"… I can't sense anything inside Mana Dominion… so, whatever is observing me is a good hunter… a survivor of this planet."
Leon couldn't help but sigh… it looked like Gurr didn't learn his lesson and sent someone to keep an eye on Leon. Maybe he wanted to learn more about Leon could do and create a plan to kill him… that was a bit too extreme considering that Leon certainly wasn't the source of his misfortune. Still, Leon was aware that sentient living beings tend to avoid being reasonable at the necessary moments.
Anyway, Leon could only wait until Gurr and his warriors do whatever they want. Although he could try to attack whoever was watching him, Leon was pretty sure he wouldn't succeed. He wasn't fast enough, not even when flying. So, Leon just continued to do his own thing.