Puppy Poo (written by Kwon Jeong-saeng and illustrated by Jeong Seung-gak) was a story about how nothing in this world is useless. The story touched many with its pondering of the meaning of life, asking the question, "Where am I needed in this world?" and the book flew off the shelves (last year the book became the first original children's book by a Korean author in 15 years to sell a million copies).--List: books from Korea.