OMG!! BE:FIRST / Mainstream -Music Video - REACTION

OMG!! BE:FIRST / Masterplan -Music Video - REACTION

NO WAY!! BE:FIRST / Gifted. Orchestra ver. - REACTION

FIRST TIME HEARING!!! BE:FIRST - Mainstream (REACTION) | METALHEADS React

BE:FIRST / Mainstream -Music Video- REACTION!!!!

82MAJOR (82메이저) - Stuck (혀끝) - M/V REACTION

DANCE CHOREOGRAPHER REACTS - BE:FIRST / Mainstream -Dance Practice- + MV + Perf Version

British Guy Reacts to BE:FIRST "Guilty" | Special Dance Performance | REACTION!

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

*LOVE THEM* BE:FIRST / Blissful - Music Video - REACTION

Reacting to Be:First!! Omg!!

THEY DELIVERED! | BE:FIRST/ Mainstream -from BE:FIRST LIVE in DOME 2024 REACTION

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

SURPRISED ME!! BE:FIRST / Boom Boom Back Music Video - REACTION

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

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

BE:FIRST - First Live Performance in USA - ATEEZ LA DAY 1 072024

BE:FIRST ARE EATING CD´S FOR BREAKFAST (LIVE PERFORMANCE REACTION)

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

【BE:FIRST深掘り③】甘い声なのに苦しさ感じる歌詞に放心状態　BE:FIRST-Ballad Song Reaction

OMG!! BE:FIRST / Milli-Billi -Special Dance Performance - REACTION