Tomorrow x Together are speaking up for a cause close to their hearts. The K-pop stars have partnered with UNICEF for a new campaign, “Together for Tomorrow,” focused on empathy, erasing stigma and having open conversations around mental health. They had one such conversation with PEOPLE backstage at the final U.S. show of their ACT:TOMORROW world tour at the Prudential Center in Newark, N.J. on Thursday, Oct. 2.