Gregory has felt the guardian's power. He felt that it's not yet strong and traced it to that environment but he was late as Clara was gone before he arrived.
Sonya looked him in the eye immediately she felt his hand on her neck and gasped, but couldn't utter any statement nor blink. She just kept looking at him like she was being hypnotized.
Suddenly, Gregory gave an evil smile and releases Sonya without doing anything to her.
"I can't believe my luck with all these foolish guardians, hahahahah." he couldn't contain his happiness and laughed out loud.
Sonya regained herself and kept looking at him.
'Maybe I shouldn't have killed this curious one, he might have come here for the same reason.' he thought.
'If the guardian is so concerned about this human to the point of wiping her memory, then she just delivered a trump card right into my hand. This cutie must be so important to her.'