Both dramas are about life inside a prison. There is no shortage of harsh and bloody scenes and unjustly accused characters.

Both stories are about an older female teacher and a male student who falls in love with the teacher.

The two dramas have different stories, but the atmospheres are very similar. The stories are very sweet, with a veiled protest from today's society.

Both dramas take place in the 1980s, during pro-democracy movements which form the backdrop to a romantic love story.

Both the male protagonists of the two dramas are North Korean, while the two female protagonists are South Korean. They both talk about the difficult situation between North Korea and South Korea.