The EP was intended to be released on April 21, 2014 , but its release was postponed due to the sinking of Sewol on April 16. The album was later released on May 7, 2014. On May 15, 2014, the leader of EXO-M, Kris, filed a lawsuit against S.M. Entertainment to cancel his contract for the company's violation of human rights and unattended health.