It was not a lie that they should be focused and remain on guard. It was the reality.
This incident began one month ago; it was at the time when an adventurer, who just had become a rank B, approached the Wraith Plains to test his strength. That adventurer was heading toward the Wraith Plains through the forest, and when he tried to enter the haze which showed the boundary line of the Wraith Plains, a Skull Face appeared and broke through the haze a few mels from where the adventurer was.