In an especially tearful episode, Senbei fixes the anti-gravity device on the Tsuns family's rocket, and they leave Penguin Village forever...or at least, for a few pages. And in a slightly less tearful episode, Senbei fixes the anti-gravity device (again!), this time so that King Nikochan can return home--with some unwanted stowaways: Arale and the Gatchans!
— Description from Comic Vine community (comicvine.gamespot.com).
