As her bodyguard, he needed to tail her from a safe distance.
So wherever she went, he must be there around her. As long as it was inside his perception range, Yman could sense any malicious intent directed to Rea.
After he leveled up, his sense and other attributes increased fairly high. And his previous battle in the competition helped him to increase his attributes. Now his perception reached the range of above 150 meters around him. But because this place has partially decreased his magical energy. The longest range his perception could reach was at 110 meters only.
The defeat of Czar did not proliferate on the campus since it happened inside the Little Garden department and only a few people were witnesses of what happened. Also, everyone knew that he was only using a partial amount of his strength. And none of them were going all out in that little fight.