Aolis knew very well that his sudden visit had made his son angrier and obviously uncomfortable. As the Emperor witnessed, again and again, time did nothing to lessen the past anger his son harbored within him.
Aolis didn't feel offended by his son's attitude because he acknowledged it was his fault.
During this time, he just hoped that his son's attitude would change and their relationship could return to harmony again. But after all these years, his son still hated him. Even at the age of seventeen, he decided to leave the palace.
At that time, he did not agree with his decision. How could he let his only son, the Crown Prince, move out from the palace? But again, his own father Leovaris meddled. He can't do anything and just allows him to move out.