Sun-mi released a new album on Tuesday, making her first solo outing since the disbandment of Wonder Girls.
She debuted in 2007 with the girl band and left it in 2010 to prepare for a college entrance exam. She returned to showbiz as a solo singer in 2013 and rejoined the group in 2015.
But Wonder Girls decided to go separate ways after their last single album in February and Sun-mi moved to a new management agency in March.
"It is a challenge as well as a fresh start. I want to present various kinds of music throughout my albums," Sun-mi said. "My ultimate goal is to be a credible singer worth listening to whether it is my performance or music itself."