Boyfriend is a six-member South Korean boy group under Starship Entertainment formed in 2011. They are the first boy band to have twin members. The group consists of Kim Donghyun, Shim Hyunseong, Lee Jeongmin, Jo Youngmin, Jo Kwangmin, and No Minwoo. They debuted on Mnet's M!Countdown on May 26, 2011 with "Boyfriend". They have released three Korean and four Japanese singles, as well as a full-length album and four mini albums.