Irreplaceable Love (2020)

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I dont know what to write so uhhmm... have a good day :))







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It's like Irreplaceable love cuz they are like brother and sister ,the girl is older than the guy and the guy had some kind of allergy .
The allergy in" irreplaceable love" is of egg while in " my sweetest secret " is of sweets .
Yes they have similarities.

Both dramas contain a "fake siblings" storyline with the main leads that eventually turn into love.