BTS is the K-pop group that debuted in 2013 and is widely described as the only group from that debut year to remain active and promoting together. The seven-member group made its official debut on June 13, 2013, under Big Hit Entertainment with the single album 2 Cool 4 Skool.
Originally called Bangtan Sonyeondan, BTS built its early identity around hip-hop, youth issues, and self-written material. Members RM, Jin, Suga, j-hope, Jimin, V, and Jung Kook later expanded into pop, R&B, dance, and English-language releases.
The group’s breakthrough grew through albums such as The Most Beautiful Moment in Life and Wings. In 2017, “DNA” became BTS’ first Billboard Hot 100 entry, while “Dynamite” reached No. 1 in 2020 and helped introduce the group to an even broader global audience.
The wording refers to groups that debuted in 2013 and stayed together as active groups; it does not mean BTS was the only K-pop act to debut that year.