- rich male lead and passionate female lead relationship

- fake relationship turned into an everlasting one

Both series shares
- cult like organization
- leading people to believe in lies
- crimes by involving past incidents
- the lives of people closely tied with each other

Both drama is centered around......
- serial killer.....
- detective....
- thriller....
- investigation ....

Pretty similar vibes and themes such as
-extreme school bullying
-spoiled rich kids
-influencial parent cover ups child's wrongdoing
-insecured teens

-Both dramas surrounded school bullying
-Both drama has rich spoiled kid who is abused at home and take it out by bullying classmates
-Both drama gives same vibes

Both drama has
-Prison
-Scheme
-Corruption
-Deception
-Fighting against rich corrupt
The male leads are both very smart and lowkey mysterious in their ways. The Female leads are also smart and tricky.

Both are about the zombie apocalypse in Korea.
In the film, the zombies had been founded in the Peninsula of South Korea. Many people try to get out of Korea, but the world has isolated the country for four years since the outbreak in Busan in 2016.
In the series, some high school students are trapped at Hyosan High School during a zombie virus outbreak. The students desperately try to avoid becoming zombies and escape from their school.