Both dramas are about the FL entering a screenplay into a fictional historical world where she is a supporting character. The FL then tries to return to the real world by controlling the story and falls in love with the story's villain.
Both have FLs from the real world who enter a fictional historical world (novel vs. screenplay) and become involved with the story's villain, all while trying to survive the plot and return home.
Both dramas have a modern day/future FL entering a historical fictional world and despite assuming they should end up with the ML, they end up falling in love with the villain.
Both are mini dramas in which the modern day FL enters the world of a historical novel or tv show. While originally trying to finish the story so she can return home, she falls in love with the story's villain and tries to change the plot.
Both are short length dramas with a real world FL entering a fictional world and trying to survive to return home. The ML is initially antagonist and tries to kill her.
Both are short length dramas with a real world person entering a story and becoming involved with the story's villain, all while trying to return home.