The idea of using a character is really effective to persuade people.
Japanese version was narrated by a man's voice, drawn in pretty picture so the kids will understand and study easily. On the other hand, the English version was in mechanical voice and the visual of the atomic boy was creepy. This makes the film scary so the children's will understand how serious it is.
I think the Japanese clip is more effective because if it's too scary, children won't even go near or think about it calmly. The point is to make children understand about the circumstances now, not to scare them away.
