Starting several hundred years ago, the Demon Military Advisor Black Robe began to plant spies in the human world to the south. Although this plan did not seem to proceed too smoothly on the surface, no one truly knew just how many people had secretly shown loyalty to the Demon race. The story of the Garden of Zhou had long since shattered this confidence.
Black Robe had always been the target of the young Demon Lord's respect and study. To Black Robe, any human could be the target of his bribery, so long as they were favorable to the great undertaking of the Demon race. Even if it was a foe who had slain his father, the grudge could be dissipated with a smile. If it was a very important target, he might even be willing to pay a greater price.