Wasn't going to watch this at all, yet it won me over with the cool aesthetics and mystery. I especially love the 1930s parts which, though short, are well-executed. It's also nice to see Im Soo Jung back in dramaland.
My Secret Romance
It's fluff, but Sung Hoon is funny and charming and I'm easy.
Reminiscent of White Christmas, but it's actually its own thing.