both about an organ that the main character receives which connects the donor to the recipient.

some things start to affect the main character's body. he tries to control the changes happening to him and preserve his sense of self.

the main character's body changes after an incident/ accident. the main lead tries to control the changes that are happening to him. maintain his sense of self as the changes don`t just effect his body but his mentality too.

similar story but different culture, country and conclusion. the main lead loses a family member and goes after the one responsible who didn`t get punished. the main lead goes to jail then when he gets out he fights against the person who covered it up.

both have a guy trying to get revenge for what happened to him when he was a child at an orphanage. both male leads are trying to expose the corruption of that orphanage.

both have three characters that have interconnecting storylines. one is trying to for out about his past/ identity

both are set in ancient times. both follow 3 characters that have interconnecting storylines.

both are about a mystery and a police investigation. both main like start out like the good guys and you end up rooting for them only to discover that you shouldn`t have.

set in a school. one of the male leads antagonises, annoys and flirts with the other.

office romance. past encounter. one of the main leads plays hard to get and the other chases

office romance. both have opposites attract. one of the main leads plays hard to get while the other chases

the simularies are that the love story spans for a 1000 years and the male lead loves the female lead more that she loves him actually she has forgotten him so they fall in love again but again they are driven apart by an unknown force.