Question: The King in Love starred which South Korean singer and actress?
Context: The King in Love () is a South Korean historical drama directed by Kim Sang-hyeop with screenplay by Song Ji-na, Park Chan-kyung and No Sun-jae, based on the novel of the same name by Kim Yi-ryung.  It stars Im Si-wan, Im Yoon-ah and Hong Jong-hyun.  The pre-produced drama aired on MBC from July 17, 2017 to September 19, 2017 on Mondays and Tuesdays. Lim Jae-beom (Hangul: 임재범; born January 6, 1994) commonly known by his stage name JB (Hangul: 제이비), is a South Korean singer, songwriter and actor.  He is a member of South Korean boyband Got7, and part of the duo JJ Project.  JB made his small-screen debut through the drama series "Dream High 2" in 2012.  He has also starred in MBC's "When a Man Falls in Love" as Seo-Min Joon. Im Yoon-ah (Hangul: 임윤아 ; born May 30, 1990), better known by the mononym Yoona, is a South Korean singer and actress.  She debuted as a member of girl group Girls' Generation in August 2007, who went on to become one of the best-selling artists in South Korea and one of South Korea's most popular girl groups worldwide. Richard Abidin Breen (born 29 June 1979), better known as Abz Love, is an English rapper, singer, songwriter, DJ, producer and TV personality.  Love has sold over 20 million records as a member and the lead singer of Simon Cowell's boy band Five.  In 2003, Love released his debut solo album "Abstract Theory", which earned him a further three top ten hits.  After years out of the spotlight, Love returned to screens on ITV2's "The Big Reunion" in 2012.  In 2013 he appeared on "All Star Mr & Mrs" and became the runner-up for Channel 5's "Celebrity Big Brother 12".  In 2015, Love starred in BBC Two's documentary series "Country Strife: Abz on the Farm", followed by a Christmas special titled "Country Strife: Abz on the Christmas Farm".  In January 2016, Abz released his first solo single in over a decade, a comedy track called "Cockadoodledoo" with the hope of raising money for his farming project. Sunmin (Hangul: 선민, "Katakana": ソンミン, born August 4, 1987) is a South Korean singer who speaks and sings in Korean, Japanese, and English.  She debuted in 2006, with the single "Keep Holding You," a collaboration with the Japanese R&B singer Toshinobu Kubota.  Her career was initially focused on the Japanese market, but her work became focused in South Korea from 2009 to 2010.  She also contributed to original soundtracks of South Korean television series "Master of Study" and "Gloria (2010 TV series)".  In 2010 to 2011, she was in the main South Korean musical production of "Jekyll & Hyde" as Lucy.  In 2012 to 2013, she reprised her role as Lucy in the South Korean national tour.  In spring 2013, Sunmin played Josephine in the South Korean production of "Arsène Lupin", the musical. Han Sun-hwa (born October 6, 1990), is a South Korean singer and actress.  She is a former member of the South Korean girl group Secret.  She made her television debut in 2004 while participating in SBS's "Superstar Survival" as a finalist, and in 2009, she was a regular cast on a variety show called "Invincible Youth".  Aside from music, she also ventured into acting and made her debut in the 2010 drama, "More Charming By The Day".  She also acted in several dramas with supporting roles in "Ad Genius Lee Tae-baek", "God's Gift - 14 Days", and "Marriage, Not Dating".  In 2014 she finally starred as a lead actress on MBC's weekend drama "Rosy Lovers" as Baek Jang Mi co-starring with actor Lee Jang Woo.  CNN International Seoul listed Sunhwa as one of the nine rising "It" stars in Korean entertainment citing her as a "multi-tasking" artist.  Her portrayal of Kang Se-Ah in the 2014 TVN drama, "Marriage, Not Dating" earned her a nomination for "Best Youth Actress" at the 16th Seoul International Youth Film Festival.  In 2014, her portrayal of Jang-Mi from "Rosy Lovers" and Jenny from "God's Gift 14 Day"s won her two best new actress awards from MBC and SBS Drama Awards.  It was confirmed on September 26, 2016 that Sunhwa had not renewed her contract with TS Entertainment and will officially part ways in October.  On October 14, 2016 Sunhwa joined Huayi Brothers as an actress. Lee Ji-yeon (born February 18, 1984), better known by her stage name Lina is a South Korean singer and musical actress.  She debuted in 2002 as a member of South Korean R&B duo Isak N Jiyeon and disbanded in 2004.  She later re-debut as a member of South Korean girl group The Grace in 2005 and the group currently being inactive.  She currently active as a musical actress. Ji Hye-ran (born January 3, 1996), better known by her stage name Z.Hera, is a South Korean singer and actress.  Z.Hera appeared on the documentary program "Human Theater" in 2006 as Shaolin Girl when she was 11 years old.  She received attention after being the first South Korean singer to appear on the American social site BuzzFeed.  She is known for her roles in "Moorim School" (2016) and "" (2016). Kim Tae-yeon, better known by the mononym Taeyeon, is a South Korean singer.  Her discography consists of one studio album, two extended plays (EPs), twenty singles (including four as featured artist), and three promotional singles.  She debuted as a member of South Korean girl group Girls' Generation in August 2007 and initially gained some popularity as a singer upon recording soundtrack songs "If" for "Hong Gil Dong" and "Can You Hear Me" for "Beethoven Virus" (2008).  She subsequently established herself as one of the most renowned vocalist on the South Korean music scene with further soundtrack recordings, notably "I Love You" for "" (2010), "Missing You like Crazy" for "The King 2 Hearts", "Closer" for "To the Beautiful You" (2012), and "And One" for "That Winter, the Wind Blows" (2013), all of which managed to enter the top ten of South Korea's Gaon Digital Chart.  Apart from soundtrack recordings, Taeyeon has also recorded duets with other artists, most notably "Like a Star" with The One and "Different" with Kim Bum-soo, which peaked at numbers one and two on the Gaon Digital Chart, respectively. Choi Sung-hee (born February 28, 1980), better known as Bada or Sea, is a South Korean singer and musical actress.  She is a member of South Korean girl group S.E.S..  She has released four studio albums, one mini albums and five singles.  She won Best Actress at the 3rd The Musical Awards and has starred in ten musicals to date.
Answer: Im Yoon-ah