Akane's 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 Kappei's muscling his way into her life, becomes Kappei's sworn enemy, but also his best friend. He often appears in brief entr'actes to explain the rules of whatever sport Kappei happens to be playing at that time. 

Kappei is a dramatically short guy but he is a master in every sport. He lives as a guest in sweet Akane's house, and he's in love with her, but there's a strange rival, her dog Salomone (Italian name) who plans evil traps to encumber Kappei. But the dog has also another function: he explains all sport rules when a new sport is depicted. Kappei is fond of white female underwear, always trying to lift girl's skirts up.
<br><br>
(Source: Anime News Network)

Seiichiro