South Korean actress Kim Mi-sun, better known for her stage name as Song Ha-yoon, is famous for starring in such popular televison dramas as Sweden Laundry, Chil-woo the Mighty and Sweden Laundry. She debuted in 2003 and currently works under the management of JYP Entertainment.
Song Ha-yoon made her debut by starring in the 2003 televison dramas Sang Doo! Let's Go to School. At the beginning, she used Kim Byul as her stage name but changed into Song Ha-yoon in 2012.
Little was known about her personal life.