There were many monsters inside the fog around Hikaru's territory. Darnag and Damian had seen Tsuraguki slash a monster over a hundred meters with ease when it tried to attack the territory.
That power scared them, but they were also overjoyed. If the territory had someone as strong as Tsuraguki, then they wouldn't have to worry about being attacked by monsters.
However, Darnag and Damian also knew that each powerful being had their own arrogance, and they would never become servants to anyone if they didn't like the person.
Hikaru's current territory was so small that he didn't even have a personal servant. However, Tsuraguki was very strong, and Darnag and Damian thought that someone as strong and beautiful as her would be warmly welcomed everywhere including in high class kingdoms.
Because of that, they were worried that the low pay would make Tsuraguki leave this place.