Co-Ed's female sub-unit group, 5dolls, has finally released their debut MV teaser through Mnet and GomTV! Their title track, "Lip Stains," was produced by�Brave Brothers, and it features a strong drum beat with an addictive synth sound.�The music video was also directed by the famous CF director behind the "Anymotion" series, Cha Eun Taek. Member Chanmi and newest addition Seo Eun Gyo will also be surprising fans with a new image by engaging in a dance battle against Jay Park. The girls will be returning with the digital release of one of their tracks on February 9th, followed by their official comeback on the 17th. Stay tuned to allkpop for further updates on this exciting new unit! [gallery] Source: EGN Tip: jejof999d