Both of these titles center around a relationship between a young woman and a much older man who work together. Through the relationship that is formed, both parties are able to grow and overcome the difficulties they face.

Both series are about a teacher and student falling in love. The teachers both love their job and really want to work hard and inspire their students to become their best selves but their feelings for one of their male students threatens to derail their career. They struggle with rejecting the advances of the student as their feelings continue to grow.

The main character in both series are doctors and their work is a major focus. A lot of the issues that the main characters have to deal with in their interpersonal relationships are similar.

Both series deal with an older woman who becomes involved with a high schooler. The women are unsatisfied and unhappy with their current lives and must figure out what they need to do in order to live fulfilling lives.

Both series deal with an older woman/younger man relationship were both men are dancers. The women in the series are unsure and unsatisfied with their current life.

Both titles are about an older woman's interest and fascination with a high school aged boy. Both female leads really like the smell of the younger boy.

In these series, both male leads project a false persona around others. They only reveal true emotion through written correspondence with the female lead without the female lead knowing it is them. Both pairings also have a large age gap.

Both series have a main male lead who is morally upstanding in an increasingly corrupted work environment. Both of their bosses also dislike them and would like to see them fired.

Both titles blend modern day Korea with traditional Korean culture. They also both have the rich man/poor woman trope.

These titles are similar because there is a need for an heir and in that desperation it is requested that one takes the place of another (because there is an inability to conceive) to ensure that an heir is produced.

These movies are similar because in both a family moves to a rural town. The teenage boy becomes close with the outcast girl at his new school. There are rumors around the town about the girl and her father that leads people to mistreat them.

Both take place in convenience stores with weird characters and strange occurrences happening regularly.