"Fight For The King" 

Even if Atherton didn't use his ability anymore, those who had been conquered by him, from places to people, would always belong to him. 

As long as Atherton still had a breath left, these places and people would not go anywhere. 

If Atherton conquered a place, it means he could control everything in that place as easily as managing his domain. 

The people he didn't want to be inside his territory would never be able to set foot into his territory. 

To be honest, the king had conquered his own people's kingdom, but what he beat was not the territory but the overall kingdom itself. 

This means, wherever the blood clan went, as long as they were still considered a kingdom, even if they only lived on a small island or a cave... 

They would always be under Atherton's control and protection. 

This is Atherton's last line of defense created for his people aside from Crimson Island, hiding underground, and so many other defense lines.