My Sassy Girl (엽기적인 그녀; literally, That Bizarre Girl) is a 2001 South Korean romantic comedy film in which the lead protagonist’s chance meeting with a drunk girl on the train changes his life. It is based on the true story told in a series of love letters written by Kim Ho-sik, a man who initially posted them on the Internet and later adapted them into a novel. The film was directed by Kwak Jae-yong.