Both are historical dramas in which the FL is tricked into marrying an ill husband. Both FLs are upbeat and end up curing him.

Both are historical dramas of a shorter length in which the FL is determined to marry.
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Both are historical dramas that begin with the FL having a fiancée and plan for life and then her fiancée backing out of the marriage. She then becomes stronger from the setback and sets out to accomplish her goals.

Both have the plot of a young couple from different social classes who separate but still are drawn back together, as well as a similar tone and feel.

Both are mini dramas in which the lead is an identical twin who, following their twin's death, ends up posing as the dead twin. Both leads met in school.

Both are mini dramas in which the modern day FL transmigrates into the body of a different person in a historical era and becomes involved with the ML. Both FLs work with bodies (mortician vs. coroner) and use their knowledge in the past.

Both are shorter length dramas in which the modern day FL transmigrates into a historical era and becomes involved with the ML who is ill. She has medical knowledge and treats him.

Both are dramas in which the modern day FL transmigrates into a historical era and becomes involved with the ML.

Both MLs are poisoned/weak. The FLs help cure them. Both are shorter length and light historical dramas.

Both are historically set. Both MLs were poisoned young and are treated/helped by the FL.
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In both dramas, the FL transmigrates into the body of another girl. Both MLs are ill from poison. Both dramas are historical and fantasy genres.

In both dramas, a modern day FL enters historical times and falls in love with the ML. Both FLs have medical knowledge which they use to treat the ML.