@gaigous
It does not disappear in this story, though. Desir already stated his prediction that he and his party will not be fully accepted even if he achieves getting to the top of the tournament/test.
@Keimichi
I'm pretty sure the requirement for completing the shadow worlds is to force the event into reaching an opposite result. Like if the event is a castle siege and the humans pushed back the monsters, you will have to help the monsters succeed in the shadow world copy.
The King exclaims that his sight is sharper and that the glasses "has two" meaning he is used to monocles. I don't think medieval monocles are better for maintaining eyesight than modern day reading glasses.
@Vasqueztion
Sometimes princesses would be sheltered and hidden from society before their debut. Lowly street thugs would have very low chance of knowing who they are.
The only things in combat Yun-chan excels at are range and accuracy. Her defense and HP are low that she will die in 2-3 hits from monsters of the same level as her. Her damage output is sub-par. Her reaction time is also sub-par.