Na Haeun is a trainee under SM Entertainment. She first gained notoriety in 2011, when she was four years old, when she appeared on Star King and performed a dance cover.
She continued to perform dance covers on her Youtube channel and gained attention again in 2017 performing at the MMA awards.
She made her debut on January 26, 2018 with "So Special".
In April 2022, it was announced that Haeun had joined SM Entertainment.