I think Junho has/had a family member that has some type of disorder or illness. From the comment of his old acquaintance, he volunteered a lot with disabled people and seemed to take an immediate soft spot for her. I have a feeling it's going to be revealed later and cause issues because wyw will think he took pity on her or something.
I think wyw father, hadaba ceo, and the rival law firm taesan (idk on the spelling) all know each other. I think we are going to see the other ceo more in the future, they wouldn't have introduced her via that interview and mentioning wyw for no reason.
This is an absolutely crazy theory but there's nuance here. Lawyers and attorneys are not the same thing. Attorneys represent clients while lawyers practice law and give legal advice/aid. Junho is a part of the litigation team, most likely a litigation lawyer. Now my wild theory:
I wonder if Junho is the taesan ceo's son. The interview made an interesting comment in episode 2 saying she had a son but "it seems like he hasn't figured out his dream yet, he just spends all day in front of a computer". This show wouldn't have showed her saying that for no reason. And you have to kind of think that a hot shot CEO and attorney would definitely look down on a son who just wants to do "grunt work" (a lot of which is behind a computer) on the litigation team.
It's wild but I don't know it's my main theory of the moment.