I never expected I'd like this drama so much, I mean love with a robot seemed weird, but as soon as I watched the first 2 episodes, I really understood the angle this drama explored and I fell in love with it! I was glued to my pc and watched the bloody thing in a day and a half , it was that captivating for me lol. What I enjoyed was the great acting, I found most roles were distributed quite well, especially the leads. The multitude of funny moments were stellar, as well as the ' awww, so cute!' moments, because it is more than a robot discovering its human feelings, it's about a human discovering it's humanity and true self with the help of a robot, and that made it such a captivating story. The ending was perfect, although I wept like a baby, even more than I did after watching 49 days, I think, I was just sucked into the story really well, and although it was a sad ending, it was well suited and perfect. A word of advice : DO NOT WATCH THE SPECIAL !!!!!!!! It was a huge disappointment to me, it ruins the whole story and it has a very weak script.