Well, I might be giving different perspective about this drama. After watching it all, in my opinion, 16 episodes are too short to tell more about the main roles stories and also the complexity of them.
I think the episode 1-12 catch the greater attention of all episodes. The potential of every characters show up. But the last 4 episodes are kinda giving less excitement. Many people become upset about it, yeah me too. But I think I understand the writer. It maybe because the writer wants to make 'everything falls right into place' thing. But still, it upsets me. Episode 16 is kinda confusing because most of the part tell about the bidding but the ending seems like too much jumping.
It's an introduction drama to start up world. So rather than showing the story behind, it highlights more on what step they're into. So it makes sense if in 3 years they are like jumping to a whole different situations.
I guess not everyone would like to see it. But I understand that every characters portray the real thing in real life.
Like Nam Dosan who has like everything (great parents, friends, smart, good looking) is lost inside. Many said he was a cheater, but he has a pure heart and never think to harm, he still learns to be more mature.
They are in their 30s, but it's possible for them to act childish. The unnecessary emotions are just unnecessary. But yeah, sometimes it happens in real life.
And what I learn from this drama is that, everything that start with kindness is always find the way.