Mas looked at Harold with a half-smile on his throne and found it funny.
Even now, was he still pretending to be a good person for his own consideration?
He would never believe that Harold could not sense that an assassin had infiltrated the capital. As for why he did not send people to reinforce him and Belek, he probably wanted to see how much Mas valued his identity as his "beloved disciple".
It seemed that his actions are as Harold had guessed, where he sent no less than a Legendary alchemical creature to protect him after knowing how important the so-called disciple was in Master Mas' heart.
Now, he was pretending to be righteous to share his worries. If he wanted to rope him in, he could only say that it was indeed a mind trick?!
He reckoned that this sly old fox was still thinking about how to provoke a fight between Mas and the Alchemist Guild, and then he, Harold, would reap the benefits.