JBJ (Hangul: 제이비제이), also known as Just Be Joyful, was a South Korean project boy group under Fave Entertainment, consisting of six members who previously participated in the 2017 reality show Produce 101 Season 2. The members of the group were Taehyun, Kenta, Sanggyun, Longguo, Hyunbin and Donghan.
These are photos from concerts where JBJ played, so they may be of other bands that played the concert as well.