As in the sense he has done business, not only among the rich, but also in the poorest and most criminal neighborhoods. And kinda breaks the norms of a typical Ceo ML in an" idol drama". Like he's really down to earth, and not afraid of "dirty" places nor anti-social, and instead is extremely good with handling with ppl of different backgrounds. 

Dali and the Cocky Prince and Bromance don't fit exactly, but they're in the ballpark.