emeraldarrows

FL is from a different world, travels to historical times, and meets the ML who is suffering from some illness she can treat/cure.

Modern day FL time travels to the past, falls in love with royal ML.
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FL enters the body of another girl and must live her life. Main couple clash/dislike each other at first, but later fall in love.

FL travels from modern day to historical times. ML is unique in some way (strange illness vs. being non human) and intrigued by the FL before he falls in love with her.

Both are lighter dramas with a FL who comes from a different world and enters the body of a girl who has died, taking over her life. ML is royal, suffers from some medical condition, and is initially antagonistic/threatening toward her, but she is the only one able to help/cure him. There is scheming within his family to replace/kill him.

Modern day/future FL travels to the past and falls in love.
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Modern day FL faints and finds herself in the past. ML seems cold at first but is intrigued by her and both fall in love.

In both dramas the plucky, outspoken FL ends up sharing a body with a weaker, more delicate girl who had an unrequited love for someone (ML vs. SML), and who eventually loses her life saving the FL. The lead couple initially dislike each other, but the ML becomes increasingly intrigued by the FL's behavior, leading to him falling in love, and eventually she loves him, too.

FL's spirit is in another girl's body.
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In both dramas the FL ends up in another girl's body, married/engaged to the original girl's husband/fiancée. The main couple are antagonistic at first but later fall in love.

Both are short dramas in which the FL is living in a different girl's body.
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Both are short mostly fluffy romance dramas in which a girl takes over the body of another girl and falls for the original girl's fiancée.