On August 3rd, the Brave Girls revealed unreleased still-cuts from their comeback album, "Back to da Future". Dressed in form-fitting outfits, the concept of the shoot was to embody the word, 'luminous'. Utilizing glamorous lighting and sexy shadows, the girls exude an aura of mystery that's captivated netizens. Netizens said, "I didn't think this would work, but it looks awesome", "Sexy Yejin, confident Eunyoung, chic Hyeran, lovely Seo Ah, and cutie Yujin", and "They're 'easily' good at looking sexy". Brave Entertainment stated, "We would like to thank everyone for the attention they've been showing Brave Girls.  You can check for more information on their official homepage and Twitter." [gallery] Source + Photos: Newsen via Nate