BE:FIRST - Boom Boom Back + Smile Again + Mainstream + MasterPlan Music Video (Reaction)

BE:FIRST - Bye-Good-Bye And Smile Again / THE FIRST TAKE (REACTION)

HOLD UP 😯😄| @BEFIRSTOfficial - Scream, Boom Boom Back, Mainstream, Masterplan Dance Performance

BMSG EAST - The Sun from the EAST + BMSG WEST - The Moon in the WEST + BMSG FES 23 Mashup (REACTION)

BE:FIRST / Mainstream & Masterplan -Music Video- | REACTION

BE:FIRST / Boom Boom Back -Music Video- | K-Cord Girls Reaction

4 HITS! - Blackswan - Roll Up Reaction (MV & EP)

BE:FIRST Mainstream + Grow Up LIVE in DOME 2024 Reaction

BE:FIRST REACTION!! | 'Boom Boom Back', 'Mainstream', & 'Masterplan' Dance Performances

BE:FIRST - Betrayal Game + Scream + Message Music Video || First Time Reaction

The collab I needed - BE:FIRST X ATEEZ / Hush-Hush -Music Video - REACTION

Them Dance Moves!? 😯😏 | BE:FIRST / Boom Boom Back + Scream -Music Video- @BEFIRSTOfficial Reaction

REACTION to BE:FIRST - 'Shining One' + 'Gifted' + 'Gifted' Orchestra Ver. + 'Grow up'

REACTION TO BE:FIRST - First Live Performance in USA (ATEEZ LA DAY 1 072024) | FIRST TIME WATCHING

Reaction to a BE:FIRST 'GIFTED' MARATHON | Are you ready???

[REACTION] BE:FIRST - Smile Again / THE FIRST TAKE

REACTION to BE:FIRST - 'Salvia' + 'Move On' + 'Bye-Good-Bye'

ATEEZ ARE BACK! | BE:FIRST X ATEEZ - 'Hush-Hush' -Music Video- REACTION

BE:FIRST / Scream + Betrayal Game -Music Video- | K-Cord Girls Reaction

BE:FIRST REACTION!! | 'Smile Again', 'Blissful', & 'Guilty' Dance Performances

BE:FIRST - Shining One + Gifted + Bye-Good-Bye Music Video || First Time Reaction