One is the drama, the other a spin-off with additional stories with the characters.
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Both have shamans, dark magic, and evil, as well as a royal lead under some sort of a curse. Both dramas have a similar vibe.

Both have a palace setting, dark and unusual vibes, and a star-crossed romance, as well as powerful shamans.

Both are mini dramas in which the couple is married and happy, and then the ML is seemingly killed in a tragic accident that may have been murder. Years later, he returns, pretending to be his identical twin brother, to solve his "death". The FL is increasingly suspicious and gets a DNA test which the ML switches to hide his identity.

Both FLs get drunk at a party, have a one night stand, and later discover they're pregnant and can't remember who they slept with. Their search for the father causes them to become increasingly involved with the ML who has long had a crush on them and steps up to support the FL and unborn child.

Both involve a being who can enter dreams and falls in love with a human. Both are short length dramas.

Both are mini dramas with the same plot.
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Both dramas have the same plot - FL faking mental disability to achieve her goals, both MLs wealthy and disabled.

Both are mini dramas in which the ML is allergic to all women except the FL.
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Both are mini dramas in which the ML is allergic to all women except the FL.
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Both are mini dramas in which the ML is allergic to all women except the FL.
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