emeraldarrows

Both are mini dramas with humans who have animal traits/genes. One is a dog and the other cats, but both have a similar fun tone.

Both MLs are cats in human form who continue to have cat mannerisms/behavior.
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Both are about a cat in human form.
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Both are about a cat in human form.
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Both are about cats in human form who help humans,
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Both are about cats in human form who help humans,
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Both are mini dramas in which the FL becomes involved with the ML to betray him for the person she works for, only to fall in love. Both FLs are smart and strong.

Both are mini dramas in which the FL becomes involved with the ML to betray him for the person she works for, only to fall in love. Both FLs are smart and strong.

Both are about the FL's sister suffering an accident, leading to the FL taking her sister's identity.

Both dramas are historical and have a quirky tone. The MLs are of higher social status/wealth than the FLs, and the FLs earn their living in a way that requires they evade the law. Both FLs tell a lie to save themselves that connects them to the ML in some way (pregnancy vs. claiming to be possessed by his dead wife) and then end up telling more and more lies as time goes by.

It's the spin-off to the original drama.
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Both are about a lead character who can see and lives with ghosts and has a colder/distant personality. Both MLs are stage magicians who incorporate ghosts into their theme or tricks.