Question: Splendid Politics, is a 2015 South Korean television series, stars included in the film is which  South Korean actor and singer, who is a member of which group ?

Context paragraphs:
Spy (2015 TV series): Spy (, stylized as SPY) is a 2015 South Korean television series based on the Israeli drama "The Gordin Cell" but modified to depict North/South Korean relations.  A family drama with spy thriller elements, it starred Kim Jae-joong as a genius analyst working for the National Intelligence Service (NIS), while Bae Jong-ok played his mother, an ex-spy from North Korea.

Sweet, Savage Family: Sweet, Savage Family () is a 2015 South Korean television series starring Jung Joon-ho, Moon Jung-hee, Jung Woong-in and Yoo Sun.  It aired on MBC on Wednesdays and Thursdays at 22:00 beginning November 18, 2015.  The series is loosely based on the "Marrying the Mafia" film franchise, which also starred Jung Joon-ho.

Kim Ki-bum: Kim Ki-bum (born August 21, 1987) is a South Korean actor and singer.  He was a member of the South Korean boy band Super Junior.  After the release of Super Junior's third studio album "Sorry, Sorry" in 2009, Kim announced his leave from the group to pursue his acting career.  In 2015, Kim announced he ended his contract with S.M. Entertainment and departure from the group.  Kim made his television debut in the Korean television drama, "April Kiss", in 2004.

Splendid Politics: Splendid Politics () is a 2015 South Korean television series starring Cha Seung-won, Lee Yeon-hee, Kim Jaewon, Seo Kang-joon, Han Joo-wan and Jo Sung-ha.  It aired on MBC from April 13 to September 29, 2015 on Mondays and Tuesdays at 22:00 for 50 episodes.

My Unfortunate Boyfriend: My Unfortunate Boyfriend () is a 2015 South Korean television series starring Yang Jin-sung, No Min-woo, Yoon Hak and Han Hye-rin.  It aired on MBC Dramanet on Fridays and Saturdays at 20:00 for 16 episodes from April 10, 2015 to May 30, 2015.

Lee Hyun-jae (actor): Lee Hyun-jae (Korean: 이현재 , born April 12, 1988) is a South Korean actor and drummer.  He made his acting debut in South Korean television drama "High Kick Through the Roof" (2009).  He featured in the commercially successful Chinese films, "Tiny Times 3" (2014) and "Tiny Times 4" (2015), and helped him achieved general recognition in China.

Cheer Up! (TV series): Cheer Up!  (; lit. "  Sassy, Go Go") is a 2015 South Korean television series starring Jung Eun-ji, Lee Won-keun, Cha Hak-yeon, Ji Soo and Chae Soo-bin.  It aired from October 5, 2015 until November 10, 2015 on KBS2 every Monday and Tuesday at 22:00 KST for 12 episodes.

Glamorous Temptation: Glamorous Temptation () is a 2015 South Korean television series starring Joo Sang-wook, Choi Kang-hee, and Cha Ye-ryun.  It replaced "Splendid Politics" and aired on MBC on Mondays and Tuesdays at 22:00 (KST) for 50 episodes from October 5, 2015 to March 22, 2016.

Seo Kang-joon: Seo Kang-joon (born Lee Seung-hwan on October 12, 1993) is a South Korean actor and singer who is a member of the group 5urprise.  He gained recognition with his role in the television series "Cheese in the Trap" (2016) and has since starred in "Entourage" (2016), and will headline KBS2's "Are You Human Too? " (2017).

Sunmin: 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.

Supporting paragraphs: Splendid Politics Seo Kang-joon
Answer: 5urprise