On August 21, 2017, S.M. Entertainment, confirmed that EXO planned to make their comeback with a repackage album for "The War" in early September. S.M. Entertainment began to release teasers of the reissue of the album with the message "The Power of Music". The first teaser titled #Total_Eclipse was released on August 21, 2017 at the same time as the solar eclipse of August 21, 2017. The second teaser was released on August 28 entitled "Parallel_Universe."