"Warrior" (Korean: 워리어) is a song recorded by South Korean boy group B.A.P.
 It is released as a digital single on January 26, 2012 through TS Entertainment.
 The song served as B.A.P's debut single, the first from their self-titled debut album.
 "Warrior" was written and produced by Kang Ji-on and Kim Ki-bum, the same producers of Song Ji-eun's Going Crazy and Bang & Zelo's "Never Give Up".
 B.A.P's leader, Bang Yong-guk also participated in the song's production by co-writing "Warrior".
 The song's lyrics describes the injustice of the current society and how the protagonist's desire to end it.
B.A.P (Korean: 비에이피; an acronym for Best Absolute Perfect) is a South Korean boy group formed in 2012 under TS Entertainment.
 The group's six members are Yongguk, Himchan, Daehyun, Youngjae, Jongup, and Zelo.
Choi Jun-hong (Hangul: 최준홍; born October 15, 1996) better known by his stage name Zelo, is a South Korean rapper, dancer, singer and beatboxer.
 He is best known as a member of the South Korean boy group B.A.P.
 He made his recording debut with the single "Never Give Up" under B.A.P's sub-unit Bang&Zelo in November 2011.
 He is currently signed under TS Entertainment.
Badman is the third extended play by South Korean boy group B.A.P.
 It was released on August 6, 2013 under the record label of TS Entertainment and distributing label of LOEN Entertainment.
 It charted number 1 on the "Billboard" World album Charts.
Blue is an EP by the South Korean boy group B.A.P.
 It was released on September 5, 2017 by TS Entertainment and distributed by LOEN Entertainment.
Bang Yong-guk (born March 31, 1990), better known mononymously as Yongguk, is a South Korean rapper, songwriter and record producer.
 He is best known as the leader of the South Korean boy group B.A.P under TS Entertainment.
Matrix is the fourth extended play by South Korean boy group B.A.P.
 It was released on November 16, 2015 by TS Entertainment and distributed by LOEN Entertainment.
 It features the lead single "Young, Wild & Free".
 It peaked at #3 on the Gaon charts.
Noir is the second studio album by the South Korean boy group B.A.P.
 It was released on November 7, 2016 under the label of TS Entertainment.
 "Skydive" was used as the lead single.
Carnival is the fifth extended play by the South Korean boy group B.A.P.
 It was released on February 22, 2016 by TS Entertainment and distributed by LOEN Entertainment.
 It features the lead single "Feel So Good".
 It peaked at #2 on the Gaon Music Chart.
One Shot is the second EP by South Korean boy group B.A.P.
 It was released digitally on February 12, 2013 in the United States and on certain websites in Korea (such as Melon Player), under the label of TS Entertainment.
 The album features the single "빗소리 (Rain Sound)".
 The EP rose to number 1 spot on the Billboard World Albums Chart.

Question:  A South Korean boy group formed in 2012 under TS Entertainment released what EP on September 5th, 2017?
Answer: Blue