IOI's first sub-unit has given us another hint of their upcoming debut with a new teaser image!

Jeon So Mi, Lim Na Young, Kim Do Yeon, and Pinky look fierce and confident, posing together in sleek, black outfits. The girls will be returning as 7-members for a new single titled "Whatta Man (Good Man)". 

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These girls are more than ready for their sexy debut on August 9, don't you agree?