Goodbye, Sadon!
Goodbye, In-Law!·굿바이 사돈!
Two people who disliked each other in high school, Han-Eol and Da-Hae, reunite years later when their siblings marry. After a tragedy befalls the newlyweds, Han-Eol and Da-Hae find themselves back in high school with their siblings still alive. Using a diary, they attempt to change the future and prevent the tragedy.
