After silently listening to the talk between Alysia and Eris. Austin learned from Alysia that he had been ensnared by an illusion of Katarina from the very moment he first locked eyes with her.
According to Alysia, Katarina had never actually stripped herself naked; what Austin had witnessed was merely a deceptive trick of the mind, an illusion!
His first reaction upon hearing the information was to blurt out, "How is that even possible?!"
However, his words got stuck in his throat as he remembered the various abilities he had seen, including his own
Considering powers like soul-eating, fire creation, and tornado summoning exist, the idea of lifelike illusions didn't seem so far-fetched. If those kinds of extraordinary abilities could exist, then making convincing illusions didn't seem too unreasonable.