I'm not sure as well but if you kind of compare their looks the disguise looks sleazy while the original looks elegant and may be powerful, which means it creates a different aura of the person. It will then make you seem familiar with the other person, but ultimately dismiss the idea as they feel familiar but athe same time they actually don't. I think? AHAHAHA
Its not obv but kishiar's disguise have a brown hair (lighter in the manhwa v close to dirty blond) which removed the iconic golden blonde of the royal family. And it yes, as mentioned above, it creates an illusion that kishiar is your average joe. Someone who blends with the crowd unless u pay xtra attention to them. Thats why yuder said its very sophisticated cos you wouldnt know and realize he is the duke unless u know .
I'm kinda confused that when mc said Kathiar's disguise is extreamly sophiticated. BUT I didnt see the difference in appearance of Kathiar when he is in the examination room and when he is out there to welcome the nee joiners. Can someone pls helpe explain how the disguise is sophisticated?