Nobody talks about this one. A thirty-minute Tezuka film where a magical unicorn tries to save a crystalline planet from dying, and it works as both a children's fable and a quiet apocalypse story. The animation moves like watercolor, and by the end you realize it was never really about saving the world, it was about what it costs when you try anyway and no one notices.

Unico, a young unicorn, falls from heaven and travels on the north wind. Along the way he meets Tsubasa, a tree boy who can talk. Humans have stripped the Earth of its resources and wrecked its environment, leaving a world where nothing can survive. The pair set out to find a way to make the planet livable again. After a hard journey they reach the Sphinx and a time fairy, and they resolve to return to the past to steer humanity away from its mistakes. The catch is that they can remain there for only five minutes. Made as the fourth original animated work for the Tezuka Osamu Animation theatre, this fantasy film carries Tezuka's call to save our fragile Earth and marks the theatre's first anniversary.