i might be cornplating but i noticed in the fading youth art that the characters with the wired head/earphones (mizi, hyuna, till) were meant to be from a civilian school in the original concept and the ones with wireless ones (ivan, sua, luka) from a noble school
QMENG:
"What stands out about him is his cheerful smile and attractive appearance, but I like the fact that these are things he has "learned." In fact, I believe the reason he appears mentally stronger than anyone else is actually because he has strong avoidant tendencies. However, to people who don’t know Ivan well, this comes across as calm and dependable which I find interesting.
When you keep in mind that he is someone who trained himself, almost by the textbook, in the skills needed to blend in well with other people, his lines become even more interesting."