When Aster reacted, he checked how much time passed and luckily the flow of time was different on the inner space of the book so only a couple of minutes have passed which also meant that probably Lilia only felt the talisman breaking when he returned to the inn, without wasting time he immediately took out the communication talisman and contacted his mother.
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A few seconds ago.
Lilia was leisurely laying in her bed feeling a bit depressed, her precious son wasn't around and her day only consisted on meditating, eating and sleeping so she was bored, while she was wondering how to convince her son of letting her accompany him on his training her heart feel unease and she immediately stood up from the bed.