BSS (, also known as BooSeokSoon or Seventeen BSS) is the first sub-unit of South Korean boy band Seventeen. Formed in 2018, the group is composed of three Seventeen members: DK, Hoshi and Seungkwan. Career 2018–present: Debut with "Just Do It" and first comeback On February 2, 2018, BSS performed the song "Just Do It" for the first time at Seventeen's 2018 Seventeen 2nd Fan Meeting. Later, the band debuted as a sub-unit of Seventeen with the release of their first digital single "Just Do It" on March 21, 2018. On January 7, 2023, it was announced that BSS would be making their first-ever comeback, almost five years after their debut. The band released their first single album Second Wind on February 6, 2023. On February 15, 2023, BSS received their first ever music show win on MBC M's Show Champion with "Fighting" featuring Lee Young-ji, followed by wins on M Countdown, Music Bank, Show! Music Core and Inkigayo. Members DK – leader Hoshi Seungkwan Discography Single albums Singles Other charted song Awards and nominations References K-pop music groups Musical groups established in 2018 South Korean boy bands South Korean dance music groups Pledis Entertainment artists Hybe Corporation artists South Korean idol groups South Korean pop music groups Seventeen (South Korean band) South Korean musical trios 2018 establishments in South Korea