BtoB Yook Sungjae 'long coat that no one can digest'

Mnet 'M Countdown' live broadcast pre-rehearsal was held at cj ENM Center in Sangam-dong, Mapo-gu, Seoul on the afternoon of November 15th.

On this day, BtoB (Jung Il-hoon Im Hyun-sik Yook Sungjae Peniel Shin Lee Min-hyuk Lee Chang-sub) attended.

About Lee Chang-sub

Lee Chang-sub, better known mononymously as Changsub, is a South Korean singer, songwriter, host and musical actor. He is a lead vocalist of the South Korean boy group, BtoB.  Wikipedia