Kerokero Keroppi no Daibouken
English title: Keroppi in the Big Adventure
Japanese title: けろけろけろっぴの大冒険
Alternative titles: Hello Kitty and Friends: The Big Adventure, Keroppi and Friends: The Big Adventure, Kerokeroppi: The Big Adventure Mystery of the Bellybutton
Type: OVA
Source: Other
Episodes: 1
Status: Finished Airing
Aired: Sep 27, 1989
Duration: 10 min
Rating: G - All Ages
Producers: Sanrio
Genres: Adventure, Fantasy
Demographics: Kids

When Pocapon's belly button gone missing, Keroppi, Den Den, and Ruby go to find it as without it he is unable to play the drums.