Which 2008 South Korean film based on the internet novel of the same name was written by Guiyeoni?
Guiyeoni: Guiyeoni (born 1985) is the pen name of internet novelist Lee Yoon-sae. Guiyeoni:  Since then, one of her other books, "Do Re Mi Fa So La Ti Do", has become a film starring Jang Keun-suk.
i don't know