Park Seo-lyeon was born in Cheorwon, Gangwon Province. In 2007, she won the Daesan Prize for Young Adult Literature with her short story Exit (written in high school). In the same year, she won the Munhakdongne Prize for teenage literature with a collection of poems. In 2015, she won the Silcheon short story competition (quarterly magazine of “engaged literature”) with Mickey Mouse Club.
Her first novel L’ouvrière sur le toit (2018) is set in the 1930s. It is based on the story of Kang Juryong, a female worker who protested against the Japanese occupation by climbing onto a roof. It won her the prestigious Hangyeorye Award.