Subunit Nasty Nasty, composed of ZE:A's Kevin along with�Nine Muses' Kyung Li and Sojin, is gaining attention lately for their sexy debut "Knock" and their scandalous choreography. Kevin revealed to�Newsen that�despite his confident performances he actually feels a bit embarrassed by what his fans have come to term his "naughty hands" dance.

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Kevin shared, "While we perform the prepared choreography properly in the music video and on stage, because the broadcasted version focuses so much on where we touch, I've become more careful." He added that although initially he was immersed in his role, he is now slowly becoming more self-conscious, saying, "Originally,�I was confident in my role as someone with 'naughty hands', but [lately] I've become more shy and reduced the amount of touching."