk - Order of Messiah - Seven Philosophers - Yagi - Chain of Curse|
|Archives||Demons - Skills (Features)|