Both dramas have similar situations at the base of the crime story and use similar status positions and characters.

Both dramas are psychological thrillers with aspects of family relationships, including sisters' relationships, school life and references to backstory. These dramas are suitable for careful and nuanced viewing.

Both dramas are psychological thrillers with aspects of family story, sisters' relationships, manipulation and references to backstory.

Both dramas are psychological thrillers with aspects of school life, family relationships, touching on themes of manipulating people, a mysterious female character with similar plot twists.