Berry Good's first ever unit Heart Heart is sophisticated in their first group teaser image.

In addition to a chic, black and white unit image, Heart Heart finished up their first concept teaser set with final member Gowoon.�The unit's debut single "A big mess, a big mess has happened" (literal translation) will be out on April 27 at 6PM KST, so be on the lookout for more of Heart Heart's teasers, coming soon.�

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