Advertisement drama so maybe that is why it is not the best. We have Dawon - who was great in Doom at your service, here it felt like his debut and not the best one. Kwon Eun Bin also was really good in At a distance spring is green, here it looked like she struggle a little. Maybe it was directors fault, cause I do not know how to explain it other way. Plot was okay but it would work better with less episodes.