If you have watched several kdramas and you are getting bored of seeing the same plots over and over again just watch this one.
This series is so good. It is funny, entertaining, interesting, the actors are superlative, the lines are not cringey and most importantly the plot is unheard of (at least as far as the things I have watched). Often comedy comes off cringey in these type of series, given the fact that at the base of the story there is something which is very dark, but this one manages to pull it off very well. I wasn't that angry at the ending either (which is something new for me).
This is to say that if you're controlling the reviews and wondering whether to watch it I suggest you to do so!
Obviously this is very different from other Kseries so it might not appeal to everyone.
Just know that if you like mystery dramas but lighthearted ones, try watching this one, no romances but great chemistry and relationships between the characters. It is unexpectedly unique and funny.