I've looked into the Japanese manga version and the ending was bittersweet. Most of the time, I go for dramas with happy endings since I don't want to feel sad and cry my heart out when it ends. So, I didn't plan to start watching this drama at all, thinking that a love between a robot and a human is doomed from the very start and would just lead to heartache. But my curiosity got the better of me and I pressed play. I kept watching after that and wished for more episodes. The male leads are gorgeous and the female lead's acting is believable. You can see great chemistry building up even if it's between a robot and human. The script is great too and will pull at your heartstrings: "We shouldn't throw something away just because it's old and worn out. Things become precious not because of what they're worth but because of the memories they hold". I'm definitely looking forward to how this version will end. Now, who's with me?

Update: I can't honestly say that I totally love this drama. It started with a good momentum but the sparks between main leads fizzled out towards the end. You'll also discover that the human ex-boyfriend was actually a good person who sincerely loves her. Although the robot was caring and loving, there were times when I wish she was dating a human. As I was watching this, I somehow couldn't wholeheartedly process a "love" between a human and robot. Although I understand the moral of the story that you have to cherish your feelings of true love and appreciate it in every moment, the reality is that you'll never grow old with a robot. The robot stays the same while the human changes physically.

I didn't regret watching this though because there were cute and fun scenes in between but I was taken aback by the haphazard ending. They could have made it clearer and not let the viewers make guesses.