Kintaro from the Autumn Sky! - Gonna Live Like a Man!

Lum and Ten meet a vicious little boy on top of a flying bear, whom Ataru and Shinobu identify as Kintarō, who came from the sky and is lost. Kintarō's nanny, with Ataru's help, takes the alien children on a tour of Earth and end up in a preschool where the actual Kintarō learns the myth of the real Kintarō and thus hopes to be a role-model to the kids.