Uri Sangnyuyeonae Halkkayo?

Handsome, stylish, and capable, Jinah is often mistaken as the heir of the company he works in. In reality, his polished look is just that–a facade he maintains in hopes of entering elite society. It’s not easy to keep up appearances, but Jinah is surely inching up the social ladder. Until, that is, a bungling subordinate nicknamed the “ticking bomb” is assigned to his team. Like Jinah, though, new team member Do-hyeon is not who he appears to be.
(From Lezhin)