 The album was released to commemorate and celebrate the eighth anniversary of the group's debut.This marks the third time the group has released two albums in one year, following "Shock of the New Era" and "Mastermind" in 2010; and "Good Luck" and "Time" in 2014.According to Gaon Chart, as of the end of December 2017, the album has sold a cumulative total of 113,154 copies.