Herb

Herb (Korean: 허브) is a 2007 South Korean drama film, directed by Heo In-moo. Kang Hye-jung stars in the lead role as a 20-year-old woman with the mental and emotional skills of a seven-year-old, who falls in love with a policeman she sees as her Prince Charming, but must face tragedy when she is forced to deal with certain realities about herself and those around her.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.