Short: Really nice pace, really good characters, has some clear evolutions in the story making it feel like it's moving at a decent pace throughout... and then just stops. Totally feels to me like this 18 episode story was meant to be 20 and they cut it, so while it has an ending, it just isn't satisfying at all.

Detail:
I was hooked on this one throughout, Kim Tae Hee and Joo Won are both excellent and they are surrounded by a great cast as well. The story has an interesting premise and moves along at a nice pace throughout so it was always interesting but i'm left at the end of it just feeling like the story ran off a cliff and suddenly stopped as soon as they could possibly do it - it's like the final seconds close out the loop, the [final thing] happens and boom - credits.

I always prefer a nice run-out to my stories, let's see them live their best lives now that they've worked hard to get there.

I don't really have anything else to be sore about on this drama, if it had a decently closed off ending this would have been at least a 9 if not a 10 for me but I hated that rushed ending.

To be clear, it DOES have an ending, it DOES have closure, it's just supremely rushed which undid the great work and pacing prior.

So i'm conflicted about recommending it as a watch - on the one hand, it's great fun and I really enjoyed watching all the characters, but on the other - if you're like me and you like the long run-out endings be prepared to be checking your netflix player to double check you didn't just run out of internet or something :)

I did note with some amusement that near the start, she transfers 2 million USD to him that needs a password to release that he'll get once he gets her out of the hospital... and at no point at all during this did she ever actually do that - it's like that whole thing was just forgotten about because it was inconvenient, instead he ended up relying on another source to help his sister (because that was more story-angst-ridden :) ).