This Love Is Like a Song (2020)

It continues the story.
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Both are historical mini dramas with more than one season and a similar feel/tone. Both have a general FL and adoring but scheming ML.

Both are historical mini dramas with the same actor as the ML or SML. Both FLs are supposedly cursed/fated to be killed for the good of the kingdom, both MLs are princes who fall in love at first sight with the FL.

Both are historical mini dramas with two seasons in which the FL is betrayed by the man she loves, leading her to return with a different face to take revenge. In her plot she ends up involved with the man's brother who she eventually falls in love with.