Green Days: Dinosaur and I (Korean: 소중한 날의 꿈; RR: Sojoonghan Nalui Ggoom; lit. "Dream of a Precious Day") is a 2011 South Korean animated film. Without the high-tech computer graphics and three-dimensional techniques that dominate the animation industry, the film was hand-drawn in pencil, with 14 animators using 100,000-plus sheets over a period of 11 years. It premiered at the 15th Busan International Film Festival in 2010 and competed for the top prize at the 2011 Annecy International Animated Film Festival.Set in a 1970s rural town, Green Days: Dinosaur and I is a nostalgic coming-of-age story about a high school girl who struggles to find meaning in her existence and learns to confront her biggest fears, while also falling in love for the first time. Yi-rang (voiced by Park Shin-hye) has all but given up on her athletic aspirations, when she meets Cheol-soo (Song Chang-eui), who dreams of becoming an astronaut, and Soo-min (Oh Yeon-seo), a transfer student from Seoul. The film follows the adolescents' budding romance, growing pains, hopes and dreams.