Kamichu
The most innocent and enjoyable of all the Asian animation that I have seen is a series called Kamichu. It was almost like having children, if a person who has no children can have any idea what it's like to have children. It was so good that as it approached the end there was a deep sense of loss that there would be no way to watch it again for the first time. The best of entertainment, for children and the young at heart alike.