He is concerned. Thats why. As someone who seems like they had the same past as yeomin (coming from a poor family), and him knowing that yeomin is not some pushover, he knows yeomin deserves to know all the behind the scenes that yeon is doing in his life
The secretary seemed kinda shady. It’s just the way he side eyed yeomin when they were at the restaurant. Idk I hope he doesn’t do nothing.