With the addition of skills and knowledge that he just bought and absorbed, Roland, as well as the guards immediately felt that someone was following them from behind.
The white Veloz, which One was riding, immediately slowed down, to intercept the latter.
With One being there, Roland was not worried of anything going wrong. There was also the magical Secret Communication Technique that allowed him and the others to communicate just using their minds even if they were far from one another. It was indeed a perfect skill for reconnaissance and the like.
At the same time, Roland also heaved a sigh of relief. It was fortunate that he decided to buy some set of skills to improve the battle guards, else, he would surely not have noticed that someone was actually following behind them all this time.
Roland made a bold guess and thought that it should be that 'extraordinary' person, that had witnessed the fight yesterday, and the one that was face-slapped by him unknowingly earlier.