5 Korean dramas that were more successful than expected: One The Woman, The Red Sleeve, and more

Unexpectedly, these dramas below made big hits despite getting little promotions and not receiving as many expectations as Jirisan, Snowdrop, etc.
https://kbizoom.com/5-korean-dramas-that-were-more-successful-than-expected-one-the-woman-the-red-sleeve-and-more/