Hiyoko

Hiyoko is Peasuke Soramame's much taller girlfriend who is two grades below him.

Appearance
Hiyoko is very tall for her age, has long black hair and wears a dress. Ironically, Peasuke is very short for his age.

Dating Peasuke
Hiyoko was shrunken down really small after being hit by Senbei's Big-Small Ray Gun when Arale tried to make her small for Peasuke. However, she makes her too small. When she is just about to be attacked by a bug, Peasuke saves her with his Peasuke Kick.[1]

She is seen with Peasuke among thePenguin Village residents who run after Arale and Gatchan in the chapter "Penguin Village Dom-Dom-Dom!"

Future
Hiyoko marries Peasuke sometime in the future and they have a son named Poosuke Soramame.[2]

Trivia

 * Her name translates to Chick, being a pun on a bird as well as a slang term for a girl.