The group released their first studio album entitled "XOXO" in June 2013 with two versions, Korean edition "Kiss" and the "Hug" mandarin. A difference to the era of "Mama", EXO-K and EXO-M did their promotions in separate, however, with "XOXO" had their promotions jointly; mainly in South Korea. EXO recorded the single main "Wolf" but the rest of the songs they recorded them separately. The two versions collectively ranked number 1 in Billboard World Albums Chart a week after its release.