Both are mini dramas in which the FLs are immortal and run a place where they help visitors with their problems. Both MLs were their love from their past life, now reincarnated, and both couples lives are connected to each other that only one can survive.

Both are mini dramas in which the leads were a couple and broke up. Years later, FL is now raising their sick son who ML never knew existed, and ML is in a wheelchair. He blames the FL for abandoning him when he was injured and torments her, and someone connected to the ML fakes the child's paternity test to claim the boy is not his. Slowly, the couple reconciles.

Both FLs are talented coroners and MLs are initially disguised princes who work together to solve a case.

Both are short length dramas in which the FL is a talented matchmaker with some uniqueness regarding red threads.

Both FLs are talented matchmakers and ML is antagonist to them at first since she is his rival in some way. The two eventually fall in love.

Both are mini dramas in which the FLs has many suitors to choose between and ends up with someone unexpected.

Both are minidramas in which the younger ML approaches the older FL romantically, all for the purpose of getting revenge as he blames her for the death of his family member.

Both FLs grow up as sweethearts with a man who to protect them wipes their memories and sends them to marry another man, continuing to support them from the background. In PS the FL ultimately falls in love with someone else, in TLLTM she returns to him. Both dramas have palace scheming.

Both FLs lose their memories and start entirely new lives, while the MLs who loved them re-enter their lives and help them.

Both are short length vertical dramas with a censored LGBTQ+ relationship between the leads, one of whom ends up in the opposite gender body and falls in love with the ML.

The movie is a sequel to the drama and continues the story of the leads after they're adults.
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Both FLs are the older teachers of the MLs who start out rebellious but quickly fall head over heels for the FL and start chasing her.