"Will you just continue standing there now? Don't you have any questions for me?"
"By the way, I am Fenix… a humble servant of the Dragon King, don't bother asking about my clan name or something like that; I don't have a clan or family…"
Sitting on the skull of a dragon, Fenix's tattered cape waved in the air and made him look more mysterious.
Rio tilted his head a bit and asked,
"The purpose of bringing me here is?"
The illusion spell of Ayla didn't work on Rio as it was considered harmful because it could have teleported him to a place filled with harmful illusions, thus his true immunity got triggered automatically.
As for the 'sleep' spell that was likely cast on all participants by Aria, it actually worked on Rio because it wasn't considered harmful by true immunity.
Moreover, at that moment, Rio himself wanted to sleep as it was night, so it worked because of his permission.