I watched this unique drama when it first came out and I did not have any expectations for it. But wow this one is definitely a hidden gem. If you like sci-fi/romantic comedy kdramas then you NEED to watch this one. First of all I loved the storyline, I swooned over Nan Do, I think Yoon Hyun Min is a wonderful actor and his duality between the two different characters was very well done. I loved Nan Do and So Yeon's chemistry and their growth as individual characters, I loved their differences as characters. This drama made me laugh, cry, and feel warmth. Definitely a gem on netflix in their kdrama category!