After knowing everything that one needs to know about the beast and Ashiel, how he tamed the beast which is still confusing everyone after his explanation - they already went towards the Imperial household following their traces back to the secret passage
They couldn't even risk themselves being seen by the enemies knowing that there will always be eyes looking at them, especially the crown prince
He's an important member of the imperial household, the future emperor and ruler of the empire, that's why he's always subject to everything he does
Not to mention, he was able to escape those shadows and figures' eyes thanks to Ashiel and the way he led the path
"So Xyle, let's talk. How did you come to know what would happen to my fiancee?"
Charles was talking to his best friend that he had long considered. He was the one who closed himself to him knowing that he had a great mind like his father, as well as the household that he was born to