S01E01 Arale's Birth / Hey! Friends
Senbei creates Arale and takes her on a test-run as a convincing little sister. However, she's not as tuned-up as her creator would have expected. / Arale is enrolled in school, and tries to win...
Arale rescues a bear, but trouble is afoot when her new friend is to be released back into the wild. / Senbei creates a raygun that can make things bigger or smaller than their intended size. Naturally, Arale causes some mischief with it.
Senbei Norimaki, known by his nickname Dr. Slump, a genius yet under-respected inventor and roboticist, creates an android by the name of Arale, and poses her as his little sister. What starts as an experiment in robotics turns into an adventure every day for the residents of Penguin Village, a wacky rural community with several colorful characters interacting with Arale and her creator.