Demonic creatures from a parallel dimension have come to our world. This phenomenon has been going on for decades. So, a special group in charge of dealing with these creatures has been created. They are called
The Black Guards. Recently, the governments of our world and the representatives of the parallel dimension have come to a peace agreement that needs to be ratified. Renzaburo Taki, one of the be
st Black Guards, is responsible for making sure that the negotiations run smoothly. Unfortunately, Not everyone wants the peace between the two worlds to last any longer.
