Jang Hyun Seung finishes his solo promotion, ‘Ma First’ Goodbye Stage [M COUNTDOWN]

M COUNTDOWN｜ 모든걸 다 보여주고 떠난다! 짧고 굵은 솔로 활동 끝! ’니가 처음이야’ 굿바이 무대 Jang Hyunseung - Ma First World NO.1 KPOP Chart Show M COUNTDOWN Every Thur 6P...