Question: Which Korean artist is younger: Moon Hee-joon or Bada?
Context: Moon Hee-joon (; or spelled Moon Hee-jun; born March 14, 1978) is a South Korean pop-rock singer-songwriter signed under SidusHQ.  He initially rose to fame as the leader of former boy band H.O.T. under SM Entertainment. Opera is the third official Japanese single of South Korean boy band Super Junior, released on 9 May 2012 by Avex Trax.  It was originally released in Korean as part of their fifth Korean studio album, "Mr. Simple" on 3 August 2011.  This single set a new record as the most singles sold by a Korean artist in a week. "Purple Line" is Tohoshinki's 16th Japanese single, written by the Korean composer who made Tohoshinki's biggest hits in Korea such as "Rising Sun" and ""O"-Jung.Ban.Hap. " It became Tohoshinki's first Japanese single to reach #1 on the Oricon Weekly sales chart in Japan, making the group the first foreign male group or boyband to top the Japanese charts and second Korean artist after BoA to do so.  "Purple Line" was Tohoshinki's first single that was originally released in Japanese and later released in Korean as a single.  According to the members, the name "Purple Line" refers to the thin rays of light on horizon when the sun sets.  Despite being the first #1 single from Tohoshinki, it is not their strongest single in terms of physical sales, with "Break Out! " having the biggest lead in Japan.  It was released a week before their third Japanese album " T" which included the song in its tracks. Bada (stylized as bada; Korean: 바다 ) is a discontinued operating system for mobile devices (in favour of Tizen) such as smartphones and tablet computers.  It was developed by Samsung Electronics.  Its name is derived from "바다 (bada)", meaning "ocean" or "sea" in Korean.  It ranges from mid- to high-end smartphones. "Dazzling Girl" is the fifth Japanese single of South Korean boy group, Shinee, released on October 10, 2012.  This is their first original Japanese single after their previous singles having been remakes of their Korean singles.  Shinee ranked as the top-selling Korean artist in Japan for October with "Dazzling Girl".  Selling over 109,032 copies in a month, "Dazzling Girl" was certified gold by the Recording Industry Association of Japan (RIAJ) for shipments of over 100,000. 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. 100 People, 100 Songs () was a 2014 South Korean singing competition program presented by Kim Sung-joo, Jang Yun-jeong and Moon Hee-joon.  It aired on JTBC from October 31, 2014 to September 27, 2015. Choi Byung Hoon (최병훈) (born 1952 in Kangwondo, South Korea) is a South Korean artist.  He is considered by many to be the father of Contemporary Korean Design.  Choi graduated from the Hong-ik University with a degree in applied fine arts in 1974, a few years later he completed his masters of fine arts from Hong-ik.  Since his graduation, Choi has become well known for his work in modernizing the traditions of Korean design.  Choi gathers inspiration from Mayan, Incan, African and Indian cultures. The Act III: M.O.T.T.E 'Moment of Truth The End' World Tour (referred to as Act III: M.O.T.T.E) is the second world tour by South Korean rapper and singer-songwriter G-Dragon.  It was in support of his self-titled EP "Kwon Ji Yong" (2017).  The tour started on June 10, 2017 in Seoul.  Act III represents the beginning of the third decade of his life while 'M. O.T.T.E' (Hangul: 모태 ; Hanja: 母胎 ; RR: "motae " ) meaning "mother's womb" in Korean, or "from birth", also serves as an acronym for 'Moment Of Truth The End'.  The tour is the largest tour by a Korean artist in the United States and Europe, and is the largest concert tour ever conducted by a Korean solo artist. Exo (Korean: 엑소 ; stylized as EXO) is a South Korean-Chinese boy group based in Seoul.  Formed by S.M. Entertainment in 2011, the group debuted in 2012 with twelve members separated into two subgroups, Exo-K (Suho, Baekhyun, Chanyeol, D.O., Kai, and Sehun) and Exo-M (Xiumin, Lay, Chen and former members Kris, Luhan and Tao ), performing music in Korean and Mandarin respectively.  Exo's first album "XOXO" (2013), which contained the breakthrough hit "Growl", was a critical and commercial success, winning both Disk Daesang at the 28th Golden Disk Awards and Album of the Year at the 15th Mnet Asian Music Awards.  It sold over one million copies, making Exo the best-selling Korean artist in twelve years.  Subsequent albums and EPs continued with strong sales, and Exo were ranked the most influential celebrity by "Forbes" Korea Power Celebrity for the years 2014 and 2015.  They have been named "the biggest boyband in the world" by media outlets.
Answer: Bada