This is the one that got itself fired. Pitched into a special animation competition for a power company's PR project, it opens on an exhausted Earth, and then the boy finds a girl robot who stores sunlight and converts it to energy, meaning she needs no generating plant at all. Read that back and you understand instantly why the client passed: the client burns the planet's resources for a living, and this short quietly says the future doesn't need them. A 1987 one-shot mecha piece with the courage to bite the hand holding the check, and it paid for that courage with obscurity. That's why the people who've actually seen it keep calling it slept on. Nothing hits quite like a commercial that refuses to sell the product.

On an Earth drained of its resources, the main character comes across a robot girl who can soak up sunlight, hold onto it and turn it into energy. Osamu Tezuka handled nearly every part of this one-episode 1987 special himself, writing the story and script, animating it and providing the narration. He made it as an entry in an animation contest tied to a power company's publicity campaign, and it was turned down, which is little surprise given a heroine who has no need for a power company at all. The result is a short mecha and science fiction piece with a pointed view on energy and the planet's resources.