I think Tang Nhat Tue is having financial problems. After WHY was released, Zer09 went through 1 year hiatus before releasing JOKER, which flopped badly as well. His Usagi girl group was came together 2 years ago and still hasn't debuted. I doubt they will ever debut, other than being a live band. And Zer09 appearance on Soribada didn't help them grow their popularity at all. Knetizens called them a third world country group lol. It's racist as hell, I don't defend that, but it was kinda funny. I'm sure they won't disappear anytime soon, but the scandals hurt them more than they realized. I think some members will leave eventually when they find out at last this is just a waste of their talent and time. When that happens, TNT will probably drop his idol project once and for all.