Alvin Friends

Spunky of nature Colleen is a girl who can take care of herself. She and and her best friend Ikuko are dragged along by Hiroto Nakadai on adventures in alternate dimensions.

Hiroto Nakadai's pet.

Prince from an alternate dimension that is running from Lord Kumagai, his uncle who wants to be king, by using objects called the Absprung and Himmelskarte.

The sweet girl-next-door type who has a crush on Hiroto. She and and her best friend Colleen are dragged along by Hiroto Nakadai on adventures in alternate dimensions while running from Hiroto's uncle who is trying to kill them.