She has written children's books Jongibap (종이밥 Paper Meal), Nae dongsaeng ayeongi (내 동생 아영이 My Little Sister Ayeong), Ttongbada-e gega sanda (똥바다에 게가 산다 A Crab Lives in a Sea of Poop), and young adult novels Modu kkameon (모두 깜언 Everyone Come On), Jokeowa na (조커와 나 The Joker and I), as well as picture books Yukbeongileul jikyeora ttukttak (6번길을 지켜라 뚝딱 Let's Protect Road Number 6), and Moyeora!
She has also written Dasi gileul tteonada (다시 길을 떠나다 Once Again On the Road), which portrays the life of Mun Jeong-hyeon.
In 1987 during her 20s, she established herself in a poor neighbourhood of Manseok-dong, Dong District, Incheon with the opening of Gichatgilyeop gongbubang (기찻길옆 공부방 The Study Room by the Railroads).
[5] After Gwaengiburimal a-ideul, Kim has continued to write about the lives of people neglected and cast out to the dark corners of society, with a realistic, yet compassionate view.
Modu kkameon (모두 깜언 Everyone Come On) portrays the reality of the countryside, which has been long neglected by South Korean society.
Also, in "Bulpyeonhan Jinsil" (불편한 진실 The Uncomfortable Truth) and "Naegedo nalgaega itseotda" (내게도 날개가 있었다 I Had Wings Too Once), the author looks into the issue of school violence.