BE:FIRST - 'Mainstream' MV | REACTION

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

[REACTION] BE:FIRST - 'Mainstream' (MV + Dance Practice) | This is exciting.

XG - AWE Album REACTION

ZorDon Reacts to "BE:FIRST / Masterplan -Dance Practice-" | Fandom Fridays

BE:FIRST X ATEEZ - REACCION A "HUSH - HUSH" ( MADRE MÍA QUE GOZADA!)

FIRST TIME REACTING TO BE:FIRST - Mainstream MV | REACTION

KPOP RANDOM DANCE (Boy Group edition) || ICONICS

NON K-POP FANS REACT TO ATEEZ X BE:FIRST - 'HUSH HUSH' OFFICIAL MV!

DANCER REACTS TO BE:FIRST / Masterplan -Music Video- & Dance Performance Video

[ES] BE:FIRST / Mainstream -Music Video- REACTION

Dreamcatcher(드림캐쳐) 'Summer Holidays' Special Mini Album REACTION

FIRST TIME REACTING TO BE:FIRST - 'Mainstream' | -Music Video-

BE:FIRST - Masterplan MV - REACTION

BE:FIRST Mainstream MV Reaction (JP Sub)

BE:FIRST X ATEEZ / Hush-Hush -Music Video- | REACTION

BE:FIRSTを知らないただのマッチョが初めて【BE:FIRST-Bye-Good-Bye THE FIRST TAKE】を見たリアクション

BE:FIRST / Mainstream Music Video FIRST TIME REACTION【海外の反応】[MUSICIAN REACTS]

BE:FIRST / Boom Boom Back -Music Video-

BE:FIRST / Masterplan -Music Video- REACTION | THE SONG AND CHOREO IS FIRE! 🔥

【衝撃】え、こんなに凄いの？！想像を超えるJUNON (BE:FIRST)の衝撃作！！Nova Flame -Special Dance Performance-【歌声分析】Reaction