Goo Hara, also known mononymously as Hara, was a South Korean singer and actress. She was a member of the girl group Kara, and had also appeared in television dramas including City Hunter (2011). She made her debut as a soloist in July 2015 with the release of her EP Alohara . After Kara disbanded in 2016, she continued her solo career at another agency, KeyEast. Her solo career was interrupted in 2018 after she became embroiled in a legal case with her ex-boyfriend, Choi Jong-Bum, which was initiated when he assaulted Goo and threatened to release their sex video to harm her career. In June 2019, she continued her solo activities in Japan where she was well received by fans. Her last release was a maxi single "Midnight Queen", released on September 19, 2019.

Invincible Youth is a South Korean variety show which aired its first season on KBS2 from October 23, 2009 to December 24, 2010. Season 1 featured seven girls from K-pop idol groups wherein they experience how it is to live and survive in the Korean rural outdoors. It started its second season on November 12, 2011 featuring eight girls.