Question: What is the name of the South Korean actor who is well known for his role in the 2016 South Korean television series W and starred alongside Han Hyo-joo?

Context articles: W (TV series)
Baik (director)
Brilliant Legacy
Golden Slumber
Love, Lies (2016 film)
Like Land and Sky
Dong Yi (TV series)
Spring Waltz
Lee Jong-suk
Han Hyo-joo

W () is a 2016 South Korean television series, starring Lee Jong-suk and Han Hyo-joo.
 It aired on Wednesdays and Thursdays at 22:00 (KST) on MBC from July 20 to September 14, 2016.
Baek Jong-yul (born 1970), known as Baik, is a South Korean film director.
 Baik worked as a visual artist and advertisement director before entering the film industry.
 His feature debut - a romantic comedy film "The Beauty Inside" (2015), deals with the love between a man who becomes a different person every day and a girl (played by Han Hyo-joo), who loves him.
 Baik said that there were definitely challenges to create a film with so many different actors playing the same character as each actor came to the set with his or her own interpretation of the character.
 His effort won him the Best New Director at the 52nd Grand Bell Awards in 2015.
Brilliant Legacy (; also known as Shining Inheritance) is a 2009 South Korean television series starring Han Hyo-joo, Lee Seung-gi, Bae Soo-bin and Moon Chae-won.
 It aired on SBS from April 25 to July 26, 2009 on Saturdays and Sundays at 21:45 for 28 episodes.
Golden Slumber is an upcoming South Korean thriller film directed by Noh Dong-seok, starring Gang Dong-won and Han Hyo-joo.
 It is based on the 2007 Japanese novel of the same name written by Kōtarō Isaka.
Love, Lies () is 2016 South Korean period drama film directed by Park Heung-sik, reuniting "The Beauty Inside" co-stars Han Hyo-joo, Chun Woo-hee and Yoo Yeon-seok.
 The story takes place in 1943, during the Imperial Japanese occupation of Korea.
 In the film, best friends Jung So-yul (Han Hyo-joo) and Seo Yeon-hee (Chun Woo-hee) are two of the last remaining "gisaeng".
 Although they enjoy pop music, they are committed to singing "jeongga", or classical Korean songs.
 So-yul's life falls apart when her lover, pop music producer Kim Yoon-woo (Yoo Yeon-seok), falls in love with Yeon-hee and helps her debut as a pop singer.
 The story follows So-yul's downward spiral as she is consumed by uncontrollable jealousy.
Like Land And Sky (; also known as As Much as Heaven and Earth) is a 2007 South Korean television series starring Park Hae-jin, Han Hyo-joo, Lee Joo-hyun, Kang Jung-hwa, and Hong Soo-ah.
 It aired on KBS1 from January 15 to August 31, 2007 on Mondays to Fridays at 20:25 for 165 episodes.
Dong Yi () is a 2010 South Korean historical television drama series, starring Han Hyo-joo in the title role.
 About the love story between King Sukjong and Choi Suk-bin, it aired on MBC from 22 March to 12 October 2010 on Mondays and Tuesdays at 21:55 for 60 episodes.
Spring Waltz () is a 2006 South Korean television series starring Seo Do-young, Han Hyo-joo, Daniel Henney, and Lee So-yeon.
 It aired on KBS2 from March 6 to May 16, 2006 on Mondays and Tuesdays at 21:55 for 20 episodes.
Lee Jong-suk (Hangul: 이종석, born 14 September 1989) is a South Korean actor and model.
 He debuted in 2005 as a runway model, becoming the youngest male model ever to participate in Seoul Fashion Week.
 Lee's breakout role was in "School 2013" (2012) and he is also well known for his roles in "I Can Hear Your Voice" (2013), "Doctor Stranger" (2014), "Pinocchio" (2014) and "W" (2016).
Han Hyo-joo (born February 22, 1987) is a South Korean film and television actress.
 She is best known for her leading roles in television drama series: "Brilliant Legacy" (2009); "Dong Yi" (2010) and "W - Two Worlds" (2016); as well as the film "Cold Eyes" (2013), for which she won Best Actress at the 34th Blue Dragon Film Awards.