"SuperStar"

What will happen if Idolish7, Trigger, Re:Vale and Zool was gathered in a single project together? Which among these groups would become superstars? Where will their fates would lead them to? . . . Hellouuu~ this is my first Fanfic~ This story takes place after the part 4 of the story Idolish7 so there's a lot of spo...