He was in produce 101, he was not in Wanna One and then at the request of the fans JBJ was formed (Hyunbin, Kenta, Longguo, Taehyun, Sanggyun). I loved that group but also like WO, it was not going to be permanent. Later he was a soloist, I listened to his music a lot, he was one of my favorite soloists and finally they put him in the Wei group that Yohan is in (X1).
I honestly don't know how the group is doing, but I'm sure the company thought that if they had Donghan and Yohan in a group, they would do very well.
I've been waiting for music from him as a soloist for a long time.