Go back couple is one of my fave time slip drama. Once you watch the drama you will realized how close the story is to real life. Jang Nara and Son Ho Jun is perfect, their portrayal from the present to past are on point. The chemistry is also there. So sad that it's only got 12 episodes as in my opinion I still want to see more story on all the characters in the drama. But I agree that 12 episodes is enough to finished the show.
In life we made a lot of regrets, misunderstandings and suspiscions. Just like in the drama, all that will be solve if we have a good communication to each other. I recommend this drama to all. Worth the watch and it will make you laugh, cry, fall in love and reminisce the past.