The first day of training was explanations of what the Authority was, I was able to understand that easily, but it seems the girls had problems with it, at the end, I asked the others about their training.
From what everyone said, my sisters and Silvia also explained about Authority, and each one used different ways to explain, in the end, we lost a whole day with it and only me, Ragnar and Hinata understood the explanation at first.
After talking to them it seems that Ragnar already knew these things from having spent thousands of years alongside the God of Beasts as a simple Soul, so he learned a lot about Authority.
Hinata had the Soul of a Hero she is descended from within her or at least a fragment of that Soul, it seems that the reason she was enslaved so easily was by the power of Authority in the Soul fragment of the Hero of Light, it seems that these tragic moments they also gave him an instinctive understanding of the power of the Authority.