The Superhuman killer noticed that Madam Luna was always watching Mark Vanitas. Whether he was going for a run or going to the park with his family, her eyes were always on him.
If the superhuman killer dares to attack Mark at any of these moments, then Madam Luna will definitely find out where that attack came from, and that would be the end of the road for him. The superhuman killer might be the best at killing people undetected, but he had no delusion that he could escape from someone like Luna if she knew his general direction.
She would probably quarantine the entire area in less than a second using her blessing and then hunt him down like a beast. He did not want to go through something like that. It would be more trouble than they were paying him for.
