1. The World of the Married (2020)

Rating: 16.9%

A revered medical doctor's seemingly perfect life is overturned when she discovers her husband's infidelity. In her pursuit to retaliate against his betrayal, a bitter back-and-forth ensues between the two as they both seek to exact revenge on the other. The World of the Married smashed TV ratings after its finale episode rated at 28.37%, breaking its own record of 24.44% which it had set just an episode prior.

2. Mr. Sunshine (2018)

Rating: 13.0%

A poor boy born into a house servant's family travels to the United States during the  1871 Shinmiyangyo incident. He soon grows up to become an American military officer who returns to his homeland and falls in love with an aristocrat's daughter, all while unveiling a sinister plot by foreign nationals to colonize Korea.

3. Goblin (2016)

Rating: 12.9%

A romantic fantasy drama, the series follows the story of a 939-year-old Goblin, also known as the Protector of Souls, as he ends up falling for the girl destined to end his cursed immortal life.

4. Sky Castle (2018)

Rating: 12.5%

This satirical drama revolves around four housewives residing in the exclusive residential area of Sky Castle. Ruthlessly ambitious, the women will stop at nothing to get their children into Seoul National University.

5. Reply 1988 (2015)

Rating: 12.4%

Five childhood friends who live in the same neighborhood of Ssangmundong rely on each other as they enter the peak of their turbulent teen years.

6. Crash Landing on You (2019)

Rating: 12.2%

The lives of a South Korean heiress and a North Korean military officer collide when the former lands into North Korean territory after a paragliding accident.

7. Itaewon Class (2020)

Rating: 11.8%

Ex-con Park Saeroyi and his misfit group of employees work to turn their modest bar into the number one pub in Itaewon. Reaching their goal turns out to be an uphill battle as they deal with the ruthless CEO of Jangga Co., a.k.a. the man responsible for setting off a chain of events that landed Saeroyi in jail in the first place.

8. Hospital Playlist (2020)

Rating: 9.9%

Five doctors who've been friends since medical school go through the ups and downs of their job in Yulje Medical Center, all while sharing their love for music by forming a band.

9. 100 Days My Prince (2018)

Rating: 9.0%

Lee Yul, a crown prince suffering from amnesia, ends up in the care of Hong Shim, an intelligent but unamarried woman, and her father. Thinking of himself to be a commoner, he weds Hong Shim to save her from being punished by a law that he himself established as a prince.

10. Hotel del Luna (2019)

Rating: 8.9%

Located in downtown Seoul, the peculiar Hotel del Luna has existed for several millennia catering to lost souls. It's CEO, Jang Man Wol, is cursed to run the establishment for all of eternity as punishment for a sin she can't remember. The only way to free herself from her penance is to find someone whose committed a crime far worse than hers. 

According to preview.ph