

About
Taking place in the year 1937 on the eve of World War II, the story involves a mysterious spy training organization known as the "D Agency." The organization is established by Lieutenant Colonel Yuuki from the Imperial Japanese Army. His ideals lead him to recruit people beyond military academy graduates and personnel, while training them to become skilled agents in arts of manipulation. These agents would become a specialized team to conduct operations. One such antihero agent, under the name Jirou Gamou, goes on a harrowing mission to uncover secret documents titled "Black Notes," while battling forces from within and without his own ranks.
Seasons
Episodes
Season 1

Joker Game (1)
Autumn, 1937. Against the Imperial Army's objections, Lt. Colonel Yuuki establishes the spy training group "D-Agency." The army sends Lieutenant Sakuma to serve as their liason to D-Agency, and he watches the applicants easily coast through the brutal examination process. Not long after, Sakuma is ordered by Colonel Mutou to search the home of a suspected American spy, the Japanophile John Gordon. Disguised as military police, Sakuma leads D-Agency on their first mission.

Joker Game (2)
The raid of Gordon's home comes up empty. And when Gordon lets it slip that this is the second time his home's been searched, Sakuma realizes the mission is a set-up by Mutou.

Miscalculation
A man wakes up with complete amnesia. His only posession? A passport with the name "Ryosuke Shimano" and the port of entry, Marseille. Speaking with to Alan, the mysterious man next to him, he learns France has been occupied by the German army.

City of Temptation
Sergeant Eiji Honma has been assigned to the Shanghai military police. Not long after assuming his new post, he is summoned by Captain Masayuki Oikawa. Oikawa orders Honma to conduct an internal investigation and uncover an enemy agent who's infiltrated their ranks. As he explains the mission, they hear an explosion...

Robinson
Kazuo Izawa has a good life running a simple photography store in London... until he's suddenly arrested under suspicion of espionage. As Isawa undergoes a harsh interrogation, Lieutenant colonel Howard Marks, master spy for the British Secret Intelligence Service, appears before him.

Asia Express
D-Agency receives an urgent meeting request from one of their collaborators, Morozoff, who has important secret information to report. D-Agency member Reiji Seto arranges to meet him on the South Manchurian Railway Asia Super Express. As Seto moves to collect the information, he finds Morozoff has been murdered.

Codename: Cerberus
The luxury liner Tokimaru makes its way from San Francisco to Japan, stopping at each Hawaiian island along the way. As Osamu Utsumi sits on the deck enjoying a crossword puzzle, he's approached by a man calling himself Jeffrey Morgan. At that same moment, cries of terror erupt from those looking out at the ocean.

Double Joker (1)
Former diplomat Kiichiro Shirahata is suspected to have illegally gained knowledge of the Imperial Army's top-secret "Grand Strategy." Investigating in secret, Jirou Gamou makes contact with Shirahata's old friend, the British consul Ernest Graham.
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