Ko Sung-hee (Korean: 고성희; born June 21, 1990) is a South Korean actress.

[3] She played her first leading role in the fantasy-period drama Diary of a Night Watchman (2014).

[4] On October 17, 2022, Ko's agency announced that Ko will marry a non-celebrity boyfriend in November.

[5] They married in a private ceremony on November 20, 2022, in Seoul.

[6]