It was really good in its first episodes, but the storyline was getting dull and boring as it continues.
12 episodes is more than enough for the story

I am stuck at episode 15 and can't continue it -_-

I guess people who watch the full drama and rate it high probably like the male and female lead actors, well I do also, but it is just hard to finish the last three episodes

one of the most funniest K-dramas I have ever watched
Highly recommend it to people who want to laugh and don't want to use their brains at all