Both dramas are about forbidden love between a teacher and a student in a pre-university setting and explore similar themes.

Both dramas are about a relationship between a male student and a female teacher in a Japanese high school.

Both dramas are set in alternate universes in which Korea is a constitutional monarchy today, and plots are similar in some way.

Both dramas offer a glimpse into the legal world from the point of view of inexperienced judges with a particular sense of justice.

Both are crime dramas with past settings involving serial killers and police officers trying to catch them.