It is 1931, and we're in Shanghai. The Imperial Japanese Army has been dispatched to mainland China, due to large-scaled and still somewhat recent military events, most notably the First Sino-Japanese War, the Russo-Japanese War, and World War I. In this cosmopolitan city of intrigue lies a small spy organization, which history would later forget, led by a man named Sakurai Shin'ichirou. What Sakurai's group does for a living could best be described as sorting out the mess in situations through which a regular group of spies wouldn't last; the amazing survival abilities of its members are a result of their super powers. However, a big plan starts to unfold in front of Sakurai and his men; that plan involves traitors and spies, politics and domination, tears and blood. No matter how strong a super power is, it also has its limits, and that holds true for Sakurai's men as well; when faced against the enemy behind that plan, an enemy that also has people with super powers among its ranks, how far will their own powers take them?