Ku Hye-sun (born November 9, 1984) is a South Korean actress, singer-songwriter, composer and director. She is best known for her roles in the television dramas Pure in Heart (2006), Boys Over Flowers (2009), Angel Eyes (2014) and Blood (2015).


Ku Hye-sun's family consists of her mother, father, and one older sister. While growing up, Ku initially dreamed of becoming a singer. She eventually formed a vocal band with college friends, but due to her gaining popularity through the internet as a model she put those goals on hold.



Ku Hye-sun entered the entertainment industry after gaining popularity on the Internet as an ulzzang. She then signed on with YG Entertainment and trained in both singing and acting. Originally set to debut as a singer (supposedly in a three-member girl group with 2NE1's Park Bom and Sandara Park), YG Entertainment CEO Yang Hyun-suk advised Ku to pursue acting rather than music. She made her debut in a CF for Sambo computers and then made her television debut in the KBS horror series Anagram, and continued to appear in one-act dramas. Her performance as Hye-jin in the 2004 MBC sitcom Nonstop 5 attracted the audience's attention.

Ku soon rose to fame in the 2006 television drama Pure in Heart and surprised critics with her performance in the historical drama The King and I. She is most well known for portraying Geum Jan-di in the mega hit KBS2 drama Boys Over Flowers opposite Lee Min Ho, which was her breakthrough role and gained her pan-asia popularity.

After a year in limbo with no broadcasting slot, her first pre-produced drama The Musical finally aired in September 2011. Ku next starred as a female pilot in the SBS series Take Care of Us, Captain, followed by Absolute Darling, the Taiwanese drama adaptation of the manga Absolute Boyfriend.

After two years break from acting career, Ku appears in MBC channel’s two-part documentary drama Heo Nanseolheon. She took part in the program’s narration and production as well.

Ku then made a small screen comeback acting in SBS's Angel Eyes in 2014. She portrayed the role of Yoon Soon-wan, a legally blind woman who gets her vision back in an operation and decides to embrace life with passion by becoming an emergency rescue worker. On September 2014, TVXQ's Changmin and Ku appeared in BeatBurger's music video "She So High".

In February 2015, Ku starred in KBS drama Blood. She plays the character Yoo Ri-ta, an arrogant genius physician who entered medical school at a young age of 17. Ku and the lead actor of the drama, Ahn Jae-hyun shot footage in Romania for this drama. Although Blood suffered low ratings in Korea where Ku was criticized for her bad acting, the drama was well-received internationally.

On November 6, 2015, Ku was confirmed to be starring in a Chinese drama, The Legendary Tycoon alongside Hans Zhang and Joe Chen. The Legendary Tycoon tells the life story of Run Run Shaw, a self-made entertainment mogul from Hong Kong. The drama is scheduled to be released in 2016.

Singing and Composing

In recent years, Ku has displayed her vocal talents through soundtrack releases as well as digital singles. In 2005, she released her first single "Happy Birthday to You" for Nonstop 5. In 2006, she released the track "Sarang Ga" ("Love Story"), which became the title song of Pure in Heart. In 2012, Ku released her first self-composed soundtrack, titled "Fly Again" for SBS's Take Care of Us, Captain, which she stars in.

Ku released her first album Breath in 2009, an album of new-age music which included her composed song for her friend and singer, Gummy, entitled "Around the Alley". She then released her self composed and written digital single "Brown Hair" in 2010, with the music rearranged by bossa nova pianist Choi In-young. In 2012, Ku released "It's You" and its music video. She not only wrote the music and lyrics of "It’s You", but also filmed and edited the music video. In 2014, Ku released her 5th digital single "Happy", which is also a remake to Seo In-guk's song "Were We Happy". Throughout the years, Ku composed and released numerous singles.

In 2015, she released a second album titled Breath 2, which serves as a follow up to her 2009 album Breath. The title track "After 10 Years 100 Years" is a remake of the OST from the film The Peach Tree.

