Although it only have 12 episodes, I didn't feel like they were rush it. The series contained all the right ingredients for the ideal show and it got me hooked up from the first episode, it has no too many bureaucracy and not too many lovey-dovey scenes just the prefect amount. I watched 'Are you human' about an AI falling in love with a human, but it didn't feel right, I didn't like that show, but here it felt real, maybe because the bottom line was that an AI can never be a replacement for human contact.
The chemistry between the two main actors felt real and the male lead felt like an actual human being (unlike other series, where I felt that the male lead is over the top). Netflix Kdrama are so different from the regular Kdrama and its a good change, I hope they will have more series like that.