Both are really good.
both have historic look
both have some twisted love stories.
Just watch then both. ????

Both dramas have huge similarities.
*Both dramas have comedy.
*Both are historical dramas.
*Both involve time travel.
*Both have their own type of romance and case solving.
*In both, the person coming from the future shares her/his knowledge with the people in past.

Both dramas are crime thriller dramas. Both are really influential for the viewers emotionally. In both these dramas, the male lead goes through a series of difficulties to uncover their past.