Big Hit has introduced the first member of their new boy group TXT (Tomorrow X Together) with it's first member, Yeonjun! There will be a new member introduced every 72 hours. #TXT ( #투모로우바이투게더 ) - #연준 #YEONJUN #TOMORROW_X_TOGETHER pic.twitter.com/M3Lbv2tJ2x — BigHit Entertainment (@BigHitEnt)...