emeraldarrows

Both FLs are human and MLs are a demon who are bound in some way to the FL. In both, there are mysterious crimes taking place.

Both are about a deity who comes to earth, first appearing by tumbling into the marriage temple where the other, human lead is. Both are historical and have a similar feel.

Both are movies set in the palace in the same era with a star-crossed love story between a royal and a palace servant that endures many challenges.

Both are historical mini dramas in which the leads once were close, then the FL undergoes something traumatic and returns with a new identity. Both dramas are centered around revenge with a love/hate relationship between the leads.

Both are mini dramas with the same actor as the ML, in which the FL is betrayed and returns for revenge against the ML with the two falling into a love/hate relationship. Both are historical, although set in different eras.

Both are short stories about a personified phone's relationship with his or her human.
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Both are short BL films depicting a breakup and reunion between the leads. Both have a bittersweet feeling and relate in some way to food (one cooking for the other vs. opening a café to wait for the other's return). Half has a happy ending, TSPR has an open ending.

Both have a school setting and a bickering childhood frenemies to lovers relationship between the leads, with one bullying the other.

One is the drama, the other a short cute spin-off.
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Both are short length dramas in which a man swaps places with his sister as the bride in an arranged wedding.

Both are mini dramas in which the FLs are wronged and must form a plan of revenge and escape for themselves. Both have a similar feel.