Everyone here had an image of an Aura Knight as old people, or perhaps, at middle age if they are quite talented.
It's because they know how difficult it is to become an Aura Knight. Furthermore, most of the Aura Knights they have seen were already at this age. They have never seen a teenager that has developed his soul to this extent!
'This is incredible! Is he related to the royal family?'
'I wonder if he's hiding his true identity…'
The disciples of the primal sword sect started speculating.
They know that Soul Cultivation is an arduous path. If you aren't from the few families who have already strengthened their souls, you wouldn't inherit their strong soul force making it harder for you to develop yours.
In addition, without the Visualization Method to help with the cultivation, it's basically impossible to become an Aura Knight.