Both dramas have twin sisters with different personalities. One of the sisters is gentle and kind while the other is lively and naughty.

Both the drama and movie include the son of the FML going back in time to help their mom and dad be together.

Both the female leads can see a persons time however Lee Sung Kyungs character can see everyone's time while Yanna can only see a person's time if she hold their hands.

Both are cute romances between a male boss and a female employee. The boss seems a bit cold at first but will warm up as the story unfolds.

Both male leads are wealthy CEOs and have some type of "disease" or trauma.
Both female leads are hired as the male lead's body guard.

Both have are writers/cartoonist and their "villains' come to life. Both are under the romance and comedy genre as well.

They both have a domineering CEO and deal with amnesia. They are both have elements of romance, comedy and drama.

They both have a fantasy and supernatural aspect. One has a messenger from the gods and the other is an angle. Both fall in love with a human.

They both have to do with dubbing and the main lead falls for the CEO of the company that they are working for or with.

Both female leads try and find out the reason behind their parents death, (in Miss Truth, it is just her mom) and they both take place in a historical era.