I have read it too-wonderful book!
Have you ever read the classic book "Lord of the Flies?" If you liked that book (and books about North Korean defectors), you need to read "Every Falling Star" by Sungju Lee. This book is about a pre-teenaged boy who was abandoned by his parents during the late 1990's North Korean famine (as if the famine has ever ended; I doubt it has) and how he resorted to forming a street gang to survive.