Seiichiro

Akanes dog who can walk and speak like a human being although only Kappei can understand his speech. He is also enamored of Akane and dreams of marrying her despite the fact that she is human and he a dog and resenting Kappeis muscling his way into her life becomes Kappeis sworn enemy but also his best friend. He often appears in brief entractes to explain the rules of whatever sport Kappei happens to be playing at that time.