Exo-SC (Korean: 세훈&찬열; RR: Sehun & Chanyeol;[1] stylized in all caps) is a South Korean hip hop duo and the second sub-unit of South Korean-Chinese boy band Exo, consisting of Chanyeol and Sehun.

[3] Chanyeol and Sehun debuted as Exo's second sub-unit and first duo in July.

[5] On the same day, it was announced that the unit will release their first extended play titled What a Life on July 22, which contains six tracks.

[7] On June 12, Cass Fresh, a notable beer in South Korea, announced that Exo-SC became their brand endorser.

[8] On June 23, it was announced that the unit will release their first full album 1 Billion Views on July 13, which contains nine tracks.