Aside from using the symbol to access Scar's manor and enter the Hero's Sanctuary, Kieran didn't use it for much else. In fact, this was the first time he had ever experienced a summons.
Considering the strength of the pulsations, Kieran figured that Scar was currently within the Hero's Sanctuary and sensed his arrival.
And because he had been here for quite some time without visiting Scar, it was likely that he had grown impatient and simply signaled for Kieran to come.
Of course, there was also the possibility that Scar had some pressing matters to speak about. That much was unknown, though it could be easily learned by visiting Scar.
Naturally, Agatha and Isadora sensed the signal coming from Kieran's symbol and looked at him.
"Is your grumpy old man calling upon you? What a pity, I thought I'd be able to enjoy your handsomeness for a while longer~," Agatha remarked playfully, casually adding a dramatic sigh.