Joker Game

A spy mystery taking place at the beginning of the Showa era.

With World War II right around the corner, intelligence on other countries' social and economic situation has become a valuable asset. As a result, Japan has established a new spy organization known as the "D Agency" to obtain this weapon. Under the command of Lieutenant Colonel Yuuki, eight agents have been assigned to infiltrate and observe some of the most powerful countries, reporting on any developments associated with the war. In order to carry out these dangerous tasks, these men have trained their bodies to survive in extreme conditions and studied numerous fields such as communications and languages. However, their greatest strength lies in their ability to manipulate people in order to obtain the information necessary to give their nation the upper hand.

In the year 1937 on the eve of World War II, Lieutenant Colonel Yuuki of the Imperial Japanese Army forms the D Agency, an army intelligence outfit under his command and tutelage. Army General Staff attaches Lieutenant Sakuma to observe the unit's performance. D Agency casts a wide net to find agents beyond Japanese military personnel, and Yuuki establishes D Agency's tenets, which go against IJA doctrine: "Don't kill, don't get killed, don't get captured". With this, Yuuki trains a team of operatives who conduct missions against domestic and foreign powers.