Pokémon:Why do the Kids Want Them All?

Each Pokémon character is possessed by a large spirit who takes control of each child. The youngsters are given the power of negative spiritual fighting when they ask their Pokémon to fight for them. In this way, the children gain more and more respect from their friends.

The secret is that no child is allowed to talk about the large spirit that controls them through the Pokémon characters, or they'll be punished.