On 29 April 2015, Ku’s piano piece "Rain" topped the QQ music chart, China’s largest search engine. Released six years previously, the song gained attention due to the attention given to Ku's drama Blood.

In 2016, Ku released the song "Written and Erased", which is a collaboration song of Ku with The Blind.

Directional works

Ku made her official debut as a director through her short film The Madonna. The film which was centered around the topic of assisted suicide, debuted at the 2009 Puchon International Fantastic Film Festival. The film was featured in several film events, including the Asiana International Short Film Festival and the Pusan Asian Short Film Festival where it won "Audience Award" category. The Madonna also won the "Spotlight Award" at the 12th Short Shorts Film Festival which was held in Tokyo from June 10 through 20, 2010. She shared that the reason of herself making film was "It’s not like I dreamed of becoming a filmmaker since I was young. I’m interested in many things, including music, art and literature, and I thought I could incorporate all those things by making a film."

The following year, Ku directed her first feature-length film Magic. The film was invited and screened at the 6th Jecheon International Music & Film Festival (JIMFF) from August 12 to 17, 2010 and the 23rd Annual Tokyo International Film Festival. She continued directing short films such as You (2010) Fragments of Sweet Memories (2012), as well as trailers for film festivals. The 3D short film Fragment of Sweet Memories, which features actor Yoo Seung-ho, is a story about reminiscing over life's treasured moments from the past. It was selected as one of Korea's outstanding 3D films, and was shown at the Cinemountain in Busan Cinema Center during the International 3D Festival (I3DF), which Ku was the goodwill ambassador of. The film was also selected as a finalist for the Seoul Senior Film Festival, and received citation from the Mayor Park Won-soon.

In 2011, Ku established her own company, Ku Hye-sun Film, under which she would produce and film her projects. Her second directorial feature The Peach Tree was the first film made under her newly established production company. She also wrote the theme song and novel version of the film. On October 25, 2012, she was awarded the Minister Commendation at the 14th Annual Republic of Korea Design Award for the The Peach Tree.

In 2014, Ku announced and released her fifth directed film, Daughter. Not only did she took part in producing, script-writing and directing of the movie, she also plays the main character as a mother who gives her daughter an oppressive corporal punishment. The film aims to address and make known to society the problems of child abuse. Daughter was invited to Busan International Film Festival.

Other activities

Aside from her acting and directional works, Ku participates in a wide range of projects, including writing and drawing as well as ambassador activities. In recognition of her versatility and talents, Ku was voted as the Best Female Artist in the Entertainment Industry in 2012. She also received the Korea Fulfillment Award, and the Ministry Award for "sharing happiness" for her charitable acts.

In 2009, Ku published her first illustrated novel Tango (탱고), centered around a 20-something young girl who goes through two separate relationships to finally mature into a woman. The book was a bestseller, selling 30,000 copies within a week. Its release coincided with her first solo art exhibition, also titled "Tango," which was held in July 2009 at La Mer Gallery and attracted a total of 10,000 visitors. The exhibition featured around 40 of Ku's illustrations, some from her novel. She has also done artwork for Gummy's fourth album Comfort. In September 2012, she held her second solo art exhibition titled "Afterimage" at the Hangaram Design Arts Center in the Seoul Arts Center, showcasing 120 of her art pieces, then donating all proceeds from the sale of her artwork toward purchasing "clean cars" (germ-free automobiles) for the Korea Leukemia Patient Group. In 2013, Ku attended the Hong Kong Contemporary Art Fair, where she once again showcased her artworks. Ku was recognized for her artistic talents and was appointed the 2013 Cheongju International Craft Biennale (CICB) ambassador, as well as the ambassador for ArtisTree, an organization to encourage arts.

Ku also participates in charity projects. In 2012, she participated in the "Big Smile Project", a campaign to spread hope through smiles. She has also directed a trailer for 14th Persons with Disabilities Film Festival (PDFF) in which she used "sign language" to show that people born with disabilities do not differ from normal people in needing love. In 2013, Ku participated and supported The Gray Ribbon campaign, which was organized by Milral Welfare Foundation to promote disability awareness. In 2015, Ku alongside with her dog, Gamja, supported Yellow Lead Campaign which aims to reduce the number of abandoned dogs.

