 Speculations of the album's repackage began circulating around social media websites in late January 2014, and the rumors claimed that the repackage would be released on February 17.On February 18, member Max Changmin confirmed that they were preparing for a new single.TVXQ officially announced the repackage of "Tense" on February 20, 2014, and that "Spellbound" would be serviced as the repackage's lead single.