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

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

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

Reacting to Be:First!! Omg!!

Stray Kids "MOUNTAINS" Video | REACTION

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BE:FIRST - 'Mainstream' MV | REACTION

BE:FIRST "Masterplan" (Official Music Video) | Couples Reaction!

Reacting to Xdinary Heroes (엑스디너리 히어로즈)| Love And Fear MV | Trapped And Can't Get Out!!!

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

THIS IS HOW YOU COLLAB !!!!! | BE:FIRST X ATEEZ / Hush-Hush -Music Video- | Reaction

FIRE!! 🔥 BE:FIRST Mainstream MV + Dance Performance REACTION

ATEEZ(에이티즈) - GOLDEN HOUR : Part.2 ALBUM REACTION

BE:FIRST - Masterplan MV - REACTION

【BE:FIRST】【オタクシンガーリアクション】「Grow Up」セッションを初めて見てみたら良すぎて地面割れた｜BE:FIRST「Grow Up」Apartment Band ver.リアクション

FIRST TIME REACTING TO BE:FIRST / Mainstream -Music Video-

Xdinary Heroes〈LIVE and FALL〉Album | REACTION

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

First Reaction to BE FIRST Masterplan (Japanese Pop)

Stray Kids 『GIANT』 Music Video | REACTION