Personal life

On March 11, 2016, Ku was confirmed to be dating her Blood co-star Ahn Jae-hyun since April 2015. The couple officially registered their marriage at the Gangnam district office on May 20, 2016. They announced that instead of holding a wedding party, they would donate the money to the pediatric ward of Severance Hospital.


As Actress

Television drama

2004Nonstop 5Hye-sunMBC
Drama City – AnagramNurseKBS2
2005Drama City – Everybody Cha Cha ChaKBS2
Ballad of SeodongEun-jinSBS
2006Pure in HeartYang Guk-hwaKBS1
2007The King and IQueen Je-heon/Yoon So-hwaSBS
2008Strongest Chil WooYoon So-yoonKBS2
2009Boys Over FlowersGeum Jan-diKBS2
2010Ku CineHerselfMnet
2011The MusicalGo Eun-biSBS
2012Take Care of Us, CaptainHan Da-jinSBS
Absolute DarlingGuan Xiao FeiGTV
2014Heo NanseolheonHeo Nanseolheon/
Documentary narrator/
Angel EyesYoon Soo-wanSBS
2015BloodYoo Ri-ta/Yoo Chae-yoonKBS2
2016The Legendary TycoonHu Bi YuTBA


2007August RushGirl on couch (cameo)American film
2014DaughterSanalso credited as director and screenwriter

Variety show

Brain SurvivorGuest
2005X-ManGuestSBS#46 Ep.102-103
Happy Shares CompanyGuestMBCHappiness in ₩10,000 Ep.57 versus Jeong Hyeong-don
2006Ya Shim Man ManGuestSBSEp.174
Happy Together FriendsGuest
2008ChangeGuestSBSEp.13 with Tablo & Kangin
2009Happy TogetherGuestKBS2Season 3 Ep.93 with Kim Hyun-joong, Kim Joon, & Park Jung-min
2014Running ManGuestSBSEp.190 with Angel Eyes cast
The Return of SupermanGuestKBS2Ep.27 with Jang Hyun-sung's family
2015Happy TogetherGuestSeason 3 Ep.385 with Ahn Jae-hyun, Ji Jin-hee, Kwanghee, & Seolhyun

Music video

YearSong TitleArtist
2002"We Match Quite Well"Sung Si-kyung
2004"The Reason I Close My Eyes"Taebin
2006"Forget You"Soul Star
2007"Yesterday Is Different from Today"Kim Ji-eun
2010"Touch Your Heart"Fahrenheit
"Brown Hair"Ku Hye-sun
2012"Marry Me"
2013"With Laughter or with Tears"Seo In-guk
"It's You"Ku Hye-sun
2014"She's So High"Beatburger
"Floral Rain"Ku Hye-sun
2015"After 10 Years 100 Years"Ku Hye-sun
" A Day Without Sound"Ku Hye-sun

As Director

Feature film

YearTitleCredited asCastRef.
Im Ji-kyu
Seo Hyun-jin
Kim Jung-wook
2012The Peach Treedirector,
music director
Jo Seung-woo
Ryu Deok-hwan
Nam Sang-mi
Ku Hye-sun
Shim Hye-jin

Short film

YearTitleCredited asCastRef.
2009The Madonna
(aka The Cheerful Caretaker)
Seo Hyun-jin
Kim Myung-soo
Jun Tae-soo
Nam Sang-mi
Choi Il-hwa
2012Fragments of Sweet Memories
music director
Yoo Seung-ho
Choi Il-hwa
Ryu Young-jae
Yang Hyun-mo
Yang Kyung-mo
Seo Hyun-jin

2013White Dog
(Samsung Galaxy S4)
singer of theme song
Cristina Fernandez Lee
Moon Mason
Ku Hye-sun


