Kero Kero Keroppi no Kero Kero House no Himitsu
English name: Keroppi in the Frog's Secret House
Genres: Fantasy
Type: OVA, Episodes: 1
Aired: Nov 21, 1993
Source: Unknown
Rating: G - All Ages
Synopsis:
On a rainy day Keroppi and friends find their elders' old secret club house. But the house ends up being more magical than they thought.