"All the fan service and cringe of K-dramas rolled into one drama" would be the best description for this. What's the point that the writers wanted to convey would be one question few would have answers to. Another one of recent addition to K-dramaland which started strong but after 6 episodes became a chore with repeated sequences and cliched love scenarios. There is nothing in terms of screenplay and story building.
Positives: If you are in the 'honeymoon' phase of a relationship with your partner this would feel like a good watch. The side characters had better development than the leads.
Negatives: Should have been a 8 to 10 episode drama. People who don't like stories dragged like a chewing gum should avoid it.