This director debuted with a movie written by Guiyeoni. He also directed Lump Sugar.
 Lee debuted with "He Was Cool" (2004). 
 "That Guy was Cool") is a 2004 South Korean film based on the same-titled 2001 Internet novel written by Guiyeoni. 
Lump Sugar (or Lump of Sugar; Hangul:  ) is a 2006 South Korean film directed by Lee Hwan-kyung and starring actress Im Soo-jung. 
