BY9 Member Profile BY9 (Be Your 9) is a project group fans are trying to form. BY9 includes: Lee Jinhyuk, Lee Sejin, Song Yuvin, Koo Jungmo, Hwang Yunseong, Kim Minkyu, Ham Wonjin, Tony and Keum Donghyun. BY9 are trainees that ranked top 20 yet, didn’t debut. They did not end up debuting. JinHyuk Stage Name: … Continue reading BY9 Member Profile