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UNB reveal their hidden 'Black Heart' in comeback concept trailer feat. Jungha, Hangyeol, Jooeun, & Anne!

TheUNBmembers will be reuniting with some of their old 'The Unit' contestants for their comeback with "Black Heart"!

Previously when UNB released a comeback teaser poster, many believed that there would be a collaboration between UNB andUni.T; however, it turns out the female featuring members of UNB's "Black Heart" will beJooeunandAnne

Anne is a former female contestant from 'The Unit' alongside UNB, while Jooeun is a member ofDIA. In addition, UNB's "Black Heart" also features two former male 'The Unit' contestants - JunghaandHangyeol. The group's comeback teaser gives a taste of UNB's new jack swing genre title track "Black Heart", but wait, there's more! The boys have also revealed a slew of jacket photo cuts to check out. 

UNB's comeback is set for June 2. Can't wait for more!