Coincidence
All eyes turn to Lis as she claims that Aria's powerful spell wouldn't work on her, leaving the group with an increasingly negative impression of the cunning lady.
"Oh?" Aria tilts her head, her expression a mix of curiosity and mild disappointment. "My little trick isn't good enough? Or perhaps you're not as willing to cooperate as you claim…"
"That's not it," Lis replies with a friendly smile, stepping closer to Aria and pointing to her own forehead. "You can check for yourself. There's nothing I can do about it."
"What do you—" Aria doesn't need to physically touch Lis to analyze her with magic. Her eyes flash briefly as she inspects Lis's body, and what she discovers leaves her visibly surprised. "Wait… this…"
Aria's shocked expression piques Arthur's curiosity and concern, but Lis's smile only widens.