Nasty Nasty (Hangul: 네스티네스티; stylized in all caps) was a co-ed project unit under Star Empire Entertainment. The group consisted of ZE:A's Kevin, and former 9MUSES' members Gyeong-ree (경리) and So-jin (소진). They debuted on debuted on September 3, 2014 with the title track 노크 (Knock). Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.