Boyfriend is a six-member South Korean boy group under Starship Entertainment formed in 2011. The group consists of Kim Donghyun, Shim Hyunseong, Lee Jeongmin, twins Jo Youngmin, Jo Kwangmin and No Minwoo. The group has released three Korean singles, a mini album and soon to release a first studio album, together with a Japanese single. They debuted on Mnet's M!Countdown on May 26, 2011 with their debut single "Boyfriend". Their fanbase was officially named "Best Friend" as of August 10, 2011.