Famous writer Kdrama

Hey guys,  I'm looking for a Kdrama that I watched a while ago but I can't remember the name.  ML is a famous writer but no one knows his real name nor what he looks like, I think everyone knows him under a pseudonym. From what I remember he comes from a rich family, they own a business and he lives abroad and writes romance novels. Specific scene that I remember is from the airport because he always has a big hat on.