20097th Asiana International Short Film FestivalSeo Hyun-jin
201113th International Women's Film Festival in SeoulKu Hye-sun
201314th Persons with Disabilities Film FestivalKu Hye-sun
201410th Jecheon International Music & Film FestivalKu Hye-sun
Seong Seung-han
Choi In-young



2009BreathYG Entertainmentsinger, composer
2015Breath 2singer, composer


2005"Happy Birthday To You"Nonstop 5 OSTEMIsinger
2006"Sarang Ga (Love Story)"Pure in Heart OSTYG Entertainmentsinger
2010"Brown Hair"singer, composer
2012"Fly Again"Take Care of Us, Captain OSTPony Canyoncomposer
"Marry Me"YG Entertainmentsinger, composer
2013"Flying Galaxy"singer, composer
"It's You"singer, composer
"Happy"singer, composer
2014"Floral Rain"singer, composer
"Must"singer, composer
2015"A Day Without Sound"singer
2016"Written and Erased"collaboration with The Blind


2009With YouKu Hye Sun participated in Isao Sasaki's concert
Over the RainbowKu Hye Sun, Isao Sasaki
2015Summer, Autumn, Winter, and SpringKu Hye Sun, Choi In-young

Other works

Books and exhibitions

2010Ku Hye-sun's The Story Behind the Making of "Magic"Non-fiction
2012The Peach TreeNovelization

Fashion shows

Goodwill ambassador

  • 2012 International 3D Festival
  • 2013 Cheongju International Craft Biennale
  • 2013 Artistree
  • 2013 the 14th Persons with Disabilities Film Festival
  • 2015 Honorary ambassador for Seoul 2015 International Blind Sports Association (IBSA) World Games
  • 2015 Honorary ambassador Korean Leukemia Association

Awards and nominations

YearAwardCategoryNominated workResult
2006KBS Drama AwardsBest New ActressPure in HeartWon
200743rd Baeksang Arts AwardsBest New Actress (TV)Nominated
SBS Drama AwardsNew Star AwardThe King and IWon
200926th Pusan Asian Short Film FestivalAudience AwardThe MadonnaWon
4th Andre Kim Best Star AwardsBest Female StarBoys Over FlowersWon
6th Yahoo! Taiwan Asia Buzz AwardsBest Asian ActressWon
KBS Drama AwardsExcellence Award, Actress in a Mid-length DramaWon
Netizen Award, ActressWon
Best Couple Award with Lee Min-hoWon
14th Asian Television AwardsBest Drama ActressNominated
3rd Mnet 20's Choice AwardsHOT Drama Star (Female)Nominated
201012th Short Shorts Film Festival & AsiaSpotlight AwardThe MadonnaWon
23rd Tokyo International Film FestivalBest Asian-Middle Eastern FilmMagicNominated
20115th Mnet 20's Choice AwardsHot 20's VoiceN/ANominated
201231st Brussels International Fantastic Film FestivalOrbit CompetitionThe Peach TreeNominated
SBS Drama AwardsTop Excellence Award, Actress in a Drama SpecialTake Care of Us, CaptainNominated
2012 Korea Fulfillment AwardsGrand Prize (Daesang)HerselfWon
14th Annual Republic of Korea Design Award by Ministry of Knowledge EconomyDesign Merits Division-Minister Commendation AwardHerselfWon
2013Ministry of Health and Welfare2nd Happiness Sharing Talent AwardHerselfWon
2014Ministry of Gender Equality and FamilyGrand Prize in Gender EqualityHerselfWon
2014 SBS Drama AwardsExcellence Award, Actress in a Drama SpecialAngel EyesNominated
Best Couple Award with Lee Sang-yoonNominated
2014 Asian Drama Awards PilipinasBest Actress of the Year 2014Won
Best Couple Award with Lee Sang-yoonNominated
The 6th Seoul Senior Film FestivalBest Young DirectorN/AWon
2015KBS Drama AwardsExcellence Award, Actress in a Mid-length DramaBloodNominated
Best Couple with Ahn Jae-hyunNominated
2015 Asian Drama Award PilipinasBest Actress 2015Angel EyesWon