I think the video was easy for children to understand that disaster had happended in Fukushima. However, it was kind of too simple. For example, I wanted more specific and technical information about what genpatsu is and why it is so dangerous for humans. That way, I think children who live far away from Fukushima would be able to recognize the reality and the hardships of Fukushima people.
I think it was appropriate to use "poop" as radio active materials for Japanese children because it is one of the easiest and most clear way to compare unwanted things. I also liked how the ending was encouraging and reminding us to thank the "doctors" who are working hard in the hazardous areas.
The English version was more realisticly animated than the Japanese version. The Japanese version was more like a non human character. The two videos were clear and easy to understand the issue in Japan. Non Japanese people may have felt a little bit uncomfortable or awkward about the cartoon "poop".