Kwak Jae-yong is a South Korean film director and screenwriter. He studied physics at Kyung Hee University. He achieved success with his debut film Watercolor Painting in a Rainy Day in 1989, but the failure of his next two movies led to eight years of unemployment before a comeback with the smash-hit film My Sassy Girl in 2001. He is known for his fondness of love stories set in a mix of different genres.