Kim, Seong-Eun has been working as a children's book writer and planner for a long time. She planned books such as 『Follow the Map』; 『Nooks and Crannies of Korea』; 『A Train Journery in Korea』; and 『Follow the Stream of the Han Rive』r. Kim is also the author of the follwoing books: 『We Are All Neighbors』; 『Our Land and Our Song』; 『The Earth Village』; 『Ms. Sympathy is Strong!』; 『Ms. Communication Solves Problems Well』!; 『Ms. Respect is Heartwarming』.