During a broadcast on July 20, Baekhyun confirmed that the group would release a reissue of the album. He added: "Ko Ko Bop is exactly what it is, an eve or a pre-sequel. The title of our new album is The War. You can see us taking advantage of the night before we start the fight, to go to the real war. At that moment, that is the tip of the iceberg. When we hear about the concept, we think: that is the S.M. for you. His planning exploded my mind."