At the same time, Muria commanded the five major secret agencies loyal to the Royal Family and the clandestine organizations formed by various "conscientious" evil creatures subjugated by Mels, to assist and clean up from the shadows.
Besides this, Muria also opened the kingdom's top priority intelligence channel, which allowed every noble official who had discovered the traces of a demon yet was powerless to stop them, to rapidly report back, allowing him to immediately dispatch giants through the teleportation array in the royal palace to quickly support and suppress all over the country.
In short, Muria could only use every means in his power to passively cope with these recurring demons because he could not find the root of the problem.
Of course, this situation wasn't only happening within the Lockman Kingdom - as far as he knew, the Dragonman Red Wing Duchy surrounding the kingdom and the Dwarven Sherman Duchy had similar incidents of frequent demon appearances.