In 2006, he was involved in the production of the Juche-based movie The Schoolgirl's Diary, which depicted the life of a young girl whose parents are scientists, with a KCNA news report stating that Kim "improved its script and guided its production".
Han var i 2006 involveret i produktionen af den juche-baserede film En studines dagbog, der handler om livet for en pige, hvis forældre er forskere – og det koreanske pressebureau fortalte, at Kim "forbedrede manuskriptet og ledede produktionen."