Question: What South Korean entertainment company released the song "Blood Sweat & Tears" by South Korean boy group BTS?

Context paragraphs:
NCT discography: The discography of the South Korean boy group NCT consists of four extended plays and eight singles. NCT was formed by the Korean entertainment company S.M. Entertainment in 2016.

V (entertainer): Kim Tae-hyung (Hangul: 김태형 ; born on December 30, 1995), better known by the stage name V, is a South Korean singer, songwriter and actor.  He is a member of the South Korean boy group BTS.

BtoB discography: This is the discography of South Korean boy group BtoB.  The group was formed by Korean entertainment company Cube Entertainment in 2012, and consists of seven members.  The group first major release, the EP "Born to Beat", was released on March 21, 2012.

Blood Sweat &amp; Tears (song): "Blood Sweat & Tears" is a single by South Korean boy group BTS.  The single was released by Big Hit on October 10, 2016 in South Korea, while the Japanese single was released on May 10, 2017 under Universal Music Japan and Virgin Music-Def Jam Recordings with two B-side songs, the Japanese version of "Not Today" and "Spring Day".

Big Hit Entertainment: Big Hit Entertainment (Hangul: 빅히트엔터테인먼트 ) is a South Korean entertainment company established in 2005 by Bang Si-hyuk.  It currently manages the musical duo Homme and idol group BTS.

Wings (BTS album): Wings is the fourth studio album by South Korean boy band, BTS.  The album was released on October 10, 2016 and also available in four versions of physical album.  It contains fifteen tracks with "Blood Sweat & Tears" as the lead single and seven solo tracks by each member of BTS.  The album is heavily influenced by Hermann Hesse's bildungsroman, "Demian".  The album was reissued under the title You Never Walk Alone and was released on February 13, 2017 as an extension of the standard release.  The reissue album is also available in two versions of physical album.  It contains eighteen tracks in total including four new tracks with "Spring Day" and "Not Today" as the lead singles.  Overall, sales from both albums has exceeded 1.5 million physical copies worldwide with one million copies sold in Korea, officially earning BTS the title, 'Million Sellers'.

BTS discography: The following is the discography of South Korean boy group BTS.  The group debuted in South Korea on June 2013 with single album, "2 Cool 4 Skool", at number 5 on South Korean Week 31 Gaon Weekly Chart.  They made a comeback on September 2013 with an extended play, "O!RUL8,2? ", which peaked at number 4 on Week 38 Gaon Weekly Chart.  BTS then released their second extended play, "Skool Luv Affair", in February 2014, where it charted at number 1 on Week 18 Gaon Weekly Chart.  This also marked the first time their album charted on international charts, Billboard World Albums and Japan's Oricon Chart, specifically.  A repackaged version of the album, "Skool Luv Affair Special Addition" which was released in May 2014, also peaked at number 1 on Week 21 Gaon Weekly Chart.

Love Yourself: Her: Love Yourself: 承 'Her' is the fifth extended play by South Korean boy group BTS.  The EP was released on September 18, 2017 by Big Hit Entertainment.  The album was released in four versions, and contains nine tracks with "DNA" as its lead single.  In addition, there are two hidden tracks that are only available on the physical album.

Dark &amp; Wild: Dark&Wild is the first studio album by South Korean boy group BTS.  This album was released on August 19, 2014.  It contains fourteen tracks, with "Danger" as the title track.  The group later promoted "War of Hormone", another track from the album.

Rap Monster: Kim Nam-joon (Hangul: 김남준 ; born September 12, 1994), better known as Rap Monster, is a South Korean rapper, songwriter, and record producer.  He is the main rapper and songwriter of the South Korean boy group BTS, managed under Big Hit Entertainment.  In 2015, he released his first solo mixtape, "RM".  To date, he has recorded with artists such as Wale, Warren G, Gaeko, Krizz Kaliko, MFBTY, and Primary.

Supporting paragraphs: Blood Sweat &amp; Tears (song) Big Hit Entertainment
Answer: Big Hit Entertainment