The group released their debut studio album Welcome Back (2015), which debuted atop the South Korean Gaon Album Chart and produced the number-one singles "My Type", "Apology" and "Dumb & Dumber" and three top-ten singles: "Rhythm Ta", "Airplane" and "Anthem". The album was commercially a success, selling 260,000 copies in Asia, and the songs sold 4.8 million copies, which lead the group to win several best new artist awards on major Asia award shows, including Mnet Asian Music Awards, Japan Record Awards and QQ Music Awards. The following two years, the group released the singles "#WIDE" and "New Kids: Begin", and they focused on their first Asia tour and several Japanese tours. The group's second studio album, Return, was released on January 25, 2018.