emeraldarrows

Both FLs arrive in the world in some magical way and learn they have a destined match there. Both FLs assume SML is their match, while continuingly crossing paths with their true match, the ML. Both dramas have a similar vibe and characters.

Both MLs are idols who are suspected of having killed/caused the death of their band member/friend.

Both are high school stories in which the FL falls in love with the ML who already has a girlfriend or a crush on someone else.

Season 2 continues the story.
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Both FLs are spirited and strong women, the unfavored daughter of a wealthy family, who are forced into marriage with a general. The two overcome challenges and fall in love.

Both dramas are gender reversed mirrors of each other - the leads are a boss and their secretary who suddenly informs the boss they are quitting for personal reasons, sending the boss into a tailspin and leading to romance.

Season 2 continues the story.
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Both are love stories between the snake demon FL and the human ML. Both have a similar vibe and plot.

Green Snake is the sequel to White Snake.
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Both FLs suffer from a trauma related mental health issue, but have no memories of the event that caused it. Both couples knew each other as children and went through the event together, but FL has forgotten and ML doesn't realize it's her. There's another man who has an unrequited love for the FL.

Both are xianxia dramas in which the MLs are demon lords, and the FLs immortals who have a past life connection to the ML. Both SMLs are the FL's master who she is devoted to but has secrets of his own. Both plots have the FL thinking the ML betrayed her and later discovering the higher immortals are manipulating her, pushing her into killing the ML as she did in the past.

Both leads grow up as semi adopted siblings. The FLs are younger and high spirited, MLs are older and troubled. Both dramas have several year separations between the leads in which FL becomes more mature and ML endures emotional and/or physical trauma before the two reunite.