'BooSeokSoon' is coming!

On Thursday, Seventeen's official Twitter account posted a photo hinting at the group's first sub-unit BSS or BooSeokSoon' comeback.

pic.twitter.com/bjDrB7DWt1

— 세븐틴(SEVENTEEN) (@pledis_17) January 6, 2023

The photo indicated 'They call us, BSS', coined from the famous introduction of their debut release 'Just Do It' last March 2018.

The special unit consists of members Seungkwan, DK, and Hoshi.