My head canon is that he still does it cause he has a kink for office bdsm LOL. If anything I feel like Taemoon might bring it up first, cause he's way more conscientious about it.
i think its important to remember korean culture in this case, like japanese the 'titles' come after the name and they all can be used in a variety of situations. like i believe -ssi (mr.) can be used for people above you in a hierarchical system like an office and/or its for a more formal relationship and to show respect. but yeah ide if it makes it any better but hes actually calling him jeong-ssi which isnt always a power thing, hes also younger than taemoon which plays a part in that
I love this story so much and think they’re so cute together, but I wish Seonwoo would stop calling Taemoon ‘Mr. Jeong’ now that they’re officially together. It just gives me weird power imbalance vibes and I get uncomfortable every time he says it