Both dramas have the same director and screenwriter. They are about office romances between a female secretary and her male boss.

Both stories are love stories about a human and an artificial intelligence, where in the end something unexpected happens.

In both dramas the female lead is the the same and has strong chemistry with the male lead.
Both relationships have reasons, why they shouldn't be together. One person has caused the other harm in the past and they need to overcome that.

Both shows give insights into the private lives of famous people. The comedy and life lessons shared are what make both shows hits!

In both dramas one lead has a serious problem that goes away if they are together with the other lead and that's why they keep them close.

Both stories deal with supernatural beings that interfere with the human realm and what happens when not all of these supernatural beings are on the same side.

In both stories the female lead finds a male lead she knows nothing about in front of her house and takes him in as her housemate.

The male lead is protecting the female lead from her family and from the rest of the world without realizing his feelings for her.

Both are about two brothers that are in love with the same woman and the conflict that arises from this love triangle.