I just finished watching this series and it was nicely done. I'd rate it an A. The storyline and cinematography was great. The acting was great. However, the leading lady's voice & acting was a little annoying cause she was trying to act like a naive child but you'll get passed it. The male lead totally captivating. He has such an edginess about him but he's not afraid to be vulnerable. You've probably read in some comments that the ending was ambiguous and disliked it but in my opinion it wasn't a terrible ending. It's open for your interpretation and I would encourage you to still watch it. Everyone has their own opinions and it's for you to decide. There's only 13 episodes that are a little over an hour long but it flew by so fast that it felt like only 30 minute segments. Like every drama series they go through relationship trials and tribulations and they certainly had to overcome obstacles but its such a short series that you didnt feel like there were non-sensical fillers included. The chemistry between these two male & female lead actors were undeniably present. Although they grew up as brother and sister there's no blood relation between them. Their relationship is sweet and endearing because of growing up together. How many of us can say that they have found that one person in life who's truly been there by their side through thick & thin and who has seen you at your darkest moment from the beginning.