The Phantom Orchestra

Just before the end of the WWIII, much of the information that kept the world was lost. The civilization was sent back decades in time in many ways, a scenario very similar to the beginning of the XXI century. Rabden, where these events occurred, became a haven for crime, a corrupt police department and an idle government that allowed it to become one of the most dangerous cities.
Amid this chaos, a group of civilians fight clandestinely the biggest mafias, and fight to keep the little order that remains in the city. They are known as the Phantom Orchestra.